Week 11

Question 1

What are some under appreciated roles of muscle in terms of health and disease?

Answer 1

Question 2

Does muscle mass play a role in relation to cancer mortality?

Answer 2

yes, therapies that improve muscle mass and function may be effective for improving cancer patient survival

Question 3

Label and explain

Answer 3

Question 4

Differentiate between anatomical and physiological cross sections

Answer 4

Question 5

What can you infer from this?

Answer 5

Question 6

Which are short fibers vs long fibers?

Answer 6

Question 7

Define epimysium, perimysium, endomysium, srcolemma, sarcoplasm, and sarcoplasmic reticulum

Answer 7

Question 8

Explain

Answer 8

Question 9

Explain muscle action types

Answer 9

Question 10

Explain

Answer 10

Question 11

Explain

Answer 11

Question 12

Explain motor units, and excitation-contraction coupling

Answer 12

Question 13

What is the sequence of muscle action?

Answer 13

Question 14

Label

Answer 14

Question 15

Explain coupling, contraction, uncoupling, and recharging phases

Answer 15

Question 16

What characteristics differentiate skeletal muscle fiber types?

Answer 16

Question 17

Explain the properties of type II fibers

Answer 17

Question 18

Explain the properties of type I fibers

Answer 18

Question 19

Explain the contraction time, size of MN, resistance to fatigue, activity they are used for, and max duration of use for type I vs IIa vs IIx fibers

Answer 19

Question 20

Explain force production, mitochondrial density, capillary density, oxidative density, glycolytic density, and major storage fuel for type I vs IIa vs IIx fibers

Answer 20

Question 21

How does muscle fiber type differ in atheletes?

Answer 21

Question 22

Is there a link between muscle fiber type (slow twitch) and max VO2?

Answer 22

yes

Question 23

Is there an evidence of shifting from one muscle fiber type to another?

Answer 23

Question 24

how do nerves supply muscles?

Answer 24

Question 25

Explain motor units and motor pools

Answer 25

Question 26

Explain the anatomical features

Answer 26

Question 27

What are the nerve fiber groups and their speed?

Answer 27

Question 28

What are the 3 primary sources of input for muscle action?

Answer 28

Question 29

What are the 5 common features of NMJ?

Answer 29

Question 30

Explain excitation, facilitation, and inhibition

Answer 30

Question 31

Which is excitatory vs inhibitory?

Answer 31

Question 32

What are the physiologic and mechanical properties of motor units?

Answer 32

Question 33

What is the force production, contraction speed, fatigue resistance, sag, and muscle fiber type in motor units for fibers I vs IIa vs IIx?

Answer 33

Question 34

What are the tension characteristics?

Answer 34

Question 35

What mechanisms alter the force of graded muscle action?

Answer 35

Question 36

Label and explain

Answer 36

Question 37

Explain fatigue resistance

Answer 37

Question 38

What are the muscle, joint, and tendon proprioceptors?

Answer 38

Question 39

Label and explain

Answer 39

Question 40

Explain stretch reflex

Answer 40

Question 41

Explain GTOs

Answer 41

Question 42

Label

Answer 42

Question 43

Explain pacinian corpuscles

Answer 43