In the image below, identify the component of the EKG that corresponds to the time when atrial repolarization would occur.

Which of the following hormones causes changes that lead to a decrease in blood pressure? (select all that apply)

What nerve(s) carry sympathetic impulses/stimulation to the blood vessels resulting in vasoconstriction?

Which of the following vessels below is found mainly in the kidneys and small intestine?

Which of the following structures prevents blood from flowing from the left ventricle back into the left atrium?

What effect would an increase in blood volume have on arterial blood pressure?

In the image below, identify the layer of the heart wall that provides contractile force for the heart.

Which of the following antibodies would you find in the plasma of a person with type AB blood?

What effect would a decrease in cardiac output have on arterial blood pressure?

An elderly patient is admitted to the hospital due to recent episodes of syncope (passing out). The patient has a history of heart failure resulting in decreased contractility of the heart. Based on this information, which of the following is most likely to occur to help maintain the patient’s cardiac output at homeostatic levels?