Practice worksheet for identifying human body systems and their functions.

Let’s go step by step to fill in the table correctly.

We have 6 diagrams, each showing a different human body system. We need to identify:

1. The Body System name
2. Its main Function
3. The Main Organ(s) involved

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Diagram 1 (Skeleton):
→ Shows bones and joints → This is the Skeletal System
→ Function: Supports the body, protects organs, helps with movement
→ Main organs: Bones, joints, cartilage

Diagram 2 (Brain + Spinal Cord + Nerves):
→ Shows brain, spinal cord, nerves → This is the Nervous System
→ Function: Controls body activities, sends signals, processes information
→ Main organs: Brain, spinal cord, nerves

Diagram 3 (Heart + Blood Vessels):
→ Shows heart and blood vessels → This is the Circulatory System (also called Cardiovascular)
→ Function: Transports blood, oxygen, nutrients, waste around the body
→ Main organs: Heart, blood vessels (arteries, veins), blood

Diagram 4 (Lungs + Trachea):
→ Shows lungs and airways → This is the Respiratory System
→ Function: Takes in oxygen, removes carbon dioxide
→ Main organs: Lungs, trachea, bronchi

Diagram 5 (Stomach, Intestines, Liver, etc.):
→ Shows digestive tract and related organs → This is the Digestive System
→ Function: Breaks down food, absorbs nutrients, removes waste
→ Main organs: Stomach, intestines, liver, pancreas, esophagus

Diagram 6 (Muscles all over body):
→ Shows muscles attached to bones → This is the Muscular System
→ Function: Allows movement, maintains posture, generates heat
→ Main organs: Skeletal muscles (like biceps, quadriceps), tendons

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Now let’s organize this into the table format as requested.

Final Answer:

| Diagram | Body system | Function | Main organ involved |
|---------|---------------------|-----------------------------------------------|------------------------------------------|
| 1 | Skeletal System | Supports body, protects organs, enables movement | Bones, joints, cartilage |
| 2 | Nervous System | Controls body, sends signals, processes info | Brain, spinal cord, nerves |
| 3 | Circulatory System | Transports blood, oxygen, nutrients, waste | Heart, blood vessels, blood |
| 4 | Respiratory System | Takes in oxygen, removes carbon dioxide | Lungs, trachea |
| 5 | Digestive System | Breaks down food, absorbs nutrients | Stomach, intestines, liver |
| 6 | Muscular System | Enables movement, maintains posture | Skeletal muscles, tendons |