The Human Circulatory System

What is the largest artery in the human body called?

• Superior Vena Cava
• Aorta
• Inferior Vena Cava
• Pulmonary Artery

The upper chambers of the heart are known as...

• valves

• ventricles

• atria or auricle

• septum

To pump and circulate blood is the work of which organ?

• lungs
• liver
• pancreas
• heart

The lower chambers of the heart are known as...

• valves
• ventricles
• atria
• septum

Blood high in carbon dioxide enters the heart through the superior vena cava into which atria?

• left
• right

Blood leaving the heart to go to the body leaves from which ventricle?

• left
• right

Pulmonary referrs to the lungs, blood leaving the heart through the pulmonary artery is high in which gas?

• nitrogen
• carbon dioxide
• oxygen
• helium

The ___________ is the thick muscular wall that seperates the two sides of the heart.

• atria
• ventricles
• valve
• septum

These cells, in the blood, carry oxygen and give the blood its color.

• white blood cells
• plasma
• platelets
• red blood cells

Tags

NGSS.MS-LS1-2

The smallest type of blood vessel is the:

• nerve
• vein
• capillary
• artery