Author Question: Which percentage estimate is indicative of the adrenal medulla's effect on the sympathetic nervous ... (Read 69 times)

genevieve1028 · **on:** Jul 23, 2018

Which percentage estimate is indicative of the adrenal medulla's effect on the sympathetic nervous system?

1. 6070
2. 75100
3. 2550
4. 1020

Question 2

The hypothalamus sends messages through the brainstem and spinal cord to the autonomic nervous system, causing which sympathetic effects?

1. Decreased blood pressure
2. Decreased temperature
3. Increased heart rate
4. Increased peristalsis

reversalruiz · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

Correct Answer: 3
Rationale 1: This is an inaccurate estimate of the adrenal medulla's effect on the sympathetic nervous system.
Rationale 2: This is an inaccurate estimate of the adrenal medulla's effect on the sympathetic nervous system.
Rationale 3: 2550 of all sympathetic responses are due to circulating hormones from the adrenal medulla.
Rationale 4: This is an inaccurate estimate of the adrenal medulla's effect on the sympathetic nervous system.
Global Rationale: 2550 of all sympathetic responses are due to circulating hormones from the adrenal medulla.

Answer to Question 2

Correct Answer: 3
Rationale 1: Decreased blood pressure is a parasympathetic response.
Rationale 2: Decreased temperature is a direct response of hypothalamic dysfunction.
Rationale 3: An increase in heart rate is a sympathetic response.
Rationale 4: Increased peristalsis is a parasympathetic response.
Global Rationale: An increase in heart rate is a sympathetic response. Decreased blood pressure and increased peristalsis are parasympathetic responses. Decreased temperature is a direct response of hypothalamic dysfunction.