Unit 2 cards

cardiac myocytes are joined end to end by junction called

electrical connections at these junctions enable a wave of excitation to tracel rapidly from cell to cell, and mechanical connections keep the myocytes from pulling aprart when the heart contracts

maintain connection to surface with a duct (epthelial tube) example salivary glands

dont have ducts but secrete their products (hormones) directly to the blood stream

produce thin, watery secretion example sweat, milk, tears

produce a glyco protein, that absorbs water to form a sticky secretion

the product is released from the cell by secretory vessicles example sweat or mucus are produced this way

apocrine secretion involves the loss of some of the cytoplasm along with secretoy vessicle. the apical part of the cell becomes filled with secretory vessicle. these vesicles and the cytoplasm in that area are shed at the sametime

replacement of dead or damaged cells with original cells

replacement of damaged cells with scar tissue (callagen)

helps hold organ together, function is not restored

the largest membrane in the body

skin

composed of stratified squamous epithelium called the epidermis resting on layer of connective tissue, the dermis

this is made up of simple squamous epithelium on areolar tissue

covers organs and body walls

produces serous fluid

lines passage way that open to the extereor: digestive, repitory, urinary and reproductive

3 layers of the mucous membrane

membrane is importatn in absorption, secretion and protection

found in joints
made only of connective tissue
span the gap from one bone to the next and secrete slippery synovial fluid to the joint

tissue growth through cell multiplication

change from one type of mature tissue to another

elargement of preexisting cells

growth of a tumor through growth of abnormal tissue

shrinking from loss of cell size/number

pathological death of tissue

programmed cell death

unspecialized tissue of embryo to specialized mature types

heredity defect in elastin fibers

hereditary defect in collagen synthesis

is infuffencen collagen in bone making them brittle

lack of vitamin C neede for synthesis of 2 amino acide used to synthesize collage