Flexor

“Flexor” is a general anatomical term that refers to any muscle that causes flexion, meaning it decreases the angle between two body parts, typically at a joint.

A flexor is a muscle that bends a joint when it contracts.

The opposite of an extensor, which straightens a joint.

💪 Common Flexor Muscles (by region)

🖐️ Forearm (flexion of wrist/fingers)

Flexor carpi radialis – wrist flexion and radial deviation

Flexor carpi ulnaris – wrist flexion and ulnar deviation

Flexor digitorum superficialis – flexes PIP joints of fingers

Flexor digitorum profundus – flexes DIP joints of fingers

Flexor pollicis longus – flexes thumb

🦵 Thigh/Leg (hip/knee flexion)

Iliopsoas – main hip flexor

Rectus femoris – part of quadriceps, flexes hip

Hamstrings – flex the knee

💪 Arm (elbow flexion) Biceps brachii

Brachialis

Brachioradialis