Asked by Karen Browne on Jun 26, 2024
Verified
If the heart receives more sympathetic stimulation than parasympathetic stimulation, the heart will
A) increase its rate and force of contraction.
B) contract with greater force but at a slower rate.
C) decrease both its rate and force of contraction.
D) contract with less force but at a faster rate.
E) decrease rate, but increase force of contraction.
Sympathetic Stimulation
Activation of the sympathetic nervous system, leading to "fight or flight" responses such as increased heart rate and blood flow to muscles.
Parasympathetic Stimulation
Activation of the parasympathetic nervous system, leading to a decrease in heart rate and increase in digestive activity.
- Familiarize oneself with the relationship between autonomic nervous system behavior and changes in heart rate and contractility.
Verified Answer
CE
Catherine Eve YngenteJul 03, 2024
Final Answer :
A
Explanation :
Sympathetic stimulation of the heart increases both the heart rate and the force of contraction, aligning with the body's "fight or flight" response to stress or danger.
Learning Objectives
- Familiarize oneself with the relationship between autonomic nervous system behavior and changes in heart rate and contractility.
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