Skeletal System Worksheet: Fill In The Blanks | MomJunction - Free Printable

To solve the problem, we need to match the correct words from the word bank to complete the sentences about the skeletal system. Let's go through each sentence step by step:

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Word Bank:

- brain
- calcium
- ligament
- tendon
- osteocalcin
- elbow
- bone - marrow
- rigidity
- 206
- cartilage
- joint
- vital organs
- lungs
- heart

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Sentences:

1. There are ______ bones in the human body.
- The human body has a total of 206 bones.
- Correct Answer: 206

2. The skeletal system provides ______ and strength to the body.
- The skeletal system provides rigidity (stability) and strength to the body.
- Correct Answer: rigidity

3. ______ helps in attaching the bone to the muscle.
- Tendons are fibrous connective tissues that attach muscles to bones.
- Correct Answer: tendon

4. The main mineral of the bone is ______.
- Calcium is the primary mineral found in bones, which gives them their hardness and strength.
- Correct Answer: calcium

5. Red and white blood cells are produced in the ______.
- Red and white blood cells are produced in the bone marrow, which is located inside the bones.
- Correct Answer: bone - marrow

6. ______ is present between two bones, which helps provide cushioning and prevents friction.
- Cartilage is a flexible connective tissue that acts as a cushion between bones at joints, reducing friction and providing support.
- Correct Answer: cartilage

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Final Answers:

1. 206
2. rigidity
3. tendon
4. calcium
5. bone - marrow
6. cartilage

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Explanation:

- Sentence 1: The number of bones in the human body is a well-known fact, and it is 206.
- Sentence 2: The skeletal system provides rigidity (stability) along with strength to the body, allowing it to maintain its shape and support movement.
- Sentence 3: Tendons are responsible for attaching muscles to bones, enabling movement.
- Sentence 4: Calcium is the primary mineral in bones, contributing to their hardness and strength.
- Sentence 5: Bone marrow is the tissue inside bones where red and white blood cells are produced.
- Sentence 6: Cartilage acts as a cushion between bones at joints, reducing friction and providing flexibility.

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Final Answer Box:

\boxed{206, rigidity, tendon, calcium, bone - marrow, cartilage}