Quiz 2 Questions & Answers
1. 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?
1. The cell membrane depolarized
2. Graded potentials are all of the followin...
1. 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?
1. The cell membrane depolarized
2. Graded potentials are all of the following EXCEPT:
a. Impulses which travel without diminishing over distance
3. Movement of potassium down its electrochemical gradient will result in what
effect on membrane potential?
a. Hyperpolarization
4. The reticular formation is responsible for:
a. Wakefulness and vital reflexes
5. Damage to Broca’s area is most likely to cause:
a. inability/difficulty in forming words (expressive aphasia)
6. A stroke affecting the temporal lobe would most likely affect:
a. Primary auditory complex (language recognition)
7. A stroke affecting the temporal lobe is most likely to show signs and symptoms
affecting the:
a. Patient’s speech or hearing
8. Vascular smooth muscle is most impacted by what type of receptor (what
receptor is most present):
a. Alpha 1
9. The alpha-1 receptor will, upon binding to its ligand, will result in which of the
following effects:
a. Excitation and vasoconstriction of vascular smooth muscle
10. 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:
a. Diarrhea and abdominal cramping
11. The parasympathetic nervous system is associated with which of the following:
a. Ganglia that are close to the target organ
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