Deck 1: Health and Wellness

Question 1

Approximately one third of the heart lies to the left of the midline of the sternum. The remaining two thirds lie to the right of the sternum.

Answer 1

False

Question 2

The base, or lower portion, of the heart is formed by the tip of the left ventricle.

Answer 2

False

Question 3

The heart is divided into _____ chambers but functions as a _____-sided pump.

A) 2; 4
B) 3; 2
C) 4; 2
D) 4; 3

Answer 3

4; 2

Question 4

An internal wall of connective tissue called the _____ separates the right and left ventricles.

A) septae
B) interventricular septum
C) coronary sinus
D) mediastinum

Question 5

The _______ is a double-walled sac that encloses the heart and helps protect it from trauma and infection.

A) myocardium
B) pericardium
C) endocardium
D) subendocardium

Question 6

The normal pacemaker of the heart is the _____, which is found in the _____.

A) SA node; left atrium
B) AV node; right atrium
C) SA node; right atrium
D) AV node; left atrium

Question 7

Which of the following circles around the left side of the heart and is embedded in the epicardium on the back of the heart?

A) Left anterior descending coronary artery
B) Circumflex coronary artery
C) Left main coronary artery
D) Right coronary artery

Question 8

The right atrium receives venous blood from the head and upper extremities via the _____, from the lower body via the _____, and from the heart via the _____.

A) coronary sinus; superior vena cava; inferior vena cava
B) superior vena cava; coronary sinus; inferior vena cava
C) inferior vena cava; superior vena cava; coronary sinus
D) superior vena cava; inferior vena cava; coronary sinus

Question 9

Movement of blood from the left ventricle through the body is called the:

A) systemic circulation.
B) pulmonary circulation.

Question 10

The ________________________ refractory period corresponds with the downslope of the T wave.

Question 11

What are the two phases of the cardiac cycle?

Question 12

Which side of the heart is a high-pressure system that pumps arterial blood to the systemic circulation?

Question 13

The myocardium is subdivided into two areas. The innermost half of the myocardium is called the ______________________ and the outermost half is called the ______________________.

Question 14

Define the term "acute coronary syndromes."

Question 15

Identify the two basic types of cardiac cells in the heart, where they are found, and the function of each.