BIO 669 Exam 2 UPDATED QUESTIONS
AND CORRECT ANSWERS
When both Na+ and K+ are permeable at the same time, what will happen to the membrane potential?
- CORRECT ANSWER The cell membrane depolarized
Graded potentials are all of the following except: - CORRECT ANSWER Impulses which
travel without diminishing over distance
Movement of K+ down its electrochemical gradient will result in what effect on membrane potential?
- CORRECT ANSWER Hyperpoloarization
The reticular formation is responsible for? - CORRECT ANSWER Wakefulness and vital
reflexes
Damage to Broca's area is mostly likely to cause: - CORRECT ANSWER inability/difficulty in
forming words (expressive aphasia)
A stroke affecting the temporal lobe would most likely affect: - CORRECT ANSWER Primary
auditory complex (language recognition)
Vascular smooth muscle is most impacted by what type of receptor? - CORRECT
ANSWER Alpha 1
The alpha-1 receptor will, upon binding to its ligand, will result in which of the following effects: -
CORRECT ANSWER Excitation and vasoconstriction of vascular smooth muscles
A stroke affecting the temporal lobe is most likely to show signs and symptoms affecting the: -
CORRECT ANSWER Patient's speech or hearing
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 - CORRECT
ANSWER Diarrhea and abdominal cramping
AND CORRECT ANSWERS
When both Na+ and K+ are permeable at the same time, what will happen to the membrane potential?
- CORRECT ANSWER The cell membrane depolarized
Graded potentials are all of the following except: - CORRECT ANSWER Impulses which
travel without diminishing over distance
Movement of K+ down its electrochemical gradient will result in what effect on membrane potential?
- CORRECT ANSWER Hyperpoloarization
The reticular formation is responsible for? - CORRECT ANSWER Wakefulness and vital
reflexes
Damage to Broca's area is mostly likely to cause: - CORRECT ANSWER inability/difficulty in
forming words (expressive aphasia)
A stroke affecting the temporal lobe would most likely affect: - CORRECT ANSWER Primary
auditory complex (language recognition)
Vascular smooth muscle is most impacted by what type of receptor? - CORRECT
ANSWER Alpha 1
The alpha-1 receptor will, upon binding to its ligand, will result in which of the following effects: -
CORRECT ANSWER Excitation and vasoconstriction of vascular smooth muscles
A stroke affecting the temporal lobe is most likely to show signs and symptoms affecting the: -
CORRECT ANSWER Patient's speech or hearing
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 - CORRECT
ANSWER Diarrhea and abdominal cramping
