OLD SBI3C Chapter 3.9 Circulatory System

The circulatory system is the transport system of the body and has four principal functions:

• • transportation of oxygen and carbon dioxide

• • distribution of nutrients and transport of wastes

• • maintenance of body temperature

• • circulation of hormones

• All of these are principal functions of the circulatory system.

Which of the following statement about the "Structure of the Circulatory System" is INCORRECT.

• A circulatory system consists of three general components: blood, blood vessels and the heart.

• The blood is basically a fluid that is responsible for the transportation of materials around the body and plays a major role in the regulation of body temperature

• The heart is essential a a pump heart, that pushes the fluid through the blood vessels or spaces.

• The blood vessels are essentially tubes that carry the fluid to all parts of the body.

• None of the other 4 statements are INCORRECT.

The _________ and ____________________ are commonly known as the cardiovascular system

• heart, blood vessels

• heart, blood

• blood, blood vessels

T/F - No body cell is farther than two cells away from a blood vessel that can carry nutrients.

• True

• False

T/F - During an average lifetime, the heart pumps enough blood to fill two large ocean tankers .

• True

• False

Which of the following statements about "circulatory system" is INCORRECT.

• Every minute, 5 L of blood cycles from the heart to the lungs, picks up oxygen, and returns to the heart.

• The heart pumps the oxygen-rich blood and nutrients to the tissues of the body.

• The circulatory system plays a central role in providing the oxygen that the body's cells require.

• Oxygen is used to produce energy for a variety of processes including building new materials, such as proteins, and repairing tissues.

• None of the other 4 statements are INCORRECT

The system of blood vessels that carries deoxygenated blood to the lungs and oxygenated blood back to the heart is called the

• pulmonary circuit

• systemic circuit

The system of blood vessels that carries deoxygenated blood to the lungs and oxygenated blood back to the heart is on the

• right side of the heart

• left side of the heart

The system of blood vessels that carries oxygenated blood to the tissues of the body and deoxygenated blood back to the heart.

• pulmonary circuit

• systemic circuit

Which of the following statements about "the structure of the heart" is INCORRECT.

• The mammalian heart consists of a double pump separated by a wall of muscle called the septum.

• The pump on the right powers the pulmonary circuit, and the pump on the left powers the systemic-circuit.

• Each pump consists of a thin-walled atrium (plural: atria) and a thick-walled ventricle.

• When the heart muscles contract, the valves of the heart prevent blood from flowing back into the ventricles

• None of the other 4 statements are INCORRECT.