Heart Lab Study Guide

Comprehensive practice flashcards covering heart anatomy, circulation pathways, the cardiac conduction system, EKG wave activities, and arterial pulse points.

The vessel that returns deoxygenated blood from the upper body to the right atrium is the __________.

Superior vena cava

The large artery that carries oxygenated blood out of the left ventricle to the body is the __________.

Aorta

The __________ valve is found between the left atrium and the left ventricle.

Mitral (bicuspid) valve

The structures that anchor the heart valves to the papillary muscles are the __________.

Chordae tendineae

The wall that separates the right and left ventricles is the __________.

Interventricular septum

The muscular layer of the heart wall is known as the __________.

Myocardium

In an anterior view, the pointed bottom portion of the heart is referred to as the __________.

Apex

In a posterior view, the large vein that gathers blood from the heart tissue and returns it to the right atrium is the __________.

Coronary sinus

The __________ circuit moves blood between the heart and the lungs.

Pulmonary Circuit

The __________ circuit moves blood between the heart and the rest of the body tissues.

Systemic Circuit

The pacemaker of the heart, which typically fires at a rate of $75\,bpm$, is the __________ node.

Sinoatrial (SA)

The electrical impulse is delayed for approximately __________ at the atrioventricular (AV) node.

$0.1s$

The specific components of the conduction system that fire at a rate of $30\,bpm$ are the __________.

Purkinje Fibers

The P wave on an EKG represents the electrical event of __________.

atrial depolarization

The QRS complex represents the electrical event of __________.

ventricular depolarization

The mechanical event corresponding to the T wave is __________.

ventricular relaxation

During the QRS complex, ventricular depolarization begins at the __________ part of the heart.

apex

According to the EKG timeline, __________ occurs during the same time as the QRS complex.

atrial repolarization

The pulse point located in the neck is the __________ artery.

Common carotid

The pulse point found on the top of the foot is the __________ artery.

Dorsalis pedis

The __________ artery is the pulse point located behind the knee.

Popliteal

The pulse point located at the wrist on the thumb side is the __________ artery.

Radial