Cardiac/ and GI

Each normal heartbeat is initiated by which of the following?

During on cardiac Cycle, which of the following occurs?

Which of the following detects changes in blood pressure?

Epinepherine increases blood pressure because it does what?

When blood pressure decreases, the kidneys help raise it by secreting which of the following?

Which of the following prevents the backflow of blood in the veins?

A patient has a bilateral mastectomy, so the nurse obtains BP readings from a patients legs. The pt's baseline in arms was 112/78. What does the nurse expect it to be when taking BP in legs?

The nurse obtains a lower blood pressure in the pt's l. arm than the right. Which of the following arms should the nurse use, for ongoing BP measurement?

The nurse checking pts bp for orthostatics, patient asks why is there such a difference between bp laying and sitting. Nurses best response?