Three types of muscle tissue are shown as (a), (b) and (c): (a) Long, parallel, cylindrical striated (cross-banded) fibres with peripheral nuclei. (b) Spindle-shaped (fusiform) non-striated cells tapering at both ends, each with a single central nucleus. (c) Striated, branched fibres joined end-to-end with central nuclei. Identify the correct matching pair along with their location in the human body (Name of muscle / location):
Answer: (A) Skeletal - Triceps, (b) Smooth - Stomach, (c) Cardiac - Heart. Answer: A.
- A.Skeletal - Triceps, (b) Smooth - Stomach, (c) Cardiac - Heart✓
- B.Skeletal - Biceps, (b) Involuntary - Intestine, (c) Smooth - Heart
- C.Involuntary - Nose tip, (b) Skeletal - Bone, (c) Cardiac - Heart
- D.Smooth - Toes, (b) Skeletal - Legs, (c) Cardiac - Heart
Correct Answer
(A) Skeletal - Triceps, (b) Smooth - Stomach, (c) Cardiac - Heart
Solution & Explanation
Answer: A. Figure (a) is striated, cylindrical, parallel fibres = skeletal muscle (e.g. triceps); figure (b) is non-striated, spindle-shaped (fusiform) cells = smooth/visceral muscle, found in walls of hollow organs like the stomach; figure (c) is striated, branched fibres = cardiac muscle of the heart. Only option A matches all three correctly: Skeletal-Triceps, Smooth-Stomach, Cardiac-Heart. Options B, C and D contain wrong muscle types or wrong locations (e.g. smooth-Heart, skeletal-Bone, smooth-Toes). NCERT Ch 17, p.218, line 30: "identified : (i) Skeletal (ii) Visceral and (iii) Cardiac."