Unit 9 Respiratory and Circulatory System

The system responsible for transport of materials through the body is the __________ system.

• excretory

• digestive

• circulatory

• respiratory

The circuit that carries deoxygenated blood to receive oxygen is called the ___________ circuit.

• renal

• pulmonary

• coronary

• systemic

These are the smallest blood vessels and they allow exchange of gases & materials via diffusion.

• veins

• arteries

• vena cava

• capillaries

The vessel that returns deoxygenated blood to the heart from below the heart is called the __________.

• inferior vena cava

• superior vena cava

• pulmonary vein

• aorta

Veins have __________ which stop the back flow of blood.

• extra muscle

• more elastic tissue

• platelets

• valves

Which of the following contains hemoglobin?

• platelets

• red blood cells

• white blood cells

• plasma

The flow of blood from the heart to the body is called _______.

• pulmonary circulation

• atrial circulation

• systemic circulation

• ventricular circulation

What vessel returns deoxygenated blood to the heart from the head and arms?

• superior vena cava

• aorta

• inferior vena cava

• pulmonary vein

Which heart chamber is responsible for pumping oxygenated blood to the entire body?

• right atrium

• left atrium

• right ventricle

• left ventricle

Which type of blood vessel carries blood away from the heart?

• vein

• artery

• capillary

• venule