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Flashcards in Test Three Deck (240)
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1

purpose of postsynaptic neuron

carries out action, direct link to effector

2

receptors are capable of sensing what

touch, pain, temp and chemical stimuli

3

what causes the depolarization of postsynaptic membrane

neurotransmitter

4

where is the vestibular apparatus located

in the inner ear

5

what is negative contraction

tension going opposite direction of where muscle is going

6

efferent division is made up of

somatic and autonomic motor

7

when is max velocity greatest

at lowest force

8

what is irritability is neurons

ability to respond to stimulus and convert it to a neural impulse, respond to action

9

slow twitch and action potential

slow for myosin to attach to actin, slow from when signal arrive to force is longer

10

function of endomysium

surrounds individual muscle fibers

11

what are cross bridges

myosin attaching to actin

12

what is extensor

increase joint angles

13

what are free nerve endings

sensitive to touch and pressure, initially strongly stimulated then becomes adapted

14

after stimulation in parasympathetic division what happens to ACh

degraded by acetylcholinesterase

15

function of external lamina

just below endomysium

16

force generation in muscle depends on

types and number of motor units recruited, initial muscle length, and nature of the neural stimulation of motor units

17

how does the potential membrane resets

with the sodium potassium pump

18

what maintains resting membrane potential

sodium potassium pump

19

anatomy of transverse tubules

extend from sarcolemma to sarcoplasmic reticulum

20

if we arent using muscle what is happening with signal

muscle not producing signal for protein synthesis and reduces stimuli

21

what are the fiber types of endurance athletes

high % of slow fibers

22

what is the motor end plate

pocket formed around motor neuron by sarcolemma

23

what does IPSP cause

hyperpolarization

24

the somatic nervous system controls what

skeletal muscle

25

what is conductivity in neurons

transmission of the impulse along the axon

26

what is another way to control of the internal environment besides nervous system

endocrine system

27

what must happen first for the cascade of events for muscle contraction to occur

nerve signal

28

what are the chemical that muscle chemoreceptors are sensitive to

H+, CO2, K+

29

what is oxidative capacity

number of capillaries, mitochondria, and amount of myoglobin/ ability to perform aerobic energy production

30

what does an excitatory postsynaptic potential (EPSP) do

causes depolarization