Circulatory system

Which of the following events produces the first heart sound ?

• Opening of Av valves

• Closing of AV valves

• Opening of Semilunar valves

• Closing of semilunar valves

Second heart sound is heard clearly at which areas of the heart? Mark all that applies.

• Aortic area

• Tricuspid area

• Mitral area

• Pulmonary area

What does the word cardio mean?

• Blood vessels

• Heart

• Artery

• vein

The atrium is ___________ of the heart.

• The upper chambers

• The lower chambers

• The left sides

• The right sides

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

• white blood cells

• plasma

• platelets

• red blood cells

The cells in the blood that help fight germs like bacteria and viruses

• red blood cells

• platelets

• white blood cells

The cells in the blood that help fight germs like bacteria and viruses

• red blood cells

• platelets

• white blood cells

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

The circulatory system works with the ___________ system to provide our body with oxygen.

• respiratory

• digestive

• muscular

Choose the 3 TRUE statements about the circulatory system

• The circulatory system and the respiratory system work together to deliver oxygen to all of the cells and tissues in the body.

• The circulatory system and the respiratory system work together to remove CO₂ and other waste products from cells and tissues in the body.

• The circulatory system, respiratory system, and excretory system all work together to remove waste products from the body.

• The circulatory system is a special system that does not work with other systems of the body.