Health Worksheet #10 p. 2

Nutrients

substances needed by your body in order to function properly.

Nucleus

the "control center" for all that takes place within a cell.

Cell membrane

the outer layer of a cell.

Nervous

the system that sends and receives messages to and from other body systems.

Circulatory

the system that transports nutrients, water and oxygen to every living cell in the body.

Cytoplasm

the thick fluid inside a cell.

Alveoli

tiny air sacs in your lungs.

Plague

fatty deposits in an artery.

Tissues

formed by groups of similar cells.

Organs

formed by similar tissues.

Systems

made up of organs performing similar tasks.

Atrophic

muscles that are weak or underdeveloped.

Diaphragm

a dome-shaped muscle used in breathing.

Aerobic

a kind of exercise that increases your ability to transport and process oxygen.

Biceps

a muscle located in the front of the upper arm.

Muscle tone

a muscle's ability to maintain a slight contraction.