11.03 - Heart Part 1: Crash Course

What is the primary function of the heart?

• To filter waste

• To control emotions

• To produce hormones

• To maintain pressure

How does the heart move blood throughout the body?

• By maintaining a pressure gradient

• By filtering impurities

• By heating the blood

• By creating a vacuum

What is the average size of an adult human heart?

• The size of a kidney

• The size of a football

• The size of two fists clasped together

• The size of a fist

Where is the heart located in the body?

• On the left side of the chest

• In the center of the chest

• On the right side of the chest

• Below the diaphragm

What are the two main loops of circulation in the body?

• The arterial and venous loops

• The left and right loops

• The systemic and pulmonary loops

• The superior and inferior loops

What color is blood inside the body?

• Green

• Red

• Transparent

• Blue

What is the role of the atria in the heart?

• To pump blood out of the heart

• To filter the blood

• To receive blood returning to the heart

• To close the heart valves

What is the difference between arteries and veins?

• Arteries carry oxygen-rich blood, veins carry oxygen-poor blood

• There is no difference

• Arteries carry blood away from the heart, veins carry blood toward the heart

• Arteries are only found in the lungs, veins are found throughout the body

What causes the 'lub-DUB' sound of the heart?

• The heart muscles relaxing

• The opening and closing of heart valves

• The flow of blood into the heart

• The heartbeat speeding up

What are systolic and diastolic blood pressure?

• The pressure inside and outside the heart

• The pressure when the heart contracts and relaxes

• The pressure in the arteries and veins

• The pressure during exercise and rest

Tags

NGSS.HS-LS1-3