the pigment in your skin that helps protect from the sun
300
define medial and distal
- towards the midline
-further from the origin
300
what are neuromuscular junctions
where motor neurons and muscle fibers meet
300
where do first degree, second degree, and third degree burns occur
1-epidermis
2-epidermis and dermis
3-subsomething
400
Name one type of flat, long, irregular, and short bone
thigh leg arm forearm
wrist ankle
vertabrae
sternum
400
name 2 functions of skin
protects from sun, regulates body temperature, nails, hair
400
start at your patella. Move about 4 feet superiorly. move medially 6 inches. What structure is deep of the skin
sternum
400
list the steps of a muscle contraction
1) signal from brain to muscle fiber
2)calcium binds troponin which moves tropomyosin aside
3)myosin binds with actin releasing energy from ATP
4)this burst of energy causes actin strands to pull together
400
what is simple versus stratified
simple- 1 layer of cells & named by shape of cells
stratified- more than one layer & named by shape of apical cells
500
define spongy and compact bone
idk
500
Label five parts of the dermis
sebaceous gland, erector pill muscle, pili muscle, hair root, hair follicle, eccrine sweat gland, region of cell division, dermal blood vessels
500
start at your foot phalange. move 3 feet superiorly. move 6 inches medially. move posteriorly. what is this structure?
vertebral column
500
what is the muscle hiearchy
muscle, fascicles, muscle fibers, myofibrils, thick and thin filaments