54. During strenuous exercise, which of the following changes most influences total peripheral resistance? A) Decreased blood viscosity B) Decreased sympathetic cholinergic activity C) Increased sympathetic adrenergic activity D) Vasodilation in skeletal muscle
54. During strenuous exercise, which of the following changes most influences total peripheral resistance? A) Decreased blood viscosity B) Decreased sympathetic cholinergic activity C) Increased sympathetic adrenergic activity D) Vasodilation in skeletal muscle
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Transcribed Image Text:54. During strenuous exercise, which of the following changes most influences total peripheral resistance?
A) Decreased blood viscosity
B) Decreased sympathetic cholinergic activity
C) Increased sympathetic adrenergic activity
D) Vasodilation in skeletal muscle
Expert Solution
Step 1
Peripheral resistance can be defined as the resistance applied by the blood vessels for the flow of blood and also for generating the blood pressure. It is generally measured by R (Reynold’s number), which can be obtained by dividing the pressure in mm Hg by flow in ml/sec.
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