Three types of muscles are given as a, b and c. Identify the correct matching pair along with their location in the human body.
Answer: (A) (a) Skeletal - Triceps, (b) Smooth - Stomach, (c) Cardiac - Heart. Answer: (A) (a) Skeletal - Triceps, (b) Smooth - Stomach, (c) Cardiac - Heart.
- A.(a) Skeletal - Triceps, (b) Smooth - Stomach, (c) Cardiac - Heart✓
- B.(a) Skeletal - Biceps, (b) Involuntary - Intestine, (c) Smooth - Heart
- C.(a) Involuntary - Nose tip, (b) Skeletal - Bone, (c) Cardiac - Heart
- D.(a) Smooth - Toes, (b) Skeletal - Legs, (c) Cardiac - Heart
Correct Answer
(A) (a) Skeletal - Triceps, (b) Smooth - Stomach, (c) Cardiac - Heart
Solution & Explanation
Answer: (A) (a) Skeletal - Triceps, (b) Smooth - Stomach, (c) Cardiac - Heart. Solution: The figure shows microscopic views of the three muscle types. Muscle (a) shows long, unbranched, cylindrical fibres with prominent transverse STRIATIONS and multiple peripheral nuclei — this is SKELETAL (striated, voluntary) muscle, attached to skeletal bones such as in the triceps/biceps of the arm. Muscle (b) shows spindle-shaped (fusiform) cells tapering at both ends, each with a single central nucleus and NO striations — this is SMOOTH (visceral, involuntary) muscle, found in the walls of internal organs like the stomach, intestine and blood vessels. Muscle (c) shows branched fibres joined at intercalated discs with central nuclei and faint striations — this is CARDIAC muscle, present only in the heart. Only option (a) correctly pairs all three with their proper type and location, so it is correct.