Which of the following happens during atrial systole?
A. The atria then repolarize and relax.
B. The increased pressure pushes blood through the AV valves into the atria.
C. Blood rushes in from the vena cavae and pulmonary veins to fill the right and left atria.
D. The atria depolarize and contract together creating decreased volume and higher pressure in the atria than the ventricles.
Answer: D
You might also like to view...
Neural tissue
A) carries information from one part of the body to another. B) can contract. C) fills spaces in the body. D) stores energy. E) forms glands.
The serous fluid within the pericardial cavity works to
A. lubricate membranes of the pericardium. B. slow the heart rate. C. equalize the pressure in the great vessels. D. eliminate blood pressure spikes. E. All of the choices are correct.
Place these terms in the typical sequence in which they appear in the scientific process: experimental data, theory, model, observation, hypothesis, replication.
A) observation, replication, model, experimental data, hypothesis, theory B) replication, hypothesis, experimental data, theory, model, observation C) theory, observation, experimental data, hypothesis, replication, model D) experimental data, theory, model, observation, hypothesis, replication E) observation, hypothesis, experimental data, replication, model, theory
Respiration is an example of a(n) __________ loss of H2O
Fill in the blank(s) with correct word