Muscular Tissue - UNSOLVED PRACTICE SET
Chapter: Tissues | Topic: Muscular Tissue Striated Unstriated Cardiac
MUSCULAR TISSUE - UNSOLVED PRACTICE SET
Topic: Muscular Tissue Striated Unstriated Cardiac
Multiple Choice Questions
Q1. Striated muscles are also called:
- Smooth muscles
- Skeletal muscles
- Cardiac muscles
- Involuntary muscles
Q2. Unstriated muscles are found in:
- The limbs
- The walls of internal organs like the stomach and intestines
- The heart
- The face
Q3. Cardiac muscle cells are:
- Unbranched and multinucleated
- Branched, uninucleated, and connected by intercalated discs
- Spindle-shaped and uninucleated
- Cylindrical and multinucleated
Q4. Which type of muscle tissue shows voluntary movement?
- Cardiac muscle
- Smooth muscle
- Striated muscle
- Both cardiac and smooth muscle
Q5. Intercalated discs are characteristic of:
- Striated muscle
- Smooth muscle
- Cardiac muscle
- Skeletal muscle
Short Answer Questions
Q6. Differentiate between striated and unstriated muscles in terms of structure, location, and control (voluntary/involuntary).
Q7. What are intercalated discs? Why are they important for the functioning of cardiac muscle?
Q8. Why does cardiac muscle not fatigue even though it works continuously throughout life?
Q9. Explain why smooth muscles are called "involuntary muscles." Give TWO examples of where smooth muscles are found in the body.
Long Answer Questions
Q10. Draw well-labelled diagrams of striated muscle fibre, smooth muscle cell, and cardiac muscle cell. Compare their structures and functions in a tabular format.
Q11. Explain the structure of cardiac muscle. How is it adapted for continuous, rhythmic contraction without fatigue? Why is it considered both striated and involuntary?
APPLICATION / ANALYSIS
Q12. A marathon runner trains for months to build endurance. During training, her skeletal muscles become larger and stronger.
(a) What happens to the muscle fibres during this training? Explain the process of muscle hypertrophy.
(b) Why does the heart of an athlete beat slower at rest compared to a non-athlete? Explain with reference to cardiac muscle efficiency.
(c) If the runner stops training for 6 months, what changes would occur in her skeletal muscles? Explain.
Q13. During a biology class, a student learns that the stomach has smooth muscle while the arm has striated muscle.
(a) Why does the stomach need smooth muscle instead of striated muscle? Give TWO reasons.
(b) What would happen if the stomach had striated muscle instead of smooth muscle? Would digestion be affected?
(c) A person with a spinal cord injury cannot move their limbs but their stomach still digests food. Explain why, with reference to muscle types.