Chapter 4 And 5- Tissue Vocab Flashcards
Microvilli
protrusions that increase the surface area of cells and minimize any increase in volume,[1] and are involved in a wide variety of functions, including absorption, secretion, cellular adhesion, and mechanotransduction.
Epithelial tissue
Covery tissue.
Basement membrane
Thin layer of connective tissue underlying the epithelium.
Simple
Single layer
Stratified
Many layers
Squamous
Flat cells that specialize in filtration and absorption.
Cuboidal
Box like shape
Columnar
Tall shaped cell that specializes in protection.
Gland
One or more cells that secrete a particular product.
Endocrine
Ductless glands that produce hormones. Released into blood and travels to target organs. Excretes amino acids, proteins, glycoproteins, and steroids.
Exocrine
Secrete products onto body surfaces or into cavities. More exo than endo. Products include mucous, sweat, oil, and salivary glands.
Connective tissue
Most abundant tissue and widely distributed among primary tissues.
Adipose tissue
High nutrient storing ability, insulates against heat loss, and supports and protects. Located under skin, around kidneys, behind eyeballs, in the abdomen, and in breasts.
Cartilage
Tough and flexible, withstands tension and compression, lacks nerve fibers, avascular and slow to heal, loses ability to divide with age, up to 80% water.
Osseous tissue/bone
Has more collagen fibers, inorganic salts, blood vessels, and lacunae than cartilage. Vascular, heals faster. Supports, protects, and provides levers for muscles.
Muscle tissue
Well vascularized
Responsible for movement
Contractile in nature
Nervous tissue
Neurons generate and conduct electrical impulses.
Transmit electrical signals from sensory receptors to effectors.
Regulates and controls body functions
Regeneration
Replacement of destroyed tissue with the same kind of tissue
Skeletal muscle
Long, cylindrical, multinucleate, cells with obvious striations.
Initiates and controls voluntary movement.
Attach to bones or skin.
Cardiac muscle
Branching, striated, uninucleate, cells interlocking at intercalated discs.
Involuntary
Propels blood into circulation.
Found in the walls of the heart.
Smooth muscle
Sheets of spindle shaped cells with central nuclei that have no striations.
Involuntary.
Propel substances along passage ways (peristalsis).
Found in hallow organ walls.