Cardiovascular System Flashcard Review

Front

What are the components included in the Cardiovascular System?

Back

Heart, Blood Vessels (Arteries, Veins, & Capillaries), & Blood

Front

What is the function of the Cardiovascular System?

Back

Transportation of various substances throughout the body such as oxygen & CO2, nutrients & wastes, hormones, etc.

Front

Where is the heart located?

Back

Between the lungs in the thoracic cavity. Within the inferior mediastinum, the middle cavity of the thorax.

Front

What is the base of the heart?

Back

The superior end that points towards the right shoulder.

Front

About how big is the heart?

Back

Approximately the size of a closed fist.

Front

What is the pericardium?

Back

A serous membrane that surrounds the heart, also called the pericardial sac. Secretes serous fluid to reduce friction.

Front

List the 3 layers of the heart wall.

Back

Epicardium or visceral pericardium; Myocardium is the thick muscular layer; Endocardium lines heart chambers.

Front

Describe the myocardium.

Back

Thick bundles of cardiac muscle that are twisted into ring-like arrangements. This is the layer of the heart wall that actually contracts. Myocardium is cardiac muscle.

Front

What is coronary circulation?

Back

Blood supply to the myocardium itself is provided by coronary arteries. The main (right and left) coronary arteries branch from the aorta.

Front

What are the four chambers of the heart?

Back

Right Atrium

Right Ventricle

Left Atrium

Left Ventricle