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Body Systems and Integumentary System
Study Guide: Test: Monday May 3, 2010
**Please study your homework: DRW’s, review questions, and VOCABULARY. A lot of what is on the
test are contained in these materials.**
Homeostasis: the maintenance of a stable internal environment.
Tissue: a group of similar cells working together.
Tissue
Function
Epithelial Tissue
Covers and protects underlying tissue.
Nervous Tissue
Sends electrical signals through the body.
Muscle Tissue
Made of cells that can contract and relax to
produce movement.
Connective Tissue
Joins, supports, protects, insulates, nourishes, and
cushions organs. Also keeps them from falling
apart.
Organ: two or more tissues working together.
Remember: The body is organized into cells, tissues, organs, and organ systems.

Cells make up tissue; two or more tissues make up an organ, organs work together to form an
organ system.

Your body has ELEVEN major systems that carry out functions in your body:
ORGAN SYSTEM
FUNCTIONS
Integumentary System
SKIN, HAIR, and NAILS protect underlying tissue.
Muscular System
Skeletal muscles move your bones.
Skeletal System
Bones provide a frame to support and protect
your body parts.
Cardiovascular System
Heart pumps blood through all your blood vessels.
Nervous System
Receive and send electrical messages throughout
the body.
Lymphatic System
Returns leaked fluids to blood vessels and gets rid
of germs.
Digestive System
Breaks down food you eat into nutrients that can
be absorbed.
Endocrine System
Glands regulate body functions by sending out
chemical messengers.
Respiratory System
Lungs absorb oxygen and release carbon dioxide.
Urinary System
Removes wastes from the blood and regulates the
body’s fluids.
Reproductive System (MALE)
Produces and delivers sperm.
Reproductive System (FEMALE)
Produces eggs and nourishes and shelters the
unborn baby.
**Integumentary System: Your hair, skin, and nails. Integumentary= COVERING

Your hair and nails do NOT contain nerves, but the hair follicle and nail root do contain nerves.
This is why it does not hurt when you cut your hair/nails.
Sweat Glands: small organs in your skin that produce sweat.

Pimples form by an infection in your skin—caused by hair follicles clogged with oil, dead skin
cells, and bacteria.
** Melanin: a darkening chemical in your skin that determines skin color.

Skin varies from person to person because of the different amounts of melanin in the skin.
Epidermis: the outermost layer of the skin.
Dermis: the deeper, thicker layer of the skin.
Hair Follicle: a small organ in the dermis layer of the skin that produces hair.
**KNOW the diagram of SKIN and where each structure is located:

epidermis, dermis, hair follicle, oil gland, blood vessel