Muscular system quiz for Grade 7 science with answers.

📚 Quick Study Guide

• 💪 What is the Muscular System? The muscular system is made up of tissues that allow the body to move.
• 🧬 Types of Muscle: There are three main types: skeletal, smooth, and cardiac.
• 🏃 Skeletal Muscles: These are voluntary muscles attached to bones, responsible for movement.
• ❤️ Cardiac Muscle: Found only in the heart, this involuntary muscle pumps blood.
• 〰️ Smooth Muscle: Found in the walls of internal organs like the stomach and intestines; involuntary.
• 🧠 Voluntary vs. Involuntary: Voluntary muscles you can control (like your arm), involuntary muscles work automatically (like your heart).
• 💡 How Muscles Work: Muscles contract (shorten) and relax (lengthen) to create movement. They often work in pairs.

🧪 Practice Quiz

1. Which type of muscle is found in the heart?
   1. Skeletal
   2. Smooth
   3. Cardiac
   4. Voluntary
2. Which type of muscle is responsible for moving your arm?
   1. Cardiac
   2. Smooth
   3. Skeletal
   4. Involuntary
3. What is the main function of the muscular system?
   1. Digestion
   2. Movement
   3. Breathing
   4. Thinking
4. Which of the following is an example of an involuntary muscle?
   1. Bicep
   2. Tricep
   3. Heart
   4. Quadricep
5. What happens when a muscle contracts?
   1. It gets longer
   2. It stays the same
   3. It gets shorter
   4. It disappears
6. Where is smooth muscle typically found?
   1. Attached to bones
   2. In the heart
   3. In the brain
   4. In the walls of internal organs
7. What does 'voluntary muscle' mean?
   1. A muscle that works automatically
   2. A muscle you can control
   3. A muscle found only in the heart
   4. A muscle that never gets tired