The heart and circulation

The pointed, inferior portion of the heart, known as the ________ rests on the diaphragm and is oriented towards the left hip.

• base

• mediastinum

• apex

• pericardium

The two superior receiving chambers of the heart are known as the _________

• atria

• ventricles

he valves between the atria and ventricles are known as the ________ valves.

• atrioventricular

• aortic

• semilunar

• pulmonary

Blood leaves the right ventricle through the ___________.

• pulmonary trunk

• aorta

• superior vena cava

• coronary sinus

The term that means heart contraction is ________.

• diastole

• systole

• tachycardia

• fibrillation

The VOLUME of blood pumped out of a ventricle with each heartbeat is known as ________

• Heart Rate

• Stroke Volume

• Cardiac Output

• Cardiac Output

Large blood vessels that carry blood away from the heart are called:

• arteries

• capillaries

• veins

• venae cavae

Tunica _______, the middle layer of a typical blood vessel, contains smooth muscle and elastic fibers.

intima

externa

media

adventitia

SHOW ANSWER

• externa

• media

• adventitia

• intima

9. Arteries are normally depicted as red while veins are colored blue. The exceptions to this rule are the _______ arteries and veins.

• pulmonary

• systemic

• hepatic

• coronary

Pulmonary circulation involves blood flow to and from the heart and the _______.

• digestive organs

• body

• brain

• lungs