The human skeleton exercise - Free Printable

Let's solve each part of this worksheet step by step and explain the answers.

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1. Write down the Word that describes each of the following:

- A frame made of bone that supports our body.
→ Skeleton
*Explanation:* The skeleton is the internal framework of the body made of bones that provides support, shape, and protection.

- A bone in the spine.
→ Vertebra
*Explanation:* The spine (or vertebral column) is made up of individual bones called vertebrae.

- The bones of the head.
→ Skull
*Explanation:* The skull is the bony structure that forms the head and protects the brain.

- Animals with no skeleton.
→ Invertebrates
*Explanation:* Invertebrates are animals without a backbone or internal skeleton (e.g., insects, jellyfish, worms).

- The parts of the body that allow our bones to move.
→ Joints
*Explanation:* Joints are the connections between bones that allow movement (e.g., hinge joints in elbows, ball-and-socket joints in shoulders).

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2. Write down the name of one:

- A flat bone
→ Scapula (shoulder blade) or Pelvis or Cranium
*Example:* Scapula
*Explanation:* Flat bones are thin, flattened bones that protect internal organs and provide surface area for muscle attachment.

- Long bone
→ Femur (thigh bone)
*Explanation:* Long bones are longer than they are wide, typically found in limbs (e.g., femur, humerus).

- Short bone
→ Carpal bones (in the wrist)
*Explanation:* Short bones are cube-shaped and mostly found in the wrists and ankles.

- Irregular bone
→ Vertebra
*Explanation:* Irregular bones have complex shapes that don’t fit into other categories (e.g., vertebrae, hip bones).

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3. Functions: Join with arrows the pictures to their functions

We have four images:
1. Ribs
2. Skull
3. Spine
4. Hip Bone

And four functions:
- Supports the weight of the body.
- Protects our heart and lungs.
- Protects the spinal cord.
- Protects our brain.

Now match them:

- RIBS → Protects our heart and lungs.
*Explanation:* The ribcage surrounds and protects the heart and lungs.

- SKULL → Protects our brain.
*Explanation:* The skull encloses and protects the brain.

- SPINE → Protects the spinal cord.
*Explanation:* The vertebrae surround and protect the spinal cord.

- HIP BONE → Supports the weight of the body.
*Explanation:* The hip bones (pelvis) connect the spine to the legs and bear the body’s weight when standing or walking.

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✔ Final Answers:

#### 1. Definitions:
- A frame made of bone that supports our body. → Skeleton
- A bone in the spine. → Vertebra
- The bones of the head. → Skull
- Animals with no skeleton. → Invertebrates
- The parts of the body that allow our bones to move. → Joints

#### 2. Examples of Bones:
- A flat bone → Scapula (or Pelvis, Cranial bone)
- Long bone → Femur
- Short bone → Carpal bone
- Irregular bone → Vertebra

#### 3. Matching Functions:
- Ribs → Protects our heart and lungs.
- Skull → Protects our brain.
- Spine → Protects the spinal cord.
- Hip Bone → Supports the weight of the body.

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This worksheet teaches basic human anatomy vocabulary and functions of the skeletal system. It's great for ESL learners to build science vocabulary in English!