Body Systems Overview worksheet for educational use.

To complete this worksheet, we need to fill in the blanks for each body system with two key pieces of information:
1. What is its role? (What does it do?)
2. What organs/structures are involved? (Which parts of the body make it work?)

Let’s go through each system one by one, using simple language and clear facts.

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Circulatory System
Role: Moves blood around your body to carry oxygen and nutrients.
Organs: Heart, blood vessels (arteries, veins), and blood.

Digestive System
Role: Breaks down food so your body can use it for energy.
Organs: Mouth, esophagus, stomach, intestines, liver, pancreas.

Endocrine System
Role: Makes hormones that control growth, mood, and how your body uses energy.
Organs: Pituitary gland, thyroid, adrenal glands, pancreas, ovaries/testes.

Excretory System
Role: Removes waste from your body, like urine and extra water.
Organs: Kidneys, bladder, ureters, skin (sweat).

Integumentary System
Role: Protects your body from outside harm and helps you feel things.
Organs: Skin, hair, nails.

Lymphatic System
Role: Helps fight infection and drains extra fluid from tissues.
Organs: Lymph nodes, spleen, thymus, lymph vessels.

Muscular System
Role: Lets you move your body and keeps your heart beating.
Organs: Skeletal muscles, smooth muscles (in organs), cardiac muscle (heart).

Nervous System
Role: Controls your thoughts, feelings, and actions — sends messages all over your body.
Organs: Brain, spinal cord, nerves.

Reproductive System
Role: Makes babies possible — creates sperm or eggs.
Organs: Ovaries, uterus, fallopian tubes (female); testes, penis (male).

Respiratory System
Role: Brings oxygen into your body and gets rid of carbon dioxide.
Organs: Nose, trachea, lungs, diaphragm.

Skeletal System
Role: Gives your body shape, protects organs, and lets you move with muscles.
Organs: Bones, joints, cartilage.

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Final Answer:
Here is the completed table:

| Name of Body System | What is its role? | What organs/structures are involved? |
|--------------------------|--------------------------------------------------------|---------------------------------------------------------------|
| Circulatory | Moves blood to deliver oxygen and nutrients | Heart, blood vessels, blood |
| Digestive | Breaks down food for energy | Mouth, esophagus, stomach, intestines, liver, pancreas |
| Endocrine | Makes hormones to control body functions | Pituitary, thyroid, adrenals, pancreas, ovaries/testes |
| Excretory | Removes waste from the body | Kidneys, bladder, ureters, skin |
| Integumentary | Protects body and helps you feel | Skin, hair, nails |
| Lymphatic | Fights infection and removes extra fluid | Lymph nodes, spleen, thymus, lymph vessels |
| Muscular | Allows movement and keeps heart beating | Skeletal, smooth, and cardiac muscles |
| Nervous | Controls thoughts, feelings, and body signals | Brain, spinal cord, nerves |
| Reproductive | Creates babies by making sperm or eggs | Ovaries, uterus, testes, penis |
| Respiratory | Takes in oxygen and removes carbon dioxide | Nose, trachea, lungs, diaphragm |
| Skeletal | Supports body, protects organs, enables movement | Bones, joints, cartilage |