Question

Select all the possible changes that would cause stroke volume to increase.

a) Increased afterload
b) Venous dilation
c) Increased diastolic blood pressure
d) Sympathetic stiμlation of the μscle cells
e) Decreased diastolic blood pressure
f) Increased preload

Answer 1

Possible changes that would cause stroke volume to increase include venous dilation, increased preload, and sympathetic stimulation of muscle cells.

Step-by-step explanation:

The possible changes that would cause stroke volume to increase include:

1. Venous dilation: When the veins dilate, they can hold more blood, increasing the amount of blood returned to the heart and subsequently increasing stroke volume.
2. Increased preload: Preload refers to the amount of blood that fills the ventricles during diastole. When preload increases, the ventricles are stretched more, leading to a stronger contraction and increased stroke volume.
3. Sympathetic stimulation of the muscle cells: Sympathetic stimulation increases the force of ventricular contraction, resulting in an increase in stroke volume.