The Human Body(HB Chapter 1)Test Review

Directs the cell’s activities and holds information that controls a cell’s function.

nucleus

Made of clear, jellylike substance that contains many cell structures.

cytoplasm

Three things that work together to make your body move.

•muscles• bones• nerves

Three stages of digestion of food.

• breakdown• absorption• elimination of wastes

System that breaks down food so the body can use it.

•digestive system

System that transports oxygen.

• circulatory system

System that breaks down food so the body can use it.

•digestive system

Covers the surface of your body, inside and out.

epithelial tissue

Carries electrical messages back and forth between the brain and other parts of the body.

nervous tissue

Group of organs that work together carrying out major functions.

organ system

Group of similar cells that perform the same function.

tissue

Perform more complex jobs than tissues.

•organs

To bend a joint, one muscle does this while another muscle returns to its original length.

• contracts

Basic unit of structure and function in a living thing.

cell

A structure that is made up of different kinds of tissue(ex. brain).

organ

Provides support for your body and connects all its parts (ex. fat).

connective tissue

Forms the outside border of a cell.

cell membrane

Body tissue that contracts, or shortens, making body parts move.

muscle tissue

Inner framework that includes all the bones in your body.

skeleton

Attached to the bones of your skeleton and provide the force that moves your bones.

skeletal muscles

Place in the body where two bones come together.

joint

Substance that you get from food and that your body needs to carry out processes, such as contracting muscles.

nutrient

Process where nutrients move from the digestive system into the bloodstream.

absorption

Organs that release chemical signals directly into the bloodstream.

glands

A signal in the environment that makes you react.

stimulus

What your body does in reaction to a stimulus.

response

Chemical signals released by the endocrine system and affect growth and development.

hormones

The condition in which an organism’s internal environment is kept stable in spite of changes in the outside environment.

homeostasis

Disrupts homeostasis.

• long-term stress

The reaction of your body to possible threatening, challenging, or uncomfortable events.

stress

GOOD LUCK!!!