Engaging Skeletal System Worksheets for Class 5 Students - Free Printable

Let's solve each part of this Skeletal System worksheet step by step and provide clear explanations.

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1. Fill in the blanks

a. The skeletal system is made up of _______.
✔ Answer: *Bones*
Explanation: The skeletal system consists of bones that support the body, protect internal organs, and allow movement.

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b. Rib cage protects our ______ and ______.
✔ Answer: *Heart* and *Lungs*
Explanation: The rib cage (made of ribs and sternum) surrounds and protects vital organs in the chest cavity — primarily the heart and lungs.

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c. The muscle where two or more ______ meet is called a joint.
✔ Answer: *Bones*
Explanation: A joint is the place where two or more bones connect. For example, the knee joint connects the femur and tibia.

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d. Muscle of the stomach are an example of ______ muscles.
✔ Answer: *Smooth*
Explanation: The stomach has smooth muscles, which are involuntary muscles found in internal organs like the digestive tract. They contract automatically to help move food.

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2. Tick (√) the correct word

a. The skull have (22 / 28) different bones.
✔ Answer: *22*
Explanation: The human skull is made up of 22 bones, including 8 cranial bones and 14 facial bones.

> Note: "Have" should be "has" grammatically, but since it's a multiple-choice format, we focus on content.

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b. Femur is the (longest / smallest) bone in our body.
✔ Answer: *Longest*
Explanation: The femur (thigh bone) is the longest bone in the human body.

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c. (Enamel / girdle) is the hardest substance in our body.
✔ Answer: *Enamel*
Explanation: Tooth enamel is the hardest substance in the human body. It covers the outer surface of teeth and helps resist wear.

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d. Lower leg has two bones called fibula and (tibula / tibia).
✔ Answer: *Tibia*
Explanation: The lower leg has two bones: the tibia (larger, weight-bearing bone) and the fibula (smaller, thinner bone).

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3. Define

a. Bone marrow
✔ Definition: Bone marrow is a soft, spongy tissue found inside certain bones (like hip bones and vertebrae). It produces blood cells — red blood cells, white blood cells, and platelets.

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b. Ligaments
✔ Definition: Ligaments are strong bands of connective tissue that connect bone to bone at joints. They stabilize and support joints and prevent excessive movement.

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c. Tendons
✔ Definition: Tendons are tough, fibrous tissues that connect muscles to bones. They transmit forces from muscles to bones, enabling movement.

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4. Label the human skeletal system

*(Since there’s no image provided for labeling, I’ll describe what should be labeled based on typical diagrams.)*

Assuming the diagram shows a human skeleton with two arrows pointing to parts:

- Top arrow (pointing to head): → Skull
- Bottom arrow (pointing to upper chest/shoulder area): → Rib cage or Sternum

Alternatively, if the second arrow points to the shoulder:
- → Shoulder girdle (clavicle and scapula)

But most commonly in basic diagrams:
- Arrow 1: Skull
- Arrow 2: Rib cage

> 🔍 Note: Without seeing the actual image, these are standard labels for such diagrams.

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✔ Final Answers Summary:

#### 1. Fill in the blanks:
a. Bones
b. Heart, Lungs
c. Bones
d. Smooth

#### 2. Tick the correct word:
a. 22
b. Longest
c. Enamel
d. Tibia

#### 3. Definitions:
a. Bone marrow – Soft tissue inside bones that produces blood cells.
b. Ligaments – Connect bone to bone; stabilize joints.
c. Tendons – Connect muscle to bone; enable movement.

#### 4. Labeling (typical):
- Top: Skull
- Bottom: Rib cage

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Let me know if you'd like a printable version or need help drawing the labels!