Muscle System II Chapter 13

Question 1

Each axon within a nerve stimulates a number of ____ ___

Answer 1

muscle fibers

Question 2

A nerve fiber with all the muscle fibers it innervates (connects to) is called a _____ ___

Answer 2

motor unit

Question 3

All muscle fibers within a __________ are stimulated all at once
What varies is the number of _______ within a motor unit

Answer 3

Motor unit
muscle fibers

Question 4

The ocular muscles that move the eye have one motor neuron that innervates (connects to) ______ muscle fibers

Answer 4

23

Question 5

The gastrocnemius muscle (chief calf muscle) has one motor neuron that innervates (connects to) ____ muscle fibers

Answer 5

1,000

Question 6

The smaller the motor unit, the _____ and more ____ the muscle movements

Answer 6

smaller
exact

Question 7

The larger the motor unit, the ____ and less ___ the muscle movement

Answer 7

larger
exact

Question 8

Achy muscle, commonly caused by overuse or overstretching

Answer 8

Myalgia

Question 9

Strong, painful muscle spasms due to strenuous activity

Answer 9

cramps

Question 10

Chronic widespread muscle pain, tenderness and stiffness

Answer 10

Fibromyalgia

Question 11

Cancer found in muscles and connective tissue

Answer 11

sarcoma

Question 12

progressive degeneration and weakening of muscles

Answer 12

muscle dystrophy

Question 13

What are the 3 ways that ATP is generated

Answer 13

Creatine phosphate pathway
fermentation
cellular respiration

Question 14

When contraction begins, muscle cells break down creatine phosphate to produce ATP. When nesting, muscle cells rebuild their supply of creatine phosphate

Answer 14

Creatine phosphate pathway

Question 15

Used to create ATP fast
when resting, muscle cells metabloize lactate, re-forming as much glucose and then glycogen as possible.

Answer 15

fermentation

Question 16

For the long-term ATP production
muscle cells switch to this to produce ATP aerobically

Answer 16

Cellular Respiration

Question 17

Relies on creatine phosphate pathway and fermentation/anaerobic ways to make ATP

Answer 17

Fast-Twitch

Question 18

Prefers cellular respiration/aerobic ways to make ATP

Answer 18

Slow-Twitch

Question 19

promotes an increase in motor unit production

Answer 19

steroids on muscles

Question 20

Tetanus neurotoxin is an ingredient in this and it blocks the release of acetylcholine which causes paralysis to the muscle

Answer 20

botox