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Fiona Jane posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoNeuron or Nerve cells-Fundamental units of the brain and of the nervous system.
Location: Majority of neurons belong in the central nervous system but some reside in…
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Fiona Jane posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoCardiac Muscle Tissue-Is an involuntary striated muscle tissue found only in the heart and is responsible for the ability of the heart to pump blood.
Location:…
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Fiona Jane posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoMucous Connective TissueLocation: Found in the moist, inner lining of some organs and body cavities (nose, mouth, lungs, stomach)
Function: It protects the body from…
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Fiona Jane posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoSimple Columnar Epithelium TissueLocation: Ciliated tissues including the bronchi, uterus, and uterine tubes; smooth(non-ciliated) are in the digestive tract…
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Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoDigestive System
Please check in the comment section for more information 🙂-
Four Layers of the GI tract
Mucosa
Description: The mucosa is thick and reddish in the cranial region and pale in the caudal region. It is folded longitudinally and…
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Submucusa
Description: Large blood veins, lymphatics, and nerves branch into the mucosa and muscularis externa from the submucosa, which is a dense uneven layer of…
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Muscularis
Description: An inner circular muscular layer and a longitudinal exterior muscular layer make up the muscularis, or muscularis externa.
Function:…
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Serosa
Description: The serous membrane (also known as the serosa) is a smooth membrane made up of a thin connective tissue layer and a thin layer of cells that…
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Wall of the stomach with rugae
Description: Rugae are a series of ridges formed by the folding of an organ’s wall. Rugae most frequently refers to the gastric rugae on…
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Tooth
Description: Enamel, dentin, cementum, and pulp tissue make up a tooth. The dental crown is the part of a tooth that is visible to the oral cavity, and the tooth…
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Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoIntegumentary System
Please check in the comment section for more information 🙂-
Structure of five layers of the skin
Skin
Description: The biggest single organ in the body, accounting for 15% to 20% of total body weight and exposing 1.5 to 2 m2…
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Stratum Basale
Description: Deepest, single layer of cuboidal to low columnar cells in contact with basement membrane; mitosis occurs here; melanocytes and Merkel…
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Stratum Spinosum
Description: The stratum spinosum (also known as the spinous layer or prickly cell layer) is an epidermal layer that lies between the stratum…
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Stratum Granulosum
Description: the epidermis layer just beneath the stratum corneum or (on the palms and soles) just beneath the stratum lucidum; contains dying and…
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Stratum Lucidum
Description: the epidermal layer in the skin of the palms and soles just beneath the stratum corneum
Function: Capability of the skin to stretch, degeneration of skin cells, effects of friction in skin
Location: It is found on the palms of the hands and the soles of the feet.
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Stratum Corneum
Description: The stratum corneum is the epidermis’s outermost layer, marking the end of keratinocyte maturation and development.
Function: Prevents unwanted materials from entering and loss of water from exiting the body.
Location: The stratum corneum is the epidermis’ outermost layer (skin).
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Structure of the nail
NAIL
Description: Each distal phalanx has hard keratin plates on the dorsal surface.
Function: The role of a healthy fingernail is to protect…
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Free Edge
Description: The free edge of the nail bed, also known as the nail tip, protrudes beyond the end of the finger.
Function: this ensures that all the nail bed is covered and therefore protected.
Location: Nails
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Nail Groove
Description: The depression between the nail plate’s borders and the skin.
Function: The grooves on the underside of the nail plate span the length of the nail and help secure it to the nail bed.
Location: Nails
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Nail Fold
Description: skin folds that overlap the borders of the nail
Function: It secures the nail and protects it while it develops.
Location: The fold is connected to the cuticle, which is attached to your nail.
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Lunula
Description: the proximal region of the thickened nail matrix, which appears as a white crescent
Function: The lunula has a crucial structural role in…
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Nail Body
Description: the visible attached portion
Function: The sensitive tips of fingers and toes are protected by nails.
Location: Nails
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Cuticle
Description: the thick proximal nail fold
Function: a diffusion barrier that restricts water and nutrient transport across the apoplast and protects the…
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Phalanx
Description: Any of the long bones of the fingers or toes, numbering 14 for each hand or foot
Function: In 50 percent of fingertip injuries, the distal phalanx, which provides bone support for the nail bed, is fractured.
Location: Nails
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Nail Matrix
Description: the thickened proximal part of the nail bed containing germinal cells responsible for nail growth
Function: The nail matrix is the starting…
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Nail Bed
Description: extension of the stratum basale beneath the nail
Function: The nail body is created on the nail bed and protects the tips of our fingers and toes, which are the body’s farthest extremities and face the most mechanical stress.
Location: The skin beneath the nail plate is known as the nail bed.
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Nail Plate
Description:
Function: The nail plate serves as a sharp extension of the phalanx for climbing, scratching, and digging for food while also supporting the…
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Hyponychium
Description: The hyponychium is the skin directly beneath your nail’s free edge.
Function: The hyponychium acts as a barrier against pathogens and debris, preventing them from entering your nail.
Location: It’s near your fingertip, just beyond the distal end of your nail bed.
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Dermis
Description: Connective tissue, blood vessels, oil and sweat glands, nerves, hair follicles, and other structures are all found in the dermis. The papillary…
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Epidermis
Description: Connective tissue, blood vessels, oil and sweat glands, nerves, hair follicles, and other structures are all found in the dermis. The papillary…
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Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoCirculatory System
Please check in the comment section for more information 🙂-
Structure of three layers of the heart
Epicardium
Description: Thin, transparent outer layer of the heart wall. It is also called as Visceral layer of the serous…
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Myocardium
Description: Middle layer. A cardiac muscle tissue and makes up about 95% of the heart. It is striated like skeletal muscle. cardiac muscle is involuntary.
Function: Initiates contraction driving the cardiac cycle
Location: Middle layer of the heart.
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Endocardium
Description: Inner layer. It is a thin layer of endothelium overlying a thin of connective tissue
Function: lines the cavities and valves.
Location: The endocardium is the innermost layer of the heart
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Four chambers of the heart
HeartDescription: A little cone-shaped organ around the size of a fist. It measures approximately 12 cm (5 in.) long, 9 cm (3.5 in.) wide…
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Right Atrium
Description: The right atrium’s muscular walls are significantly thinner than those of the ventricles, and the auricle is a wrinkled flap shaped like a…
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Right Ventricle
Description: The right ventricle is triangular and extends from the right atrium’s tricuspid valve to the heart’s apex. The atrium’s wall is thickest…
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Left Ventricle
Description: The heart’s left ventricle is the thickest chamber. The left ventricle is longer and has thicker walls than the right ventricle, and it has…
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Left Atrium
Description: A unique appendage of the left atrium is a finger-like pouch that extends from the main body of the atrium.
Function: The left atrium…
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Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoNervous Tissue
Please check in the comment section for more information 🙂-
Structure of a neuron
Description: Neurons (also known as neurones or nerve cells) are the brain’s and nervous system’s basic units. The soma (cell body) of the neuron…
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Five types of neurons
Unipolar
Description: It possesses a single process emerging from the cell body. This short process also attaches to the axon, which makes it…
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Bipolar
Description: It is a type of neuron that has two extensions/ two processes (axon and dendrite).
Function: They are constantly sensory, conveying information about vision, olfaction, balance, and hearing. retina.
Location: The retina of the eye, the roof of the nasal cavity, and the inner ear all contain bipolar neurons.
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Multipolar
Description: It is the common type in CNS. It possesses a single axon and many dendrites (3 or more dendrites)
Function: Dendrites allow these neurons to…
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Pyramidal
Description: Neurons with a pyramidal shaped cell body (soma) and two distinct dendritic trees.
Function: to convert synaptic inputs into a structured action potential output
Location: It is found in the cerebral cortex
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Purkinje
Description: Purkinje have multiple dendrites that fan our from the cell body.
Function: Purkinje cells are the cerebellar cortex’s sole output neurons, and they play an important role in movement coordination, regulation, and learning.
Location: It can be found in cerebellar cortex
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Two types of neuroglia in PNS
Satellite Cells
Description: Sensory ganglia satellite glial cells are laminar cells that wrap around sensory neurons. Satellite cells…
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Schwann Cells
Description: The Schwann cell resembles a rolled-up sheet of paper, with myelin layers between each coil.
Function: Myelination of the PNS axons is one of the most critical tasks of the Schwann cell.
Location: It can be found in the peripheral nervous system
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Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoMuscle tissue
Please check in the comment section for more information 🙂-
Skeletal Muscle Tissue
Description: Long, cylindrical, multinucleate cells; obvious striations. Skeletal Muscle Tissue is composed of long cells called muscle fiber…
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Cardiac Muscle Tissue
Description: Cardiac Muscle Tissue is a specialized, organize type of tissue that only exist in the heart. It is involuntary control. Striated.
Function: Cardiac Muscle tissue works to keep your heart pumping and blood circulating around the body.
Location: The walls of the heart.
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Smooth Muscle Tissue
Description: Smooth muscle tissue is known as “involuntary muscle” It consist of narrow spindle-shaped cells with a single, centrally located nuc…
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Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoConnective Tissue
Please check in the comment section for more information 🙂-
Collagen Fibers
Description: Collagen fiber is an elongated fiber made composed of collagen glycoproteins found in the extracellular matrix of connective tissues. It’s…
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Elastic Fibers
Description: Has many elastic fibers
Function: Provide strength, extensibility (ability to stretch), and elasticity (ability to return to its shape after stretching) to skin
Location: Skin, lungs, arteries, veins, connective tissue proper, elastic cartilage, periodontal ligament, fetal tissue.
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Reticular Fibers
Description: Network of reticular fibers in a typical loose ground substance; reticular cells predominate
Function: Fibers form a soft internet skeleton that supports other cell types
Location: Lymphoid organs (lymph nodes, bone marrow, and spleen)
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Loose (Areolar) Connective Tissue
Description: A form of connective tissue made up of strands of protein fibres (collagen and elastin) and cells like fibroblasts, mast…
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Dense Regular Connective Tissue
Description: Dense, regular CT is a white, flexible tissue with closely packed collagen fibre bundles. All of these fibers run in the…
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Dense Irregular Connective Tissue
Description: Irregular connective tissue is a type of connective tissue that has a dense irregular network of collagen and elastic…
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Adipose Tissue
Description: Matrix as in areolar, but very sparse; closely packed adipocytes, have nucleus pushed to the side by large fat droplet
Function: Provides reserve food fuel; insulates against heat loss; supports and protects organs
Location: Under skin; around kidneys and eyeballs; within abdomen; in breasts
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Bone
Description: Hard, calcified matrix containing many collagen fibers; osteocytes lie in lacunae. Very well vascularized.
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
Location: Bones
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Blood
Description: Is the specialized connective tissue within the circulatory system that transports blood cells and dissolved substances throughout the body via…
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Mucous Connective Tissue
Description: Fibroblast-like cells, which can be spindle or stellate shaped, make up mucous connective tissue.
Function: High turgor to resist compression
Location: Umbilical cord
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Kizel Mikaela C. Cardoza posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoEpithelial TissuePlease check in the comment section for more information 🙂
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Simple Squamous Epithelium
Description: Single layer of flattened cells with disc-shaped central nuclei and sparse cytoplasm; the simplest of the epithelia
Function:…
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Simple Cuboidal Epithelium
Description: Single layer of cubelike cells with large, spherical central nuclei
Function: Secretion and absorption
Location: Kidney tubules; ducts of small glands; ovary surface
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Simple Columnar Epithelium
Description: Single layer of tall cells with round to oval nuclei; some cells bear cilia; layer may contain mucus-secreting goblet…
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Stratified Squamous Epithelium
Description: Thick membrane composed of several cell layers; basal cells are cuboidal or columnar; cells at the apical surface are…
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Stratified Cuboidal Epithelium
Description: Stratified cuboidal epithelia is an uncommon kind of epithelial tissue made up of cuboidally shaped cells layered in layers.
Function: Protection
Location: Forms largest ducts of sweat glands, mammary gland, and salivary glands
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Stratified Columnar Epithelium
Description: Stratified columnar epithelium is an uncommon kind of epithelial tissue made up of numerous layers of column-shaped cells.
Function: Protection
Location: Mammary gland ducts, larynx, male urethra
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Pseudostratified Columnar Epithelium
Description: Single layer of cells of differing heights, some not reaching the free surface, but all touching the basement…
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Transitional Epithelium
Description: Basal cells cuboidal or columnar; surface cells dome-shaped or squamous like, depending on how much the organ is stretched
Function: Stretches readily and permits distension of urinary organ by stored urine
Location: Lines the ureters, urinary bladder, and part of the urethra
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Vivien Jean A. Rosario posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoDIGESTIVE SYSTEMLAYERS OF THE GASTROINTESTINAL TRACT
MUCOSA
The mucosa, or inner lining of the GI tract, is a mucous membrane. It is composed of (1) a layer of…
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Vivien Jean A. Rosario posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoINTEGUMENTARY SYSTEMEPIDERMIS
The outermost layer of the skin, which is composed of squamous cells. This layer includes two distinct types: thick skin and thin…
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Vivien Jean A. Rosario posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoCIRCULATORY SYSTEMLAYERS OF THE HEART
Epicardium – the thin, transparent outer layer of the heart wall, is also called the visceral layer of the serous pericardium….
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Vivien Jean A. Rosario posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoNERVOUS TISSUENEURON
Neurons are branching cells; cell processes that may be quiet long extend from the nucleus-containing cell body; also contributing to nervous…
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Vivien Jean A. Rosario posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoMUSCLE TISSUESKELETAL MUSCLE
Long, cylindrical, multinucleate cells; obvious striations
Function:
Voluntary movement; locomotion; manipulation of the environment;… -
Vivien Jean A. Rosario posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoCONNECTIVE TISSUESAREOLAR (loose) CONNECTIVE TISSUE
Gel-like matrix with all three fiber types; cells include fibroblasts, phagocytes, some white blood cells, and…
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Vivien Jean A. Rosario posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoEPITHELIAL TISSUESSIMPLE SQUAMOUS EPITHELIUM
Single layer of flattened cells with disc-shaped central nuclei and sparse cytoplasm; the simplest of the…
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Aymer Adrian W. Arap posted an update in the group
MT30-Histology Art AB 3 years, 11 months agoHistology Art.pdf – Google DriveHistology Art.pdf – Google Drive -
Keyth Abegail T. Rendon posted an update in the group
MT30-Histology Art AB 3 years, 11 months ago-
The digestive system also known as gastrointestinal tract or alimentary canal is responsible in turning food into nutrients. The food obtained becomes the necessary…
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Serosa- The outermost layer of the digestive tract. It is a serous membrane composed of a simple squamous epithelium and areolar connective tissue. It separates the…
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The rugae also known as gastric folds allow the stomach to expand or dilate when the stomach is filled with fluids or food.
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