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BIO 336 practice questions With Complete Solutions
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BIO 336 practice questions With Complete Solutions
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BIO 336 practice questions With Complete SolutionsA severe spinal cord injury at _____ will probably result in
paraplegia while an injury at ____ will result in quadriplegia?
Correct Answers T10,C4
A triad consists of one _____ and two_____. Correct Answers
T-tube, terminal cisternae
Administration of which of the following would help patients
with myasthenia gravis (decreased # of ACH receptors) Correct
Answers A cholinesterase inhibitor
At the neuromuscular junction an action potential causes voltage
gated calcium channels to open in the ______. Correct Answers
terminal buttons
Botuliam toxin is known to prevent ______ via destruction of
the ______ in the terminal buttons thus resulting in ______
paralysis. Correct Answers Exocytosis, SNARE proteins,
flaccid
Damage to the motor cortex in the left hemisphere of the brain
usually results in paralysis of the ______ side of the body?
Correct Answers right
Dantrolene, which blocks the ryanodine receptors would cause
_____ paralysis? Correct Answers Flaccid
Detachment of myosin from actin occurs in which step of the
cross-bridge cycle? Correct Answers 3
, During a nerve action potential the voltage gated K+ channels
open _____, while the voltage gated Na+ channels open_____.
Correct Answers second, first
During muscular contraction, a muscle action potential causes
Ca++ ions to leave the ____ via ________. Correct Answers
Terminal cisternae, ryanodine receptors
During muscular contraction, which of the following gets
shorter or smaller in length? Correct Answers sarcomere
During rest, all of the calcium in skeletal muscle is requested (ie.
Pumped back) into the ___ by _______ Correct Answers
Sarcoplasmic reticulum, SERCA Ca++ pumps
Fast twitch fibers primarily rely on ____ to remake ATP while
slow twitch fibers primarily rely on ________. Correct Answers
Anaerobic glycolysis, aerobic mitochondria
If a person did 10 push ups, how many times would calcium
ions cycle between the sarcoplasmic reticulum and the
extracellular fluid (ie. Blood) outside the muscle cell? Correct
Answers 10
If a person was exposed to a poison that inhibited the NA+/K+
pump, which of the following would occur. Correct Answers
Hyponatremia and Hyperkalemia
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