Week 1 & 2 Exam: BIOS252 / BIOS
252 (Latest Update )
Anatomy & Physiology II with Lab |
Review Questions with Verified
Answers| 100% Correct | Grade A -
Chamberlain
Question:
True or False: Smooth muscles are characterized by striations.
Answer:
False
Question:
True or False: Smooth muscles are found in hollow organs of the body.
Answer:
True
,Question:
True or False: Smooth muscles contain actin and myosin filaments.
Answer:
True
Question:
True or False: Smooth muscle is innervated by the somatic nervous system.
Answer:
False
Question:
True or False: Cold usually relaxes smooth muscle while heat usually contracts
it. Smooth muscles relax under cold weather or at lower temperature
conditions.
Answer:
False
Question:
True or False: Smooth muscle receptors, for a neurotransmitter, are found all
over the cell instead of only being found at a motor end plate.
Answer:
True
,Question:
True or False: Smooth muscle can be excited spontaneously.
Answer:
True
Question:
Voltage-gated channels respond to?
Answer:
depolarization of the sarcolemma (cell membrane)
Question:
Which of the following is attached to intercalated discs?
Answer:
Cardiac Muscle
Question:
Smooth muscle can be excited in which of the following ways? Select all that
apply.
Answer:
Smooth muscle can be excited through autonomic nerve fibers and
neurotransmitters, chemicals such as hormones, and temperature changes.
Additional ways include stretching and autorhymicity.
, Question:
Why can smooth muscle maintain a contraction for longer periods of time?
Select all that apply.
Answer:
they are resistant to fatigue
require only minimal amounts of energy
Question:
Latch-bridge mechanism
Answer:
Is a feature of smooth muscle that allows for the actin and myosin to remain
attached to one another but no longer use up adenosine triphosphate (ATP).
Question:
True or False: The myocytes of the smooth muscle have a large size.
Answer:
False
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