Asked by Abdulahi Abdalla on May 21, 2024
Verified
Which of the following factors assists in the return of venous blood to the heart?
(1) Arterial dilation
(2) Valves in the veins
(3) Sympathetic stimulation
(4) Compression of veins by muscular movements
A) 1 and 2
B) 1, 2, 3
C) 1, 2, 3, 4
D) 2, 3, 4
E) 1, 3, 4
Venous Blood
Blood that is returning to the heart through veins after having circulated through the body, characterized by its dark red color due to lower oxygen content.
Sympathetic Stimulation
Activation of the sympathetic nervous system, resulting in physiological responses such as increased heart rate and blood flow to muscles.
- Determine the influence of different elements on the regulation of blood volume and venous return.
Verified Answer
RT
Rocel TagulaoMay 27, 2024
Final Answer :
D
Explanation :
Valves in the veins prevent backflow of blood, sympathetic stimulation increases venous return by vasoconstriction, and muscular movements compress veins, helping to push blood back to the heart. Arterial dilation does not directly assist venous return.
Learning Objectives
- Determine the influence of different elements on the regulation of blood volume and venous return.