Lesson 8- Structures of Nervous System/Nervous

Question 1

Most basic structural and functional component of nervous system

Answer 1

neuron

Question 2

Conduct electrical impulses toward cell body

Answer 2

dendrites

Question 3

Transmit electrical signals away from the cell body

Answer 3

axons

Question 4

Insulates axon and keeps electrical current from migrating outside of neuron

Answer 4

myelin

Question 5

Awareness of your body in space

Answer 5

proprioception

Question 6

Receptors located in skin, in and around joints and muscles, and in inner ear

Answer 6

proprioceptors

Question 7

Body relies on this for sensory info related to position of head in space and sudden changes in directional movement of head

Answer 7

vestibular system

Question 8

Small holes

Answer 8

foramina

Question 9

3 types of muscle

Answer 9

1. skeletal
2. smooth
3. cardiac

Question 10

Are skeletal muscles voluntary or involuntary?

Answer 10

voluntary

Question 11

Are smooth muscles voluntary or involuntary?

Answer 11

involuntary

Question 12

Are cardiac muscles voluntary or involuntary?

Answer 12

involuntary

Question 13

Primary mover is known as an

Answer 13

agonist

Question 14

Working against agonist

Answer 14

antagonist

Question 15

Long strap like muscles, run parallel to long axis of muscle, weaker

Answer 15

longitudinal muscle

Question 16

All muscle fibers insert onto one side of muscle, diagonally

Answer 16

unipennate muscle

Question 17

Muscle fibers insert obliquely onto each side of tendon

Answer 17

bipennate muscle

Question 18

Which type of muscle fiber? Slow twitch, large amounts of mitochondria, high amounts of myoglobin, resistant to fatigue, capable of sustaining aerobic metabolism, more efficient

Answer 18

Type I

Question 19

Which type of muscle fiber? Fast twitch, small amounts of mito., limited capacity for aerobic metabolism, fatigue more easily than slow twitch, sustain effort for few seconds, largest and fastest

Answer 19

Type IIx

Question 20

Which type of muscle fiber? Fast, fatigue resistant, used for strength/power activities, 3 mins for highly trained athletes

Answer 20

Type IIa

Question 21

Sheets of connective tissue that hold muscle fibers together

Answer 21

fascaie

Question 22

Fascia that encases entire muscle

Answer 22

epimysium

Question 23

Bundles of muscle fibers grouped together

Answer 23

perymysium

Question 24

Within pery. individual muscle fibers wrapped in fascia

Answer 24

endomysium

Question 25

Protein filaments running parallel and extend lengthwise through cell

Answer 25

myofibrils

Question 26

Dark bands containing myosin

Answer 26

A bands

Question 27

Light bands containing actin

Answer 27

I bands

Question 28

Functional contracting unit of skeletal muscles

Answer 28

sarcomeres