Straighterline Anatomy and Physiology 1 Lab
BIO201L Lab 7 The Muscular System Quiz 2023
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BIO201L LAB_V3
Lab 7 The Muscular System
Started on Saturday, June 10, 2023, 6:37 PM
State Finished
Completed on Saturday, June 10, 2023, 6:56 PM
Time taken 18 mins 17 secs
Grade 35.00 out of 35.00 (100%)
Question 1
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Question text
What is the difference between an origin and an insertion?
Select one:a. Origins occur where a muscle meets the stable bone, and insertions occur where a muscle meets
the mobile bone.
b. Origins occur where a muscle meets the mobile bone, and insertions occur where a muscle
meets the stable bone.
c. Origins occur where a muscle begins to grow, and insertions occur where muscle growth ceases.
d. Origins occur where muscle growth ceases, and insertions occur where a muscle begins to grow.
Question 2
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What is the functional purpose of calcium (Ca2+) in muscle contraction?
Select one:
a. To cause a positional change in troponin.
b. To cause a positional change in actin.
c. To cause a positional change in tropomyosin.
d. To cause a positional change in myosin.
Question 3
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Which of the following is true regarding isotonic and isometric contractions?
Select one:
a. Isotonic contractions occur when muscle tension remains the same as muscle length changes.
b. Isometric contractions occur when the muscle length remains the same as muscle tension
increases.
c. Both of the above are true.
d. Neither of the above are true.Question 4
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Question text
The Z-line is:
Select one:
a. A protein disk that bisects and anchors the I-band.
b. The area between filaments.
c. A bundle of myofilaments.
d. Extensions of the sarcolemma.
Question 5
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Question text
Muscle fiber contraction occurs via the generation and transmission of:
Select one:
a. Excitation-Contraction Coupling
b. Action Potentials
c. Power Strokes
d. Twitch Fibers
Question 6
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Question textThe three major types of skeletal muscle are cardiac, skeletal, and digestive.
Select one:
a. True
b. False
Question 7
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Question text
The positional change in tropomyosin exposes myosin binding sites on what protein?
Select one:
a. Troponin
b. Myosin Head
c. Adenosine Triphosphate
d. Actin
Question 8
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Question text
The criteria for naming muscles include:
Select one:
a. Muscle Location
b. Number of Origins
c. Fascicle Direction
d. All of the above.
Question 9
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Question text
While flexing the forearm at the elbow joint the:
Select one:
a. Deltoid acts as a synergist.
b. Deltoid acts as an antagonist.
c. Triceps brachii acts as a synergist.
d. Triceps brachii acts as an antagonist.
Question 10
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Question text
What is the function of a transverse tubule?
Select one:
a. Calcium Storage and Electrical Transmission
b. Electrical Transmission and Protection
c. Myosin Anchor and Protection
d. Electrical Transmission and Myosin Anchor [Show Less]