1. Circulatory System
STRUCTURES
Blood
Heart
Arteries
Capillaries
Veins
FUNCTION
Pumps blood to and from the heart to supply oxygen to the body.
How does this system relate to others?
Connected to almost all other systems. Works very closely with the respiratory system and the immune system.

2. How does this system relate to others?
Endocrine System
FUNCTION
Collection of glands that secrete hormones into the blood which regulate growth, development, and homeostasis.
STRUCTURES
Hypothalamus
Pituitary gland
Thyroid
Adrenal glands
Ovaries
Testes
How does this system relate to others?
The endocrine system works closely with the reproductive system, the digestive system and the excretory system. Several hormones originate in the brain, part of the nervous system.

3. How does this system relate to others?
Immune System
How does this system relate to others?
The immune system works closely with the circulatory system and the integumentary system.
FUNCTION
Protects the body from pathogens.
STRUCTURES
Thymus
Spleen
Lymph nodes
Lymph vessels
White blood cells

4. How does this system relate to others?
Integumentary System
FUNCTION
Protects the body from infection and injury, regulates body temperature.
STRUCTURES
Hair
Skin
Nails
Sweat glands
Oil glands
How does this system relate to others?
The integumentary contains blood vessels (circulatory system) and nerves (nervous system) and works closely with the immune system (helping keep pathogens out) and the excretory system (excreting waste via sweat).

5. Skeletal System
FUNCTION
The hard structure that provides a frame for the body of an animal.
STRUCTURES
Bones
Cartilages
How does this system relate to others?
Muscular system – bones and muscles work together for movement
Circulatory system and immune system – all blood cells (red and white) are made in the bone marrow

6. How does this system relate to others?
Nervous System
How does this system relate to others?
The nervous system works with many other systems, but works most closely with the:
Digestive system and
Muscular system to coordinate movement
FUNCTION
The body's speedy, electrochemical communication system, consisting of all the nerve cells of the peripheral and central nervous systems.
STRUCTURES
Brain
Nerves
Spinal cord

7. Muscular System Works closely with the:
FUNCTION
Creates movement, regulates body temperature and protects the body.
STRUCTURES
Muscles
Tendons
How does this system relate to others?
Works closely with the:
Skeletal system – Supports the muscle
Circulatory – brings O2 to muscles and waste products such as lactic acid away
Nervous – how muscles contract

8. How does this system relate to others?
Digestive System
How does this system relate to others?
Muscular – contains smooth muscle
Nervous – gets signals that control the rate of digestion
Circulatory – broken down food travels through blood vessels to cells
Endocrine – hormones (ex. Insulin) control blood sugar levels
FUNCTION
Breaks down food and delivers the products to the blood for dispersal to the body cells.
Gallbladder
Pancreas
Small intestine
Large intestine (colon)
Rectum
STRUCTURES
Oral cavity
Esophagus
Stomach
Liver

9. How does this system relate to others?
Excretory System
How does this system relate to others?
Circulatory – waste products are carried from the cells to the kidney through blood vessels
Endocrine – hormones are sent that control water levels and homeostasis
Respiratory – expels toxic CO2 out of body
FUNCTION
Removes wastes from the body and helps to maintain water and electrolyte balance.
Kidneys
Ureters
Bladder
Urethra
Lungs
Skin
Liver
STRUCTURES

10. How does this system relate to others?
Reproductive System
How does this system relate to others?
FUNCTION
Organ system which functions in creating offspring and producing sex hormones.
The reproductive system works most closely with the endocrine system (hormones)
Females:
Ovaries
Uterus
Vagina
STRUCTURES
Males:
Penis
Testes

11. How does this system relate to others? Responsible for gas exchange.
Respiratory System
How does this system relate to others?
Circulatory – brings O2 to the cells and CO2 back to the lungs
Excretory – part of the excretory system to get rid of toxic CO2 from the body
FUNCTION
Responsible for gas exchange. 
Lungs
Pharynx
Larynx
Bronchi
Diaphragm
Trachea
STRUCTURES

12. Find your next system using the following clue:
Circulatory System
Find your next system using the following clue:
This system controls the hormones in your body.

13. Find your next system using the following clue:
Endocrine System
Find your next system using the following clue:
This system helps your body fight infection.

14. Find your next system using the following clue:
Immune System
Find your next system using the following clue:
This system covers your entire body.

15. Find your next system using the following clue:
Integumentary System
Find your next system using the following clue:
This system gives your body support and protects some internal organs.

16. Find your next system using the following clue:
Skeletal System
Find your next system using the following clue:
This system is responsible for the controlling the body.

17. Find your next system using the following clue:
Nervous System
Find your next system using the following clue:
This system helps the body move and is attached to bones.

18. Find your next system using the following clue:
Muscular System
Find your next system using the following clue:
This system breaks down food and aids in the absorption of nutrients.

19. Find your next system using the following clue:
Digestive System
Find your next system using the following clue:
This system is responsible for the elimination of wastes produced by homeostasis.

20. Find your next system using the following clue:
Excretory System
Find your next system using the following clue:
This system is responsible for the continuation of generations of people.

21. Find your next system using the following clue:
Reproductive System
Find your next system using the following clue:
This system is responsible for respiration and providing oxygen to your blood.

22. Find your next system using the following clue:
Respiratory System
Find your next system using the following clue:
This system is responsible for blood flow.