Deck 8: B--Muscle Physiology

Question 1

Use this figure to answer the corresponding questions. Some questions may have more than one answer.
Which two labeled parts serve as anchoring sites for the body's largest protein molecule? ____

Answer 1

7 and 9

Question 2

Use this figure to answer the corresponding questions. Some questions may have more than one answer.
The region labeled ____ contains only three different proteins.

Answer 2

2

Question 3

Use this figure to answer the corresponding questions. Some questions may have more than one answer.
Which region(s) marked by arrows or brackets do not change length during normal contraction and relaxation of the muscle fiber? ____

Answer 3

4

Question 4

Describe how glycolysis, creatine, and mitochondria are important to a skeletal muscle fiber's ability to obtain energy for contraction.

Question 5

Distinguish between twitch summation and motor recruitment in a skeletal muscle.

Question 6

Use this figure to answer the corresponding questions. Some questions may have more than one answer.
Number ____ identifies the functional unit of skeletal muscle.

Question 7

Compare and contrast the different types of muscle contractions. Include the following in your

Question 8

Describe calcium's role in the contraction of the sarcomere in skeletal and cardiac muscle tissues. Include the following in your

Question 9

Use this figure to answer the corresponding questions. Some questions may have more than one answer.
Calcium ions must bind specifically to part ____ in order for the muscle fiber to contract.

Question 10

Use this figure to answer the corresponding questions. Some questions may have more than one answer.
Actin is not found in the part(s) labeled ____________________.

Question 11

How does contraction of smooth muscle differ from that of skeletal muscle? Include the following in your