Exploring the Heart: Worksheet 3.13

What is the primary function of the heart?

• To pump blood around the body

• To digest food

• To filter waste

• To produce hormones

The right side of the heart pumps blood to the _________.

• lungs

• brain

• stomach

• liver

Which part of the heart pumps blood to the lungs?

• Left Atrium

• Right Atrium

• Left Ventricle

• Right Ventricle

Fill in the blank: The _______ pumps oxygenated blood to the body.

• A) Left Atrium

• B) Right Atrium

• C) Left Ventricle

• D) Right Ventricle

Which part of the heart receives blood from the body?

• Left Atrium

• Right Atrium

• Left Ventricle

• Right Ventricle

Which part of the heart receives blood from the lungs?

• Left Atrium

• Right Atrium

• Left Ventricle

• Right Ventricle

The left ventricle has a thicker wall than the right ventricle because it needs to pump blood to the entire body.

• True

• False

What stage of the cardiac cycle is shown by the arrows in the diagram of the human heart?

• Systole

• Diastole

• Atrial contraction

• Ventricular filling

The diagram shows a section through a fish heart. How is the structure of the fish heart different from the human heart? Fill in the blank: The fish heart has ______ chambers.

• 2

• 3

• 4

• 5