1
Question
When a parasympathetic nerve supply to the heart is disturbed, the heart rate will
A. decrease
B. increase
C. hearts stops
D. heart beats without nervous control
A. decrease
B. increase
C. hearts stops
D. heart beats without nervous control
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Solution
When a parasympathetic nerve supply to the heart is disturbed, the heart rate will
a) decrease
b) increase
c) heart stops
d) heart beats without nervous control
Correct answer: (d) heart beats without nervous control
- The autonomic nervous system (ANS) controls the involuntary actions of the internal organs.
- There are two parts of the ANS- sympathetic and parasympathetic.
- Sympathetic system prepares the body for emergency situations while parasympathetic system re-establishes normal conditions after the extreme act is over.
Correct answer:
- For example, sympathetic nervous system increases while the parasympathetic nervous system decreases the heartbeat. Without input from either source, the heart will continue to beat at approximately 70-80 beats per minute.
a) decrease
b) increase
c) heart stops
d) heart beats without nervous control
Correct answer: (d) heart beats without nervous control
- The autonomic nervous system (ANS) controls the involuntary actions of the internal organs.
- There are two parts of the ANS- sympathetic and parasympathetic.
- Sympathetic system prepares the body for emergency situations while parasympathetic system re-establishes normal conditions after the extreme act is over.
Correct answer:
- For example, sympathetic nervous system increases while the parasympathetic nervous system decreases the heartbeat. Without input from either source, the heart will continue to beat at approximately 70-80 beats per minute.
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