Physiology Exam 3 Cardiovascular Physiology Latest Update Questions and 100% Verified Correct Answers Guaranteed A+

Physiology Exam 3 Cardiovascular Physiology
Latest Update 2025-2026 65 Questions and 100%
Verified Correct Answers Guaranteed A+

- CORRECT ANSWER:


A-Fib: - CORRECT ANSWER: SA node failure; associated with ~ 15-25% of strokes due
to blood clots



Action potential in a contractile cell: - CORRECT ANSWER:



All events associated with the flow of blood through the heart during a single heart beat:
- CORRECT ANSWER: cardiac cycle



Amount of blood pumped per ventricular contraction: - CORRECT ANSWER: stroke
volume

average: 70 mL



Arterial duct: - CORRECT ANSWER: arterial ligament


Autorhythmic cells (aka ________) in cardiac muscle synchronize the
_________________ in cardiac muscle. - CORRECT ANSWER: pacemakers;
contractile cells


AV Node is involved in the: - CORRECT ANSWER: refractory period



Blood circulation through the body is essentially one-way through two circuits: -
CORRECT ANSWER: (1) Pulmonary circuit

, (2) systemic circuit



Cardiac arrest: - CORRECT ANSWER: - sudden loss of regular heartbeat (VFib)

- loss of consciousness
-without intervention, death in minutes



Cardiac muscle _________. - CORRECT ANSWER: myyogenic



Cardiac muscle contractions operate similarly to those of: - CORRECT ANSWER:
skeletal muscle



cardiac output during strenuous exercise: - CORRECT ANSWER: up to 40
L/min/ventricle



Cardiac Output summary table: - CORRECT ANSWER:


Cardiac Output: - CORRECT ANSWER: Heart rate X stroke volume



Changes in stroke volume largely depend on: - CORRECT ANSWER: ventricular
contractility



Changes in stroke volume: - CORRECT ANSWER: is more complex regulation than for
heart hrate



conducting system of the heart: - CORRECT ANSWER: fibrous skeleton -- electrical
barrier



congenital heart defects: - CORRECT ANSWER: about 1:100 live births
most common major birth defect