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