Which of the Following Statements Is False Regarding Atrial Systole

question 27

Multiple Choice

Which of the following statements is false regarding atrial systole?

• A) The atria depolarize and contract together creating decreased volume and higher pressure in the atria than the ventricles.
• B) The atria then repolarize and relax.
• C) Blood rushes in from the vena cavae and pulmonary veins to fill the right and left atria.
• D) The increased pressure pushes blood through the AV valves into the atria.

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Definitions:

Interstitial Pressure

The pressure within the space between cells, which can influence fluid movement and absorption in tissues.

Capillary

The smallest blood vessels in the body which facilitate the exchange of water, oxygen, carbon dioxide, and other nutrients and waste substances between blood and tissues.

Carotid Chemoreceptors

Sensory receptors located in the carotid arteries that detect changes in blood oxygen levels, helping regulate breathing.

Baroreceptors

Sensory nerve endings located in the walls of blood vessels that detect changes in blood pressure and help regulate it.