A&P Straighterline Final EXAM QUESTIONS WITH ACTUAL CORRECT ANSWERS OF CURRENTLY TESTING SOLUTIONS
8 views 0 purchase
Course
A&P Straighterline
Institution
A&P Straighterline
The text covers various topics related to anatomy and physiology, including muscle function, muscle contractions, muscle fiber characteristics, nervous system involvement in muscle strength, and muscle tissue oxygenation. It also discusses the structure and function of skeletal muscles, neuromuscul...
A&P Straighterline Final EXAM
QUESTIONS WITH ACTUAL CORRECT
ANSWERS OF CURRENTLY TESTING
SOLUTIONS
An isotonic contraction is described as
Select one:
a. action potential frequency is high enough that no relaxation of muscle fibers occurs.
b. a muscle produces constant tension during contraction.
c. a muscle produces an increasing tension during contraction.
d. a muscle produces increasing tension as it shortens.
e. a muscle produces tension, but the length of the muscle is increasing - ANSWER-b. a muscle produces
constant tension during contraction.
After contraction has occurred, the calcium is
Select one:
a. destroyed by cholinesterase.
b. chemically bound to the cross bridges.
c. secreted by the Golgi apparatus to the outside of the cell.
d. released from troponin.
e. returned to the sarcolemma. - ANSWER-d. released from troponin.
Increased strength of a trained muscle is due to
Select one:
,a. an increased number of muscle fibers.
b. the nervous system's ability to recruit a large number of motor units simultaneously.
c. elimination of unnecessary enzymes and metabolic pathways.
d. elimination of all fat deposits.
e. elimination of unnecessary connective tissue. - ANSWER-b. the nervous system's ability to recruit a
large number of motor units simultaneously.
Skeletal muscle fibers
Select one:
a. possess striations.
b. can contract but are not extensible or excitable.
c. do not require nerve innervation to contract.
d. increase dramatically in number after birth.
e. are found in the walls of the stomach. - ANSWER-a. possess striations.
Which of the following correctly describes myoglobin's special function in muscle tissue?
Select one:
a. breaks down glycogen
b. synthesizes ATP
c. acts as a reservoir for oxygen
d. produces action potentials
e. stores glucose - ANSWER-c. acts as a reservoir for oxygen
The outside of the resting plasma membrane is __________ relative to the inside of the resting plasma
membrane.
Select one:
,a. positively charged
b. negatively charged
c. electrically neutral
d. recharged
e. None of these choices is correct. - ANSWER-a. positively charged
Fascia
Select one:
a. surrounds individual muscles.
b. separates muscle fibers.
c. connects muscles to bone.
d. is a type of muscle tissue.
e. is a type of nerve tissue. - ANSWER-a. surrounds individual muscles.
When repolarization of the cell membrane is complete, the
Select one:
a. cell dies.
b. cell regenerates.
c. cell no longer has a potential difference across its membrane.
d. cell is no longer responsive.
e. original polarity of the cell is restored. - ANSWER-e. original polarity of the cell is restored.
Which of the following actions is caused by contraction of skeletal muscle?
Select one:
a. contraction of the heart
, b. moving your feet in walking
c. movement of food through the digestive tract
d. emptying of the urinary bladder
e. vasoconstriction - ANSWER-b. moving your feet in walking
What is smooth muscle tone?
Select one:
a. can rapidly develop action potentials
b. shallow invaginations of cell membrane
c. relatively constant tension maintained for a period of time
d. intracellular cytoskeleton
e. enzyme that removes phosphate from myosin - ANSWER-c. relatively constant tension maintained for
a period of time
The sites where a chemical substance is transmitted from the presynaptic terminal of an axon to the
postsynaptic membrane of a muscle fiber are called
Select one:
a. neuromuscular junctions.
b. sarcomeres.
c. myofilaments.
d. Z disks.
e. cell body of neuron. - ANSWER-a. neuromuscular junctions.
List the following structures in order from smallest to largest.
(1) muscle fiber
(2) myofilament
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller DrJudy. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $20.49. You're not tied to anything after your purchase.
