Circulatory system <3

The 3 main functions of the Circulatory System

• break down food, remove waste, make blood cells

• react to stimuli, grow, adapt

• deliver materials, remove waste, and fight infection

The system that delivers oxygen and gets rid of carbon dioxide.

• skeletal

• respiratory

• lymphatic

• digestive

Small blood vessels that diffuse oxygen, carbon dioxide, and nutrients.

• vein

• capillary

• artery

These blood vessels carry deoxygenated blood to the lungs.

• veins

• arteries

• capillaries

• heart

These blood vessels take oxygenated blood to the body cells.

• veins

• capillaries

• arteries

• pipes

Running is an activity that causes the cells in the muscular system to use oxygen at a faster rate. Which system responds by delivering more oxygen to these cells?

• Circulatory

• Disgestive

• Nervous

• Endocrine

Which gas is transported by the circulatory system in humans and is used by cells during respiration to release energy stored in food?

• carbon dioxide

• nitrogen

• hydrogen

• oxygen

why does artery need thicker wall compared to veins?

• more blood flow into artery

• there is more artery than vein in the body

• artery has to deliver the oxygenated blood

• more fats stored in artery

State the general relationship between exercise and heart rate in humans.

• If a person exercises, then their heart rate will not change

• If a person exercises, then their heart rate will increase

• If a person exercises, then their heart rate will decrease

• Person exercising and heart rate are not related

Identify one way to determine a person's heart rates.

• put a hand on the heart to measure pulse

• put a thumb on the wrist to measure pulse

• put a thumb on the neck to measure pulse

• put two fingers on the wrist to measure pulse