Body Systems
The smallest working part of a living thing is a(n)?
Cell.
Your Skeletal System is made up of?
Bones.
All your bones form which system?
Skeletal System.
Used by the body to grow, to rebuild, and to repair cells?
Protein.
Adjusts the size of the pupil?
Iris.
A group of the same kind of cells that work together is a(n)?
Tissue.
Your Muscular System is made up of?
Muscles.
(To the nearest 100) you have this many bones in your body.
200.
Helps your body's chemical processes?
Minerals.
Allows different amounts of light to enter the eye?
Pupil.
A group of different kinds of tissues that work together is a(n)?
Organ.
This system controls all your other body systems?
Nervous System.
These at your knees, elbows, wrists, hips, and neck help your body move in different ways.
Joints.
Nutrients that help your body use carbohydrates, fats, and proteins?
Vitamins.
Focuses light rays on the Retina?
Lens.
A group of organs that work together to do a certain job is a(n)?
Body System.
This system changes food into substances that your body can use?
Digestive System.
The name of the bone in your upper arm (it's not funny)?
Humerus.
Sugar or starch?
Carbohydrates.
Changes light into nerve signals and sends them to the Optic Nerve?
Retina.
Protects other body systems from germs?
Skin.
This system that moves oxygen and other substances to all body cells?
Circulatory System.
Some bones make this in bone marrow?
Blood Cells.
Nutrient that provides energy and gives food flavor?
Fat.
Sends signals to the brain?
Optic Nerve.