Bio 669 Quiz 2- Starred On Quiz Questions And Answers
With 100% Correct Answers Latest Update 2024/2025.
When both Na+ and K+ are permeable at the same time (as in opening ion channels at the
neuromuscular junction allowing both to cross), what will happen to the membrane potential? -
ANSWER The cell membrane depolarized
Graded potentials are all of the following EXCEPT: - ANSWER Impulses which travel without
diminishing over distance
Movement of potassium down its electrochemical gradient will result in what effect on membrane
potential? - ANSWER Hyperpolarization
The reticular formation is responsible for: - ANSWER Wakefulness and vital reflexes
Damage to Broca's area is most likely to cause: - ANSWER Inability/ difficulty in forming words
(expressive aphasia)
A stroke affecting the temporal lobe would most likely affect: - ANSWER a. Primary auditory
complex (language recognition)
A stroke affecting the temporal lobe is most likely to show signs and symptoms affecting the -
ANSWER Patient's speech or hearing
Vascular smooth muscle is most impacted by what type of receptor(what receptor is most present -
ANSWER Alpha1
The alpha-1 receptor will, upon binding to its ligand, will result in which of the following effects: -
ANSWER Excitation and vasoconstriction of vascular smooth muscle
Ephedra is a sympathomimetic, meaning it has sympathetic nervous system activating effects. As such,
it may be assumed to have all of the following side effects EXCEPT: - ANSWER Diarrhea and
abdominal cramping
The parasympathetic nervous system is associated with which of the following: - ANSWER
Ganglia that are close the target organ
The ____ division of the autonomic nervous system helps conserve energy and the body's resources
(rest and digest) and uses _____ as its neurotransmitter(s). - ANSWER Parasympathetic;
acetylcholine
Parasympathetic system stimulation causes all of the following except: - ANSWER Increasing
vasodilation of vascular smooth muscle
The effect of sympathetic nervous system activation on metabolism includes all of the following
EXCEPT: - ANSWER Storage of glucose as glycogen is enhanced
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