When you exercise, what gas does your body need more of?

• Blood

• Carbon dioxide

• Hydrogen

• Oxygen

Tags

NGSS.HS-LS1-7

How does the body respond when more oxygen is required?

• Decreasing heart rate

• Increasing heart rate

• Decreasing blood pressure

• Increasing blood pressure

Tags

NGSS.HS-LS1-3

What is the average resting heart rate?

• 20-40

• 60-80

• 100-120

• 140-160

Tags

NGSS.HS-LS1-3

What is the maximum heart rate for a young adult?

• ~180

• ~200

• ~220

• ~240

What happens to arteries in your legs when you run?

• Contract

• Stay the same

• Expand

• Shrink

What happens to arteries in the stomach when you exercise?

• Expand

• Contract

• Dilate

• Stay the same

The pumping heart makes the sound we refer to as the _____

• Lub dub

• Pulse

• Blood Pressure

• Heart Beat

Where does the 'lub dub of a heart beat come from?

• The sound of blood being pushed against the aorta

• The sound of blood being pushed against arteries

• The sound of blood being pushed against closed, one-way valves

• The sound of blood being pushed against veins

What causes the 'lub' sound of our heart beat?

• The closing of the pulmonary and aortic valve as the ventricles contract

• The closing of the tricuspid and bicuspid valve as the ventricles contract

• The closing of the pulmonary and aortic valves when the pressure in the ventricles is lower than in the arteries

• The closing of the pulmonary and aortic valves when the pressure in the arteries is lower than in the ventricles

What causes the 'dub' sound of our heart beat?

• The closing of the pulmonary and aortic valve as the ventricles contract

• The closing of the tricuspid and bicuspid valve as the ventricles contract

• The closing of the pulmonary and aortic valves when the pressure in the ventricles is lower than in the arteries

• The closing of the pulmonary and aortic valves when the pressure in the arteries is lower than in the ventricles