physiology (not finished)

Question 1

3 types of muscle tissues

Answer 1

skeletal, cardiac, and smooth muscle

Question 2

skeletal muscle

Answer 2

usually attached to bones
striated
somatic nervous control
multinucleated

Question 3

cardiac muscle

Answer 3

wall of heart
autonomic nervous control
uninucleated
striated

Question 4

smooth msucle

Answer 4

walls of most viscera, blood vessels, and skin
not striated
autonomic
uninucleated

Question 5

prime mover

Answer 5

primarily responsible for movement

Question 6

synergists

Answer 6

assist prime mover

Question 7

antagonist

Answer 7

resist prime movers actions and cause movement in opposite direction

Question 8

epimysium

Answer 8

dense regular CT surrounding entire muscle

Question 9

perimysium

Answer 9

fibrous CT surrounding fascicles (groups of muscle fibers)

Question 10

endomysium

Answer 10

fine areolar CT surrounding each muscle fiber

Question 11

components of skeletal muscle fiber

Answer 11

glycosomes, myofibrils, sacroplasmic reticulum, T tubules

Question 12

myofibrils

Answer 12

densely packed, rod like elements with striations
80% of cell volume

Question 13

z disc

Answer 13

proteins that anchor thin filaments

Question 14

m line

Answer 14

proteins that hold thick filaments together

Question 15

thin filmaments

Answer 15

consists of two strands of actin subunits twisted into a helix + two types of regulatory proteins
run length of I band and partway into A band

Question 16

sarcomere

Answer 16

smallest unit of a muscle fiber
composed of thin and thick filament

Question 17

thick filaments

Answer 17

run entire length of A band

Question 18

sarcoplasmic reticulum