The natures of Biceps, Pyriformis and Latissimus dorsi muscles respectively are:
(a) Adductor, Extensor, Abductor
(b) Extensor, Flexor, Rotator
(c) Flexor, Rotator, Adductor
(d) Rotator, Abductor, Adductor
WBBSE
Class X
Life Science
01 (e) Locomotion as a type of response in Animals
1 Marks
2024
(c) Flexor, Rotator, Adductor
Explanation:
- The biceps muscle acts as a flexor muscle, responsible for bending the elbow joint.
- The pyriformis muscle functions as a rotator, helping laterally rotate the thigh at the hip joint.
- The latissimus dorsi muscle is an adductor, pulling the arm toward the body’s midline.
This classification is based on the specific actions these muscles perform during movement. Understanding these functional roles is fundamental to the study of locomotion and muscle mechanics.
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