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Human Anatomy

Histology the study of tissues

QuestionAnswer
What are the four major tissues? Epithelial Connective Muscle Nervous
Epithelial tissue General characteristics? cover organs and body Line body cavities line hollow organs AVASCULAR Basement membrane: Between epithelial & Connective tissues Free Surface highly mitotic protection, secretion/excretion, absorption Classified by shape and number of layers
Simple means? One layer
Stratified means? Many layers
Squamous means? Squished
Cuboidal means? Squared
Columnar means? Colum
Pseudostratified means? Fake
Single Layer of flat cells Substances pass through easily line air sacs, blood vessels, lining of heart? Simple Squamous
Single layer, cubed shaped cells secretes and absorbs line kidney, tubules, small glands? Simple Cuboidal
Single Layer of elongated cells Sometimes possess cilia or microvilli Often have GOBLET cells (produce mucus) lines uterus, stomach, intestines? Simple Columnar
Single Layer Nuclei at two of more levels Often have cilia Often have goblet cells line respiratory passageways ? Pseudostratified Columnar
Many cell layers Top cells are flat Keratinized (dry area) Outer layer of skin Non-keratinized (moist areas) Oral cavity, vagina, anus? Stratified squamous
ONLY found in urinary system Lines interior of kidney, URETERS, urinary BLADDER, & urethra ability to stretch? Transitional
Intercellular Junction linked by 3? Tight junctions Anchoring Gap junctions
Composed of cells that are specialized to produce and secrete substances? Glandular Epithelium
glands are ductless, product internal? Endocrine
Gland have ducts; products external? Exocrine
The pancreas is both? endocrine and exocrine
Exocrine gland composed of one cell goblet cell? Unicellular
Exocrine glands Composed of MANY cells Sweat glands and salivary glands simple and compound? Multicellular
Connective tissue functions? (6) Bind structure framework, support, protection Fill spaces, store fat produce blood cells protect against infections help repair tissue damage
Characteristics of connective tissue? Matrix Varying degrees of VASCULARITY
3 Major cell types of connective tissue? Fibroblast Mast cells Macrophages
Fixed cell Most common cell Large star-shaped produce FIBER? Fibroblast
Wandering cell PHAGOCYTIC Important in injury or infection? Macrophages
Fixed cell Release HEPARIN Release HISTAMINE? (allergic reactions) Mast cells
Mainly fibroblasts Fluid to gel-like matrix Both collagenous and elastic fibers? Loose connective tissue
Bind skin to structures Beneath most epithelia Between muscles? Loose connective tissue
Adipocytes Cushions and insulates store fats? Adipose tissue
Beneath skin Behind Eyeballs Around kidney and heart? Adipose tissue
Packed collagenous fibers few fibroblasts Bind body parts together TENDONS, LIGAMENTS, DERMIS? Dense connective tissue
Solid matrix osteocytes in lacunae Support & protect Forms blood cells attachment for muscles Skeleton? Bone (osseous tissue)
Mostly ELASTIC fibers fibroblast attachment between bones walls of large arteries airways, heart? Elastic connective tissue
FLUID matrix called PLASMA red blood cells, white blood cells and paltets transports (Nutrients and oxygen involved in clotting? Blood
Rigid matrix CHONDROCYTES in lacunae poor blood supply has three types? Cartilage
what are the three types are cartilage? Hyaline cartilage Elastic cartilage fibrocartilage
Most abundant ends of bone nose, respiratory, trachea embryonic skeleton Hyaline cartilage
Flexible externa; ear, larynx ? Elastic cartilage
VERY tough and STRONG Shock absorber intervertebral disc pads of knee, pelvic girdle? Fibrocartilage
3 muscle types? Skeletal, smooth, cardiac
Attached to bones Striated Formed by MYOBLAST multinucleated VOLUNTARY? Skeletal muscle
Walls of organ Skin Walls of blood vessels INVOLUNTARY not staiated? Smooth muscle
Heart Wall INVOLUNTARY striated intercalated discs (allows heart to contract)? Cardiac muscle
has Neurons, axons, dendrites function: conduct nerve impulses Location: found in brain, spinal cord, peripheral nerve? Nervous tissue
Carry information AWAY from the cell body? Axons
Carry information TO the cell body? Dendrites
Created by: hw0993422
 

 



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