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Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoPlease check the comment section for my commentary to the article from Research Gate
Integumentary SystemDownload Citation | Integumentary System | The integumentary system consists of the skin, hair, mammary glands, adnexal glands, and toenails. Hair… -
Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoPlease check the comment section for my commentary to the article from Science Direct
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Radiation therapy is an integral part of cancer treatment and is frequently combined with other treatments like chemotherapy or tumor removal surgery. Its primary goals…
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In research entitled” Relative Radiation Sensitivity of the Integumentary System: Dose-Response of the Epidermal, Microvascular, and Dermal Populations,” it encompasses…
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The goal is to measure or define tissue population changes in irradiated skin so that the data can help radiation therapists choose therapy schedules that preserve skin…
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Ysandra Prille A. Tabilon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoDIGESTIVE SYSTEMDescription: The digestive system is a long, twisting tube made up of the gastrointestinal (GI) tract, liver, pancreas, and gallbladder that helps the…
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Four layers of the GI tract
Description: The GI tract contains four layers. It includes the mucosa (innermost layer), underneath it is the submucosa, followed by the…
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Wall of the Stomach with rugae
Description: The gastric folds (rugae) are coiled secretions of tissue that exist in the mucosal & submucosal layers of the…
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Tooth
Description: A tooth is a hard, calcified structure used to break down food. They are made up of different layers namely enamel, dentin, pulp cavity, and…
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Ysandra Prille A. Tabilon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoINTEGUMENTARY SYSTEMDescription: The integumentary system is the body’s largest organ that forms a physical barrier between the external and internal environment. It…
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Structure of five layers of the skin
Description: The epidermis is made up of epithelial cells depending on their location in the body. The skin that has four layers is…
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Structure of the nail
Description: The nail is a horny plate that grows on the back of each finger and toe at its outer end. Its structure includes the nail bed, nail…
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Ysandra Prille A. Tabilon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoCIRCULATORY SYSTEMDescription: It is a system of organs that contains the heart and the blood vessels and moves blood throughout the entire body.
Function: This…
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Structure of three layers of the heart
Description: The walls of the heart are composed of 3 layers: Epicardium (outer layer), Myocardium (middle muscular layer), and…
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Four chambers of the heart
Description: Each side of the heart has a small collecting chamber called an “atrium” that connects to a large pumping chamber called the…
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Ysandra Prille A. Tabilon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoNERVOUS TISSUESDescription: It is the main tissue of our nervous system, and it consists of two cells: nerve cells or neurons and glial cells.
Function: It is…
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Structure of a Neuron
Description: Neurons (nerve cells) are the cells considered to be the basis of nervous tissue. It consists of a cell body, dendrites, and axons….
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Five types of Neurons
Description: There are many different types of neurons, and they all have special functions in the brain, spinal cord & muscles that control our…
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Two types of Neuroglia in PNS
– Neuroglia in the PNS includes Schwann cells & satellite cells.
Schwann cell
Description: It is also known as neurilemma cells,…
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Ysandra Prille A. Tabilon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoMUSCLE TISSUESDescription: Muscle tissues are soft tissues that make up the different types of muscles in most animals. It contains special contractile proteins called actin and myosin, which contract and relax to cause movement. The three types of muscle tissue are cardiac, smooth, and skeletal.
Function: Each type of muscle tissue in the…
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Skeletal Muscle Tissue
Description: It has long, cylindrical & multinucleated cells with obvious striations.
Function: Voluntary movement, locomotion, manipulation of…
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Cardiac Muscle Tissue
Description: It has short, branching, striated, generally uninucleated cells that interdigitate at specialized junctions (intercalated discs).
Function: It propels blood into the circulation as it contracts. It also keeps your heart pumping through involuntary movements.
Location: It is found in the walls of the heart.
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Smooth Muscle Tissue
Description: It has short spindle-shaped cells with single, centrally located nuclei. Its cells are arranged closely to form sheets, with no…
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Ysandra Prille A. Tabilon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoCONNECTIVE TISSUESDescription: Connective tissue is the most abundant and widely distributed primary tissue. It has three main components: cells, fibers, and ground substance. It includes loose connective tissue, dense fibrous connective tissue, adipose tissue, elastic connective tissue, cartilage, osseous tissue, and blood.
Function: It binds…
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Collagen Fiber
Description: It is a fibrous protein secreted into the extracellular space. It is also the most abundant protein fiber type and is predominantly made of…
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Elastic Fiber
Description: It is made from the protein elastin. This fiber is also long and thin and forms branching networks in the extracellular matrix.
Function: It…
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Reticular Fiber
Description: It consists of collagen type III and is short, thin, and delicate collagenous fibers that form mesh-like networks in organs.
Function: It acts as a supporting mesh in soft tissues
Location: It is found in kidneys, liver, spleen, kidney, lymph nodes, Peyer’s patches, and bone marrow.
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Loose (Areolar) Connective Tissue
Description: It is the most widely distributed type of connective tissue and serves as a universal packing material between other…
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Dense Regular Connective Tissue
Description: This tissue consist of closely packaged bundles of collagen fibers aligned parallel to each other. These fibers are also…
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Dense Irregular Connective Tissue
Description: It has collagen fibers randomly interwoven, forming a three-dimensional network resistant to distension in all…
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Adipose Tissue
Description: It is an energy-storing loose connective tissue. It consists of adipocytes, cells filled with lipids (fats) composed of roughly 80% fat….
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Bone
Description: Bone, or osseous tissue, is a mineralized and viscous-elastic connective tissue with a large amount of two different matrix materials.
Function: It…
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Blood
Description: It is a specialized connective tissue within the circulatory system. It is a vital liquid that usually conveys blood cells, nutrients, and oxygen…
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Mucous Connective Tissue
Description: It is a primitive (embryonic) and gelatinous type of connective tissue that persist in the umbilical cord. It is also composed of…
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Ysandra Prille A. Tabilon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoEPITHELIAL TISSUESDescription: The epithelium is a type of body tissue covering all internal and external body surfaces, lines body cavities, and hollow organs. It is also the primary tissue found in glands. It is composed of cells laid together in sheets with cells tightly connected. It consists of four types of tissue: epithelial, connective,…
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Simple Squamous Epithelium
Description: Simple squamous epithelium cells are flat in shape and arranged in a single layer. This type of epithelium forms thin, delicate…
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Simple Cuboidal Epithelium
Description: Simple cuboidal epithelium consists of single-layer cells that are as tall as they are wide (resembles a box-like cube). This…
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Simple Columnar Epithelium
Description: Simple columnar epithelium is a single row of tall, closely packed cells aligned in a row. This epithelium often includes apical…
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Stratified Squamous Epithelium
Description: It consists of flattened epithelial cells arranged in many layers. This type is further divided into keratinized and…
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Stratified Cuboidal Epithelium
Description: It is a rare type of Epithelium composed of cells that are as tall as they are wide and are arranged in many layers.
Function: It acts as a protective tissue layer.
Location: It lines the excretory ducts of sweat glands, salivary glands & mammary glands.
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Stratified Columnar Epithelium
Description: It is composed of column-shaped cells arranged in many layers. It is less common than the other stratified types.
Function:…
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Pseudostratified Columnar Epithelium
Description: It is a tissue composed of a single layer of simple columnar epithelial cells whose nuclei appear at different…
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Transitional Epithelium
Description: It is a stratified epithelium, also called urothelium, found in organs that can distend. When the tissue is not stretched, it…
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Mary Abbygale Cabahug posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoThe digestive system breaks down food into nutrients such as carbohydrates, fats and proteins. They can then be absorbed into the bloodstream so the body can use them for energy, growth and repair. -
Mary Abbygale Cabahug posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoThe integumentary system includes the epidermis, dermis, hypodermis, associated glands, hair, and nails. In addition to its barrier function, this system performs many… -
Mary Abbygale Cabahug posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoThe circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back… -
Mary Abbygale Cabahug posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoNervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction,… -
Mary Abbygale Cabahug posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoConnective tissues supports, protects, and gives structure to other tissues and organs in the body. Connective tissue also stores fat, helps move nutrients and other substances between tissues and organs, and helps repair damaged tissue. -
Mary Abbygale Cabahug posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoEpithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory… -
Daphne Sumodlayon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoThe digestive system includes the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus. It also includes the salivary glands,…-
4 layers of the GI tract
Mucosa – a mucous membrane composed of a layer of epithelium in direct contact with GI tract contents, lamina propria, and muscularis m…
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Wall of the stomach with rugaeRugae is the lining of the stomach at rest which forms into thick, velvety folds. These contain microscopic invaginations called gastric pits, that each open into gastric glands. It allows for expansion of the stomach after the consumption of food and liquid.
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Tooth
A tooth is composed of four dental tissues. Three of them – enamel, dentine, and cementum – are hard tissues. The 4th tissue is called the pulp, which contains nerves, blood vessels, and connective tissue. Besides being essential for chewing, the teeth play an important role in speech. A normal adult has 32 teeth.
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Daphne Sumodlayon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoThe integumentary system is the set of organs forming the outermost layer of the human body. It comprises the skin and its appendages, acting as a physical barrier…-
Structure of the 5 layers of the skin
Stratum corneum – outermost layer composed of 20-30 layers of dead, flattened cells; anucleate, keratin-filled keratinocytes w…
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Structure of the nail
Root – appears as a white crescent (lunula); embedded in the skin and adheres to an epithelial nail bed; produces most of the volume of the n…
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Daphne Sumodlayon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoThe circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back…-
Structure of 3 layers of the heart
Epicardium – thin, transparent, outer layer of the heart wall (visceral pericardium) which is composed of mesothelium and d…
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4 chambers of the heart
Right atrium – is about 2-3 mm thick and forms the right border of the heart which receives blood from the epicardium, superior and inferior v…
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Daphne Sumodlayon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoNervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction,…-
Structure of a neuron:
Cell body – contains numerous organelles and a cell nucleus that produces RNA for protein synthesis. It also produces proteins that are c…
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Five types of neurons:– Unipolar (pseudo unipolar) – single, short processes
– Multipolar – three or more processes
– Pyramidal – neurons with a pyramidal shaped cell body and two
distinct dendritic trees
– Bipolar – two processes
– Purkinje – have multiple dendrites that fan out from the cell body
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Two types of neuroglia in PNS:Satellite cells – flattened cells with prominent nuclei that surrounds nerve cells of ganglia. They insulate and support neurons of ganglia
Schwann cells – flattened cells with a flattened nucleus that form myelin sheath in the peripheral NS
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Daphne Sumodlayon posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoMuscle tissue is composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts. The tissue is highly cellular and is well supplied with blood vessels.-
SKELETAL MUSCLE TISSUE
Description: long, cylindrical, multinucleated cells; obvious striations
Location: skeletal muscles attached to bones or occasionally to the skin
Function: voluntary movement, locomotion, manipulation of the environment, facial expression
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CARDIAC MUSCLE TISSUE
Description: branching, striated, generally uninucleate cells that interdigitate at specialized junctions (intercalated discs)
Location: walls of the heart
Function: as it contracts, it propels blood into the circulation; involuntary control
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SMOOTH MUSCLE TISSUE
Description: spindle-shaped cells with central nuclei; cells arranged closely to form sheets; no striations
Location: mostly in the walls of hollow organs
Function: propels substances or objects along internal passageways; involuntary control
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