Skeletal & Muscular system worksheet - Free Printable

Let's solve this step-by-step based on the worksheet titled "Skeletal & Muscular System".

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I. Drag & Drop the Type of Muscle

We are given three types of muscles:
- Cardiac muscle
- Smooth muscle
- Skeletal muscle

Now, let’s answer each question:

#### 1. Which type of muscle is voluntary and located in the arms and legs?

- Answer: Skeletal muscle
- *Explanation:* Skeletal muscles are attached to bones and are responsible for voluntary movements like walking, lifting, etc. They are found in the arms, legs, and other parts of the body that we consciously control.

#### 2. Which type of muscle is involuntary, located in the heart, and helps pump blood?

- Answer: Cardiac muscle
- *Explanation:* Cardiac muscle is found only in the heart. It is involuntary (we don’t consciously control it) and contracts rhythmically to pump blood throughout the body.

#### 3. Which type of muscle is involuntary and located in the stomach, esophagus, and intestines?

- Answer: Smooth muscle
- *Explanation:* Smooth muscles line internal organs such as the stomach, intestines, and blood vessels. They work involuntarily to aid in processes like digestion and blood flow.

✔ So, the completed table looks like this:

| Question | Answer |
|--------|--------|
| 1. Which type of muscle is voluntary and located in the arms and legs? | skeletal muscle |
| 2. Which type of muscle is involuntary, located in the heart, and helps pump blood? | cardiac muscle |
| 3. Which type of muscle is involuntary and located in the stomach, esophagus, and intestines? | smooth muscle |

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II. Drag & Drop the Joints Name Next to Its Matching Color

We are shown a skeleton with joints marked by colored circles:
- Blue
- Yellow
- Red
- Green

And we have joint types to match:
- Hinge
- Ball & Socket
- Fixed
- Pivot

Let’s identify the joints by location and color:

#### Color-coded joints:

1. Blue Circles – Located at:
- Shoulders
- Hips
- Elbows
- Knees

But wait — looking closely:
- The shoulders and hips are ball-and-socket joints.
- The elbows and knees are hinge joints.

However, both shoulders/hips and elbows/knees are marked blue. That suggests blue may represent two types, but since we're matching one color to one joint type, likely:
- Blue = Ball & Socket (shoulders and hips)
- But elbows and knees are also blue → conflict?

Wait — let’s look again.

Actually, in the image:
- Blue: Shoulder, elbow, hip, knee → multiple types?
But no — each color appears only once per joint type?

Let’s analyze carefully:

From the diagram:
- Yellow circle → at the neck (atlantoaxial joint) → this is a pivot joint.
- Red circles → at the shoulders and hips → these are ball and socket joints.
- Blue circles → at elbows and knees → these are hinge joints.
- Green circle → at the skull (top of head) → this is a fixed joint (between skull bones), or possibly sutures.

Wait — green is at the top of the skull (on the head). That’s likely the cranial sutures, which are fixed joints.

So let's assign:

| Color | Joint Location | Joint Type |
|------|----------------|------------|
| Yellow | Neck (atlantoaxial joint) | Pivot |
| Red | Shoulder and Hip | Ball & Socket |
| Blue | Elbow and Knee | Hinge |
| Green | Skull (sutures) | Fixed |

But the worksheet has only one box per color, so we must assign one joint type per color, even though some colors appear in multiple places.

Let’s finalize:

- Blue → Elbow and Knee → Hinge joints
- Yellow → Neck (atlas-axis) → Pivot joint
- Red → Shoulder and Hip → Ball & Socket
- Green → Top of skull → Fixed joint

✔ So the matching is:

| Color | Joint Type |
|-------|------------|
| Blue | Hinge |
| Yellow | Pivot |
| Red | Ball & Socket |
| Green | Fixed |

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✔ Final Answers:

#### Part I: Muscle Types

| Question | Answer |
|--------|--------|
| 1. Voluntary, arms and legs | skeletal muscle |
| 2. Involuntary, heart, pumps blood | cardiac muscle |
| 3. Involuntary, stomach, esophagus, intestines | smooth muscle |

#### Part II: Joint Types

| Color | Joint Type |
|------|------------|
| Blue | Hinge |
| Yellow | Pivot |
| Red | Ball & Socket |
| Green | Fixed |

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🧠 Summary of Concepts:

- Muscle Types:
- Skeletal: Voluntary, attaches to bones, enables movement.
- Cardiac: Involuntary, only in heart.
- Smooth: Involuntary, in walls of internal organs.

- Joint Types:
- Ball & Socket: Allows rotation in multiple directions (shoulder, hip).
- Hinge: Movement in one plane (elbow, knee).
- Pivot: Rotation around an axis (neck).
- Fixed: No movement (skull sutures).

This completes the worksheet!