The cranium protects the brain.
1. false
2. true
The cranium protects the brain.
The heart beats around 35 million times per year.
1. false
2. true
The heart beats about 35 million times per year.
In which system of the human body do we find the enzymes that help process nutrients from food?
1. digestive system
2. muscles
3. nervous system
4. bones
In the digestive system, the liver creates different enzymes to help treat the food nutrients which are picked up in the small intestine.
There are the same number of nerve cells in the brain as there are stars in the Milky Way.
1. true
2. false
There are MORE nerve cells in the brain than stars in the Milky Way.
What helps to maintain good posture?
1. nervous system
2. circulatory system
3. quadriceps
4. skeletal muscles
Skeletal muscles work nonstop, without one even noticing, to control posture (position of the body)
Where is bone marrow found?
1. heart
2. nervous system
3. bones
4. muscles
There is a cavity in the long bones of the body which is filled with a substance called bone marrow.
What can a muscle be compared to?
1. concrete
2. a tree branch
3. elastic tissue
4. a string
Muscles are all made of the same material, a type of elastic tissue (similar to a rubber band).
Our heart muscle is about the same size as...
1. a closed fist
2. our head
3. a $2 coin
4. a blueberry
The heart is about the size of a closed fist.
Which statement is true?
1. The brain has no effect on either side of the body.
2. The left side of the brain controls the right side of the body.
3. Both parts of the brain control both parts of the body at the same time.
4. The left side of the brain controls the left side of the body.
The left side of the brain controls the right side of the body and the right side of the brain controls the left side of the body.
How many bones are in the human body?
1. 192
2. 206
3. 600
4. 210
The human skeleton contains 206 bones.
Food needs about 2 to 3 hours to travel through the entire digestive system.
1. true
2. false
Food needs one or two days to get through the entire digestive system.
What is the first step of digestion?
1. Creation of enzymes
2. Blood circulation
3. Absorption of nutrients
4. The decomposition of food by saliva