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Animal tissue
Descripción
Tissue level structural organisation in animals
Sin etiquetas
biology
biology
cbse central board of secondary education
Mapa Mental por
Sunflower Seeds
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Resumen del Recurso
Animal tissue
Epithelial tissue
Simple
Squamous
1.single layer
2.compactly arranged
3. flat
4. prominent nuclei
'pavement/tesselated epithelium'
eg. inner lining of blood (endothelium) vessels, lining of alveoli, Bowman's capsule, lining of coelom (mesothelium),
directly over basement membrane/ avascular/ blood from basement membrane
Cuboidal
1. single layer cube shaped cells
2. usually present in glands
Brushbordered (Microvilli)
eg. PCT (proximal convulated tubules)
Ciliated cuboidal
eg. Parts of nephron (collecting ducts)
Germinal epithelium (eg of cuboidal in testis and ovary (makes sperm and ovum))
simple cuboidal
eg. Thyroid follicles, sweat glands, Pancreas acini, Iris, Choroid
Columnar
1. single layer of column like cells
2. nucleus situated on basal side
Simple columnar
eg Bile duct, Liver
Brushbordered columnar
eg. small intestine
Ciliated columnar
eg. Fallopian tubes, Ependymal epithelium (ventricles of brain)
Stereociliated columnar
eg. Epididymis, Vas deferens, Internal ear
Pseudostratified
False appearance of layers
2 types of cells (long cells, short cells)
nucleus lies at different height but both are connected to basement membrane
eg. PSCGE (psc glandular epithelium), Trachea, Bronchi, nasal chamber(respiratory epi)
Glandular Epithelium
Unicellular
isolated glandular cells
eg. Goblet cells of ailmentry canal
Multicellular
Simple
single unbranched duct
tubes (tubules)
sacs (acini, alveoli)
Compound
Branched system of ducts
pancreas, salivary gland
Exocrine
2 parts (secretory and duct)
ducts transport secretion to site of action
eg. salivary gland, tear gland, gastric gland, intestinal gland, mammary glands, sebaceous glands, earwax
Endocrine
lack ducts, (ductless glands)
secretions directly poured in tissue fluid (hormones)
eg. Insulin, Glucagon, adrenaline
Compound
Stratified
Transitional
Connective tissue
Muscle tissue
Neural tissue
Recursos multimedia adjuntos
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4c2bc0d0 6ff1 45f5 92a9 8e015bf7ee9c (binary/octet-stream)
4eaeee8c 35c8 41dc 84c0 C2869596819d (binary/octet-stream)
Ed526ac4 833f 4302 A164 420d509995e0 (binary/octet-stream)
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