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20 questions
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- Multiple ChoicePlease save your changes before editing any questions.
The __________ system carries oxygen and nutrients to all parts of our bodies.
respiratory
circulatory
- Multiple ChoicePlease save your changes before editing any questions.
What does the circulatory system help our blood carry away from our body?
oxygen
hydrogen
carbon dioxide
helium
- Multiple ChoicePlease save your changes before editing any questions.
What is the main organ of our circulatory system?
heart
lungs
skin
liver
- Multiple ChoicePlease save your changes before editing any questions.
In what part of the body are red blood cells made?
arteries
veins
bone marrow
heart
- Multiple ChoicePlease save your changes before editing any questions.
The heart is about the size of your ________.
foot
brain
ear
fist
- Multiple ChoicePlease save your changes before editing any questions.
How many chambers does the heart have?
1
2
3
4
- Multiple ChoicePlease save your changes before editing any questions.
What makes the heartbeat sound we hear?
ventricles squeezing blood.
circulating blood
valves opening and closing
heart muscle contracting
- Multiple ChoicePlease save your changes before editing any questions.
What do we call the movement of
blood through the heart and around the body?
circulation
transportation
digestion
breathing
- Multiple ChoicePlease save your changes before editing any questions.
What do we call the tiny tubes that carry blood away from the heart?
valves
arteries
atria
bones
- Multiple ChoicePlease save your changes before editing any questions.
What do we call the tiny tubes that return oxygen
poor blood back to the heart?
arteries
chambers
veins
ventricles
- Multiple ChoicePlease save your changes before editing any questions.
What do we call the smallest blood vessels in our bodies?
atoms
capillaries
tissues
cells
- Multiple ChoicePlease save your changes before editing any questions.
The yellowish fluid that is in the blood that contains nutrients is called __________.
plasma
white blood cells
red blood cells
platelets
- Multiple ChoicePlease save your changes before editing any questions.
The part of the blood that helps you stop bleeding when you cut yourself is called __________.
red blood cells
platelets
plasma
white blood cells
- Multiple ChoicePlease save your changes before editing any questions.
The part of the blood that carries oxygen is called ________.
red blood cells
white blood cells
platelets
plasma
- Multiple ChoicePlease save your changes before editing any questions.
The part of the blood that fights off harmful bacteria and viruses is called ________.
red blood cells
white blood cells
platelets
plasma
- Multiple ChoicePlease save your changes before editing any questions.
The large artery that brings blood from the heart to the lungs is called the ___________.
vein
ventricle
pulmonary artery
capillary
- Multiple ChoicePlease save your changes before editing any questions.
When we breathe in, our bodies use _________ to live.
carbon monoxide
carbon dioxide
nitrogen
oxygen
- Multiple ChoicePlease save your changes before editing any questions.
We breathe out ________ when we exhale.
carbon monoxide
carbon dioxide
helium
oxygen
- Multiple ChoicePlease save your changes before editing any questions.
The main organ of the respiratory system is the _______.
lungs
heart
liver
arteries and veins
- Multiple ChoicePlease save your changes before editing any questions.
Your lungs have tiny air sacs called _______.
aorta
arteries
ventricles
alveoli