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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoCardiac Muscle Tissue-
Cardiac muscle tissue forms the muscle surrounding the heart. With the function of the muscle being to cause the mechanical motion of pumping blood throughout the rest of the body, unlike skeletal muscles, the movement is involuntary as to sustain life.
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoSkeletal Muscle Tissue-
Skeletal muscle is one of the three significant muscle tissues in the human body. Each skeletal muscle consists of thousands of muscle fibers wrapped together by connective tissue sheaths. The individual bundles of muscle fibers in a skeletal muscle are known as fasciculi.
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoSmooth Muscle Tissue-
Smooth muscle is present throughout the body, where it serves a variety of functions. It is in the stomach and intestines, where it helps with digestion and nutrient collection. It exists throughout the urinary system, where it functions to help rid the body of toxins and works in electrolyte balance.
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Getaprofessor posted an update 4 years ago
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoTigre at Agila -
Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoHISTOLOGY ART
Microscopic Photos of Digestive System Tissue
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Esophagus – The esophagus is a muscular tube connecting the throat (pharynx) with the stomach. The esophagus is about 8 inches long, and is lined by moist pink tissue…
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Stomach – The stomach is a muscular organ located on the left side of the upper abdomen. The stomach receives food from the esophagus. As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter.
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Small Intestine – The small intestine, or small bowel, is a hollow tube about 20 feet long that runs from the stomach to the beginning of the large intestine. The small intestine breaks down food from the stomach and absorbs much of the nutrients from the food.
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Large intestine – The large intestine includes the colon, rectum and anus. It’s all one, long tube that continues from the small intestine as food nears the end of its journey through your digestive system. The large intestine turns food waste into stool and passes it from the body when you poop.
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Muscularis – The muscularis, or muscularis externa, consists of an inner circular muscular layer and a longitudinal outer muscular layer. The coordinated contractions of these layers is called peristalsis, which propels the food through the GI tract.
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Submucosa – The submucosa is a thick layer of loose connective tissue that surrounds the mucosa. This layer also contains blood vessels, lymphatic vessels, and nerves. Glands may be embedded in this layer
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Liver – The liver is an organ located in the upper right part of the belly (abdomen). It is beneath the diaphragm and on top of the stomach, right kidney, and…
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Pancreas – The pancreas contains glands that release substances to help with digestion and control blood sugar. Type 1 and Type 2 diabetes are common pancreatic…
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Villus – Intestinal villi are a unique structural and functional unit for the luminal sensing, digestion, absorption, secretion, and immune defense in the small…
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Jejunum – The jejunum is one of three sections that make up the small intestine. The small intestine is part of the digestive system and is vital for breaking down and absorbing nutrients. It extends from the pyloric sphincter of the stomach to the ileocecal valve that connects the small intestine to the large intestine.
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoThe skin is the body’s largest organ, and it is made up of two layers: the covering epidermis and the underlying dermis. Dermal fibroblasts are derived from distinct embryonic regions and contain positional identification and patterning information in the skin. Dermal fibroblast progenitors differentiate into numerous cell types that are fated to…[Read more]
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The article discusses the role of dermal fibroblasts in the formation and repair of the skin. Fibroblasts play an important role in normal wound healing by breaking down the fibrin clot, producing new extracellular matrix (ECM) and collagen structures to support the other cells involved in efficient wound healing, and constricting the wound.
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoThe topic of the article is the histology of the skin and hair follicle. The skin is made up of three layers: the outer epidermis, the dermis, and the hypodermis. Nerves, blood arteries, glands, and hair follicles are all part of it. The epidermis is a stratified squamous epithelium that is constantly regenerating. It is made up of keratinocytes…[Read more]
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Hair is made up of dead keratinised cells arranged in columns. A central medulla, or core (not evident in fine hairs), is surrounded by a keratinised cortex, and the outer third layer is highly keratinised and creates the thin hard cuticle on the exterior of the hair.
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agohttps://www.sciencedirect.com/book/9780128105450/skin-tissue-models
This book is all about Skin Tissue Models, and it provides a translational link for biomedical researchers interested in interdisciplinary approaches to skin regeneration. Because the skin is the body’s greatest organ, designed substitutes have important medicinal applications…[Read more]
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Skin models are experimental systems that simulate human skin physiology, function, or illness. In vitro approaches, ex vivo skin cultures, and animal models, particularly mice and fish, are among them.
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The production of physiologically realistic in vitro skin models that include all skin layers, namely the epidermis, dermis, and subcutis, is a significant challenge in…
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Caryl Jole Paligsa changed their profile picture 4 years ago
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoDigestive SystemSee comment section for further information
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Four Layers of the GI tract
Mucosa
Location: The moist, inner lining of some organs and body cavities (such as the nose, mouth, lungs, and stomach). Glands in the… -
Submucosa
Location: The submucosa lies under the mucosa and consists of fibrous connective tissue, separating the mucosa from the next layer, the muscularis externa…. -
Muscularis
Location: The muscularis mucosae is the deepest layer of mucosa, lying next to the submucosa. It consists of an outer longitudinal and inner circular layer of smooth muscle cells.
Function: The muscularis layer is responsible for the peristaltic movements and segmental contractions in and the alimentary canal
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Serosa
Location: The outer lining of organs and body cavities of the abdomen and chest, including the stomach.
Function: Serous membrane (or serosa) is a smooth tissue membrane of mesothelium lining the contents and inner walls of body cavities, which secrete serous fluid to allow lubricated sliding movements between opposing surfaces.
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Wall of the stomach with rugae
Esophagus
Location: The esophagus is located in the center of your chest in an area called the mediastinum. It lies behind your windpipe… -
Fundus
Location: The fundus of the uterus is the top part of the uterus that is across from the cervix (the opening of the uterus). The fundus of the bladder is the… -
Pylorus
Location: It is near the bottom of the stomach, proximal to the pyloric sphincter, which separates the stomach and the duodenum.
Function: The pylorus is a valve… -
Rugae
Location: The rugae are folds in the stomach lining. Surface epithelial cells, specialized mucus cells of the neck, and mucus cells in the glands also secrete mucin, a high molecular weight glycoprotein.
Function: A purpose of the gastric rugae is to allow for expansion of the stomach after the consumption of foods and liquids.
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Doudenum
Location: The duodenum is the first part of the small intestine (5-7 m), followed by the jejunum and ileum (in that order); it is also the widest and shortest…
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoIntegumentary SystemSee comment section for further information
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Structure of five layers of the skin
Stratum Corneum
Location: The stratum corneum is the epidermis’ outermost layer (skin).
Function: Prevents unwanted materials from entering and loss of water from exiting the body.
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Stratum Lucidum
Location: It is found on the palms of the hands and the soles of the feet.
Function: Capability of the skin to stretch, degeneration of skin cells, effects of friction in skin
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Stratum Granulosum
Location: above the stratum spinosum and below the stratum corneum (stratum lucidum on the soles and palms)
Function: Act as a transitional layer where keratinocyte skin cells develop into their final form and die -
Stratum Spinosum
Location: The stratum spinosum (also known as the spinous layer or prickly cell layer) is an epidermal layer that lies between the stratum granulosum and the stratum basale.
Function: Responsible for skin’s strength and flexibility
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Stratum Basale
Location: The basement membrane (basal lamina) separates the dermis from the lowest layer, which is linked to the basement membrane by hemidesmosomes.
Function: Proliferation and attachment of the epidermis to the dermis -
Structure of the nail
Nail Body
Location: Nails
Function: The sensitive tips of fingers and toes are protected by nails. -
Free Edge
Location: Nails
Function: this ensures that all the nail bed is covered and therefore protected. -
Nail root
Location: The root portion of this nail lies below the skin, underneath the nail, and extends several millimeters into the finger.
Function: The root of the nail is also known as the germinal matrix. Its edge appears as a white crescent, known as the lunula
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Nail Folds
Location: The nail fold, the most proximal aspect of the perionychium, is composed of a dorsal roof and a ventral floor. It is found approximately 15 mm… -
Eponychium
Location: In human anatomy, the eponychium is the thickened layer of skin at the base of the fingernails and toenails. It can also be called the medial or… -
Nail bed
Location: The nail bed is the skin underneath the nail plate. It contains blood vessels that supply nutrients to the fingertip.
Function: The nail bed is a… -
Nail matrix
Location: The nail matrix is the area where your fingernails and toenails start to grow. The matrix creates new skin cells, which pushes out the old, dead… -
Lunula
Location: The half-moon shape at the base of your fingernail is known as a lunula. Lunulae cover the bottom of your nail, just above your cuticle. Lunulae are…
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoCirculatory SystemSee comment section for further information
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Structure of three layers of the heart
Epicardium
Location: Outer layer. In the zebrafish heart, the epicardium is a serous, nonmuscular membrane that surrounds the heart and is found close to the compact myocardium.
Function: Prevent excess expansion or movement of the heart
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Myocardium
Location: Middle layer of the heart.
Function: Initiates contraction driving the cardiac cycle -
Endocardium
Location: The endocardium is the innermost layer of the heart
Function: lines the cavities and valves.
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Four chambers of the heart
Right Atrium
Location: The outer walls of the right atrium contribute to the convexity of the right pulmonary surface, the upper right part… -
Right Ventricle
Location: The right ventricle is the most anteriorly positioned chamber of the heart, sitting directly posterior to the sternum.
Function: The right… -
Left Atrium
Location: Viewed from the frontal aspect of the chest, the left atrium is the most posteriorly situated of the cardiac chambers.
Function: The left atrium receives blood full of oxygen from the lungs and then empties the blood into the left ventricle. -
Left Ventricle
Location: The left ventricle is one of four chambers of the heart. It is located in the bottom left portion of the heart below the left atrium, separated…
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoNervous TissueSee comment section for further information
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Structure of a neuron
Description: Cell body or Soma – Produces the proteins that the other parts of the neuron, including the dendrites, axons and synapses, need to f… -
Five types of neurons
Description: Unipolar (pseudounipolar) – Unipolar neurons are the most common type of sensory neuron. In addition to pain and. touch, they also carry information about temperature, taste, proprioception (body position) and visceral organ activity.
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Multipolar – A multipolar neuron is a type of neuron that possesses a single axon and many dendrites (and dendritic branches), allowing for the integration of a great deal of information from other neurons. These processes are projections from the neuron cell body.
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Pyramidal – The pyramidal tracts are part of the UMN system and are a system of efferent nerve fibers that carry signals from the cerebral cortex to either the brainstem or the spinal cord. It divides into two tracts: the corticospinal tract and the corticobulbar tract
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Bipolar – A type of neuron that has two extensions (one axon and one dendrite). Many bipolar cells are specialized sensory neurons for the transmission of sense. As such, they are part of the sensory pathways for smell, sight, taste, hearing, touch, balance and proprioception.
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Purkinje – Purkinje cells are a unique type of neuron-specific to the cerebellar cortex. They are remarkable (and instantly recognizable) for their massive, intricately branched, flat dendritic trees, giving them the ability to integrate large amounts of information and learn by remodeling their dendrites.
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Two types of neuroglia in PNS
Description: Satellite Cells – Satellite glial cells are a type of glia found in the peripheral nervous system, specifically in sensory, sympathetic, and parasympathetic ganglia. They compose the thin cellular sheaths that surround the individual neurons in these ganglia.
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Schwann Cells – Schwann cell, also called neurilemma cell, any of the cells in the peripheral nervous system that produce the myelin sheath around neuronal axons. Schwann cells are named after German physiologist Theodor Schwann, who discovered them in the 19th century.
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoMuscle TissueSee comment section for further information
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Skeletal Muscle Tissue
Location: In skeletal muscles attached to bones or occasionally to skin.
Function: Voluntary Movement, Locomotion, Manipulation of environment, facial expressions, and voluntary control
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Cardiac Muscle Tissue
Location: The walls of the heart.
Function: Cardiac Muscle tissue works to keep your heart pumping and blood circulating around the body.
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Smooth Muscle Tissue
Location: Mostly in the walls of hollow organs (digestive, respiratory, reproductive tracts, blood vessels), Arrector pili, pupil of the eye, and etc.
Function: Propels substances or objects (food stuff, urine, a baby) along internal passageways; involuntary control
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoConnective TissueSee comment section for further information
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Collagen Fibers
Location: Connective tissue such as in cartilage, bones, tendons, ligaments, and skin
Function: Supports body tissue and collagen is a major component… -
Loose (Areolar) Connective Tissue
Location: Widely distributed under epithelia of body, packages organs, surrounds capilliaries.
Function: wraps and cushion organs, phagocytes engulf bacteria, helps in inflammation, holds and conveys tissue fluid -
Dense Regular Connective Tissue
Location: tendons and ligaments
Function: attaches muscles to bones or to muscles, attaches bones to bones, and withstands great tensile strength
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Dense Irregular Connective Tissue
Location: Lower layers of the skin (dermis) and in the protective white layer of the eyeball.
Function: It offers strength to the skin, making it resistant to tearing from various straining forces
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Adipose Tissue
Location: Under skin; around kidneys and eyeballs; within abdomen; in breasts
Function: Provides reserve food fuel; insulates against heat loss; supports and protects organs
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Bone
Location: Bones
Function: Bone supports and protects, provides levers for the muscles to act on; stores calcium and other minerals and fat; marrow inside bones is the site for blood cell formation -
Blood
Location: Blood vessels
Function: Is a bodily fluid that delivers necessary substances, such as nutrients and oxygen, to the cells and transports metabolic waste products away from those same cells.
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Mucous Connective Tissue
Location: Umbilical cord
Function: High turgor to resist compression
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Caryl Jole Paligsa posted an update in the group
MT30-Histology Art AB 4 years agoEpithelial TissueSee comment section for further information
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Simple squamous Epithelium
Location: Kidney glomeruli; air sacs of lungs; lining of heart and blood vessels; lining of ventral body cavity (serosae)
Function: A… -
Simple Cuboidal Epithelium
Location: Kidney tubules; ducts of small glands; ovary surface
Function: Simple cuboidal epithelium consist of a single layer of cells that are approximately as tall as they are wide. This type of epithelium lines collecting ducts and tubes and is involved in absorbing or secreting material into the ducts or tubes.
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Simple Columnar Epithelium
Location: Nonciliated type lines most of the digestive tract (stomach to rectum) and gallbladder
Ciliated variety lines small bronchi and… -
Stratified Squamous Epithelium
Location: Nonkeratinized type forms the moist linings of the esophagus, mouth, and vagina. Keratinized variety forms the epidermis of the… -
Stratified Cuboidal Epithelium
Location: This type of epithelium is not as common and is found in the excretory ducts of your salivary and sweat glands.
Function:… -
Stratified Columnar
Location: It is found in the conjunctiva, pharynx, anus, and male urethra
Function: The excretory system’s stratified columnar epithelium and… -
Pseudostratified Columnar
Location: Nonciliated type in ducts of large glands, parts of male urethra. Ciliated variety lines the trachea, most of the upper respiratory… -
Transitional Epithelium
Location: Lines the ureters, urinary bladder, and part of the urethra
Function: The urinary tract’s transitional epithelium is bordered by a…
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Caryl Jole Paligsa changed their profile picture 4 years ago
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