NSCA-CSCS Exam Chapter 1 questions with correct answers
22 views 0 purchase
Course
NSCA
Institution
NSCA
To what structures do the cross-bridges attach during muscle action? Answer Actin
Which substance regulates muscle actions? Answer Calcium
Which substance acts at the neuromuscular junction to excite the muscle fibers of a motor unit? Answer Acetylcholine
Which muscle fiber type is the MOS...
NSCA-CSCS Exam Chapter 1 questions with
correct answers
To what structures do the cross-bridges attach during muscle action? Answer✓✓
Actin
Which substance regulates muscle actions? Answer✓✓ Calcium
Which substance acts at the neuromuscular junction to excite the muscle fibers of a
motor unit? Answer✓✓ Acetylcholine
Which muscle fiber type is the MOST beneficial for a marathon runner?
Answer✓✓ Type I
When throwing a baseball, an athlete's arm is rapidly stretched just prior to
throwing the ball. Which of the following structures detects and responds to that
stretch by reflexively increasing muscle activity? Answer✓✓ Muscle Spindle
From what is the heart's electrical impulse normally initiated? Answer✓✓ SA
Node
Which of the following occurs during the QRS complex of a typical ECG?
Answer✓✓ repolarization of the atrium and depolarization of the ventricle.
A-Band Answer✓✓ overlapping actin and myosin
acetylcholine Answer✓✓ Arrival of the action potential at the nerve terminal
causes release of a neurotransmitter, ______, which diffuses across the
, neuromuscular junction. Once a sufficient amount is released, an action potential is
generated across the sarcolemma, and the (muscle)fiber contracts.
Actin and Myosin Answer✓✓ contractile proteins in muscle
Action potential Answer✓✓ the change in electrical potential associated with the
passage of an impulse along the membrane of a muscle cell or nerve cell.
All-or-none Principle Answer✓✓ the strength by which a nerve or muscle fiber
responds to a stimulus is independent of the strength of the stimulus. If the
stimulus exceeds the threshold potential, the nerve or muscle fiber will give a
complete response; otherwise, there is no response.
Alveolar Pressure Answer✓✓ the pressure in centimeters of water pressure
(cmH2O) held within the alveoli of the lungs during inspiration. The pressure
value is the difference from atmospheric pressure, which is considered zero when
establishing the value.
Alveoli Answer✓✓ where gases are exchanged in respiration.
Aortic Valve Answer✓✓ prevents backflow from the aorta into the ventricles
during ventricular relaxation (diastole)
Arterial System Answer✓✓ Carries blood away from the heart
Arteriole Answer✓✓ small branches of arteries that act as control vessels through
which blood enters the capillaries.Play a major role in the regulation of blood flow
to the extremeities.
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 cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
