The Heart - Part 1

What is the primary concern of the heart?

• To generate emotions

• To maintain pressure

• To filter blood

• To produce hormones

What is the average weight of an adult human heart?

• 400 to 450 grams

• 250 to 350 grams

• 500 to 550 grams

• 100 to 150 grams

Where is the heart located in the body?

• In the lower abdomen

• To the left of the chest

• Directly in the center of the chest

• To the right of the chest

How does the heart protect itself from friction?

• Using electrical impulses

• With a fluid-filled sac called the pericardium

• Through a thick layer of muscle

• By producing white blood cells

What do the heart's atria do?

• Pump blood out of the heart

• Receive blood returning to the heart

• Filter the blood

• Produce blood cells

What is the function of the ventricles?

• To filter blood

• To receive blood from the body

• To store blood

• To pump blood out of the heart

Which valve prevents blood from flowing back into the left ventricle?

• Aortic valve

• Tricuspid valve

• Pulmonary valve

• Mitral valve

What is the purpose of the pulmonary circulation loop?

• To circulate blood through the liver

• To supply blood to the heart itself

• To exchange carbon dioxide for oxygen in the lungs

• To deliver oxygen to the brain

What does systolic blood pressure represent?

• The pressure in the veins

• The pressure during diastole

• The pressure when the heart is at rest

• The peak pressure during ventricular contraction

What could a low systolic blood pressure indicate?

• Blocked arteries

• High stress levels

• Excessive exercise

• Dehydration or blood loss

Tags

NGSS.HS-LS1-3