exam 2 vocab

Question 1

excitability

Answer 1

muscle cells produce AP

Question 2

contractability

Answer 2

muscle cells can shorten

Question 3

elasticity

Answer 3

muscle cells will return ro their original length after being stretched

Question 4

sarcolemma

Answer 4

cell membrane

Question 5

sarcoplasm

Answer 5

cytoplasm

Question 6

Sarco-

Answer 6

flesh

Question 7

myofibrils

Answer 7

bundles of protein

Question 8

myofilaments

Answer 8

make up myofibrils, overlapping protein strands

Question 9

sarcoplasmic reticulum

Answer 9

surrounds each myofilament

Question 10

terminal cisternae

Answer 10

ends of SR

Question 11

t-tubules

Answer 11

carry AP deep into SR

Question 12

thin filament

Answer 12

actin

Question 13

thick filament

Answer 13

myosin

Question 14

tropomyosin

Answer 14

cover active sites on actin

Question 15

troponin

Answer 15

changes shape

Question 16

motor unit

Answer 16

one motor neuron and all of the individual muscle cells it controls

Question 17

central fatigue

Answer 17

CNS, psychological factors

Question 18

peripheral fatigue

Answer 18

physiological factors

Question 19

isometric

Answer 19

muscle does not change length

Question 20

eccentric

Answer 20

muscle lengthens

Question 21

concentric

Answer 21

muscle shortens

Question 22

agonist muscle

Answer 22

prime mover

Question 23

antagonist muscle

Answer 23

opposes the action

Question 24

body of vertebrae

Answer 24

found on all except C1

Question 25

ribs 1-7

Answer 25

true ribs

Question 26

ribs 8-12

Answer 26

false ribs

Question 27

11 & 12

Answer 27

floating ribs