Quick Write

1. List three organ systems and describe their function.

2. How does their function help maintain homeostasis?

Body Systems

11 Organ Systems

Nervous Integumentary Skeletal Muscular Circulatory

System System System System System

Top(from left to

right)- Respiratory

System- Digestive

System- Excretory

System

Bottom(from left to

right)- Endocrine

System- Reproductive

System- Immune

System

Nervous System Central Nervous System

(CNS) Brain Spinal Cord

Peripheral Nervous System (PNS)

All other nerves Functions?1. Recognizes and

responds to stimulus

Integumentary System

Skin, hair, nails, etc. Functions? Protective barrier

1. Environment

2. Sunlight

Skeletal System

Bones, cartilage, etc. Functions?

1. Structure

2. Support

3. Protection

4. Movement

5. Makes blood and Stores fat

Muscular System

Muscles Functions?

1. Movement

2. Circulates Blood

3. Helps with Digestion

Circulatory System

Heart, blood vessels

Functions?

1. Supplies cells with oxygen and nutrients

2. Removes waste(CO2)

Respiratory System

Nose, trachea, lungs, etc.

Functions?

1. Provides oxygen

2. Removes carbon dioxide

Digestive System Mouth, stomach,

intestines, etc. Accessory Organs

Liver, Pancreas, Gall Bladder

Functions?1. Converts food into

nutrients the cells can use

2. Eliminates waste

Excretory System

Kidneys, bladder, urethra, etc.

Functions?

1. Eliminates waste

2. Maintains Blood Pressure

Endocrine System

Pituitary gland, adrenals, pancreas, etc.

Functions?

1. Growth

2. Development

3. Metabolism

Reproductive System

Male Urethra, testes, etc.

Female Ovary, uterus, etc.

Functions?

1. Produce reproductive cells

2. Nurture and protect developing embryo (females only)

Immune System

White blood cells, lymph nodes, etc.

Functions?

1. Protect from infection

2. Helps balance fluids