Question

Which of the following muscle bends a part over another?
A. Flexor
B. Extensor
C. Abductor
D. Adductor

Answer 1

Hint:
Muscle is a group of fibrous tissue in the body that can contract to move or hold in place specific body parts. Flexors are muscles that bend apart over one another. For instance, as we pull the hand closer to the shoulder, the elbow joint flexes. Muscle contraction is often what causes flexion (to bring about an action).

Complete answer:
Flexor: A muscle called a flexor bends a joint. Flexion is a joint movement in anatomy that reduces the angle between the convergent bones at the joint. For instance, bringing one's hand closer to the shoulder causes the elbow joint to flex. Flexor muscle contraction is usually what causes flexion. This muscle bends one part over another.
Extensor: Extensor muscles are any muscles that straighten the knee, or elbow, bend the spine or wrist backwards, or otherwise increase the angle between the members of a limb. With the notable exception of the knee joint, the movement is typically in the reverse direction. This muscle is called after certain human hand and foot muscles.
Abductor: Any muscle known as an abductor moves a limb away from the body's midline or a neighbouring section or limb, as in elevating the arms to the side (the deltoideus muscle is responsible for this) or spreading the fingers or toes. Man has certain hand and foot muscles that are named for carrying out this function. The little finger is abducted by the abductor digiti minimi manus in the hand, while the thumb is abducted by the abductor pollicis longus and abductor pollicis brevis.
Adductor: Any muscle that draws a section of the body toward its median line or the axis of an extremity is known as an adductor muscle (compare abductor muscle), and the adductor longus, adductor brevis, and adductor magnus are three of the most potent adductors in the human body. These ribbon-like muscles have their origins in the pubis and ischium (lower parts of the pelvis—the hipbone), and they are connected along the femur (thighbone).
Hence, the correct answer is Flexor

Option ‘A’ is correct

Note:
Each muscle has an exterior layer known as the perimysium (mainly skeletal). It protects and covers the muscle fibres. The epimysium, a fibrous layer that covers the entire muscle, spans the entire structure. Each bundle of fibres is referred to as a "fascicle." And each fibre is covered by the endomysium.