Tissues Flashcards
high power objective
- greatest amount of magnification when viewing specimen
- to see details of specimen
basement membrane
- underside of tissue is anchored to connective tissue by a thin, non living layer
- part of extra cellular matrix
nerve cells/neurons
- sense changes
- respond by transmitting nerve impulses to other neurons or muscles or glands
neuroglial cells
- support and bind components of nervous tissue
- carry on phagocytosis
- supply nutrients to neurons by connecting to blood vessels
merocrine gland
- a watery, protein rich fluid gets released through the cell membrane by exocytosis
- without losing cytoplasm
- salivary, pancreatic glands and sweat glands of skin
apocrine gland
- lose small portions of their glandular cell bodies during secretion
- cellular product and portions of the free ends of glandular cells pinched off during secretion
- mammary glands, ceruminous glands lining external ear canal
holocrine gland
- entire cells filled with secretory products disintegrate
- release entire cells filled with secretory products
- sebaceous glands of skin
iris diaphragm
regulates amount of light going through specimen
fibroblast
- fixed cell in connective tissue
- large star shaped cells
- produce fibres by secreting proteins into extra cellular matrix of connective tissues
goblet cell
- two single called glands in the lining of digestive
- produces mucous that consists of water and protein mucin
smooth muscle tissue
- don’t have striations
- spindle shaped
- single central nucleus
- walls of hollow internal organs ex) stomach, intestine, blood vessels
- involuntary
skeletal muscle tissue
- found in muscles that attach to bones
- voluntary
- long threadlike cells have cross markings called striations
cardiac muscle tissue
- only in heart
- striated and branded
- complex network
- single nucleus
- involuntary
tissue types
- epithelial
- connective
- muscle
- nervous
epithelial tissues shapes
squamous
-flat irregular shaped
cuboidal
-cubed shaped cells
columnar
-rectangular shaped cells
pseudostratified columnar
-false appearance of layers
squamous stratified
-layers of cells
collagen
- thick threads of protein
- flexible only slightly elastic
- tensile strength
- hold structures together
elastin
- protein
- thin fibres branch
- stretch easily can resume original lengths and strength
loose connective tissue
binds skin to the underlying organs and fills spaces between muscles
adipose tissue
cushions joints and some organs
dense connective tissue
binds muscle to bone and bone to bone
blood supply to tissue
blood supply to dense connective tissue is low making tissue repair
epithelial tissues general
- simple squamous ep
- simple cuboidal ep
- simple columnar ep
- pseudostratified columnar ep
- stratified s/c/c
- transitional ep
- glandular ep
