In an isometric contraction, the ,uncle develops tension but does not?
A. Shorten
B. Lengthen
C. Expend energy
D. Conduct electrical current
E. Exhibit elasticity
Answer:
A. Shorten
QUESTION
_________ is the summation of postsynaptic potentials in response to sti...
BIOS 252 / BIOS252 Anatomy and
Physiology II Comprehensive Exam | 100%
Correct| Questions and Verified Answers
(2024/2025 Update) -Chamberlain
QUESTION
In an isometric contraction, the ,uncle develops tension but does not?
A. Shorten
B. Lengthen
C. Expend energy
D. Conduct electrical current
E. Exhibit elasticity
Answer:
A. Shorten
QUESTION
_________ is the summation of postsynaptic potentials in response to stimuli that occur at
different locations in the membrane of a postsynaptic cell at the same time
A. Cortical summation
B. Spatial summation
C. Temporal summation
D. Tactile summation
E. Olfactory summation
Answer:
B. Spatial summation
,QUESTION
Which of the following molecules energizes the myosin club-head so that it can pull the actin
molecule?
A. Troponin
B. Tropomyosin
C. Calcium
D. Potassium
E. ATP
Answer:
E. ATP
QUESTION
Which of the following muscles is the major agonist for plantar-flexion of the foot
A. Gastrocnemius
B. Tibialis anterior
C. Triceps femoris
D. Inferior rectus
E. Peroneus
Answer:
A. Gastrocnemius
QUESTION
Which muscle is responsible for movement of the eye medically (adduction)?
A. Medial rectus
B. Lateral rectus
C. Inferior rectus
D. Superior oblique
E. Inferior oblique
, Answer:
A. Medial rectus
QUESTION
EPSPs (excitatory postsynaptic potentials) occur when
A. More potassium ions than usual leak out of a cell
B. More calcium ions then usual leak out of a cell
C. Chloride ions enter the cell
D. Sodium channels are opened and sodium enters the cell
E. Sodium channels are opened and sodium flows out of the cell
Answer:
D. Sodium channels are opened and sodium enters the cell
QUESTION
In skeletal muscle cells, the transverse tubule is an extension of the
A. Sarcomere
B. Sarcoplasmic reticulum
C. Sarcolemma
D. Perimysium
E. Terminal cisterna
Answer:
C. Sarcolemma
QUESTION
An inhibitory neurotransmitter ________ the postsynaptic membrane
A. Depolarizers
B. Repolarizes
C. Hyperpolarizes
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