Brain cell
brain
Oxygen
A human brain is made up of billions of cells.
Every cell in the brain needs oxygen to stay alive and function.
A
It makes its own oxygen.
B
It takes oxygen from the air.
C
It takes oxygen from the lungs.
D
It takes oxygen from the blood.
Brain cell
brain
Oxygen
A human brain is made up of billions of cells.
Every cell in the brain needs oxygen to stay alive and function.
A
The lungs absorb oxygen from air we breathe in.
B
The circulatory system carries oxygen from air in the lungs to all cells in the body.
C
Oxygen is made by cellular respiration.
D
Oxygen from air diffuses through the body to all of its cells.
Brain cell
brain
Food
A human brain is made up of billions of cells.
Every cell in the brain needs glucose from food to stay alive and function.
A
It takes glucose from food in the mouth.
B
It takes glucose from the stomach and intestines.
C
It takes glucose from the blood.
D
It makes its own glucose.
Brain cell
brain
Oxygen
A human brain is made up of billions of cells.
Every cell in the brain needs oxygen to stay alive and function.
A
Glucose is made by cellular respiration.
B
The digestive system absorbs glucose from digested food.
C
The circulatory system carries glucose from digested food to all cells in the body.
D
Glucose from digested food diffuses through the body to all of its cells.