Question 1

When a sarcomere contracts and thin filaments move over thick filaments you would expect to see ________.

Accepted Answer

A)   the H zone to appear wider
B)   the I bands to appear smaller
C)   the I bands to appear wider
D)   the A band to appear darker

Question 2

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Accepted Answer

A) True 
 B)False

Question 3

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be ________.

Accepted Answer

A)   because they are slower to respond, slow oxidative fibers must be stimulated first in order to contract simultaneously with the faster fibers
B)   there is little to no benefit from recruiting slow oxidative fibers first and therefore it is in fact fast glycolytic fibers that will be recruited first
C)   recruiting slow oxidative fibers early helps to tire them out first so that they won't interfere with the more powerful contractions of fast glycolytic fibers
D)   this will help to allow for fine control with delicate contractile force with a small stimulus

Question 4

What is the functional unit of a skeletal muscle called?

Accepted Answer

A)   a myofibril
B)   the sarcoplasmic reticulum
C)   a sarcomere
D)   a myofilament

Question 5

What structure in skeletal muscle cells functions in calcium storage?

Accepted Answer

A)   intermediate filament network
B)   sarcoplasmic reticulum
C)   mitochondria
D)   myofibrillar network

Question 6

Match the following:
-The situation in which contractions become stronger due to stimulation before complete relaxation occurs.

Accepted Answer

A)  Tetanus
B)  Maximal stimulus
C)  Wave summation
D)  Muscle tone
E)  Multiple motor unit summation

Question 7

Figure 9.1
Using Figure 9.1, match the following:
-Individual muscle fiber.

Accepted Answer

A)  A
B)  E
C)  D
D)  C
E)  B

Question 8

Which of the following statements is most accurate?

Accepted Answer

A)   T tubules may be sliding during isotonic contraction.
B)   Myofilaments slide during isometric contractions.
C)   Muscle tension remains relatively constant during isotonic contraction.
D)   The I band lengthens during isotonic contraction.

Question 9

Although all the anatomical parts of muscle work together to give it it's characteristics,which of the following proteins listed below would be most associated with the characteristics of extensibility?

Accepted Answer

A)   elastic (titin)  filaments
B)   potassium (K+)  leak channels
C)   acetylcholine receptors in the motor end plate
D)   thick (myosin)  filaments

Exam 9: Muscles and Muscle Tissue

Although all the anatomical parts of muscle work together to give it it's characteristics,which of the following proteins listed below would be most associated with the characteristics of extensibility?

Correct Answer
verified

When a sarcomere contracts and thin filaments move over thick filaments you would expect to see ________.

Correct Answer
verified

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be ________.

Correct Answer
verified

What structure in skeletal muscle cells functions in calcium storage?

Correct Answer
verified

What is the functional unit of a skeletal muscle called?

Correct Answer
verified

Figure 9.1 Using Figure 9.1, match the following: -Individual muscle fiber.

Correct Answer
verified

Which of the following statements is most accurate?

Correct Answer
verified

Match the following: -The situation in which contractions become stronger due to stimulation before complete relaxation occurs.

Correct Answer
verified

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Correct Answer
verified

Exam 9: Muscles and Muscle Tissue

Although all the anatomical parts of muscle work together to give it it's characteristics,which of the following proteins listed below would be most associated with the characteristics of extensibility?

Correct AnswerverifiedShow Answer

When a sarcomere contracts and thin filaments move over thick filaments you would expect to see ________.

Correct AnswerverifiedShow Answer

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be ________.

Correct AnswerverifiedShow Answer

What structure in skeletal muscle cells functions in calcium storage?

Correct AnswerverifiedShow Answer

What is the functional unit of a skeletal muscle called?

Correct AnswerverifiedShow Answer

Figure 9.1 Using Figure 9.1, match the following: -Individual muscle fiber.

Correct AnswerverifiedShow Answer

Which of the following statements is most accurate?

Correct AnswerverifiedShow Answer

Match the following: -The situation in which contractions become stronger due to stimulation before complete relaxation occurs.

Correct AnswerverifiedShow Answer

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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