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Concept
List of flexors of the human body
Summary
A flexor is a muscle that flexes a joint. In anatomy, flexion (from the Latin verb flectere, to bend) is a joint movement that decreases the angle between the bones that converge at the joint. For example, one's elbow joint flexes when one brings their hand closer to the shoulder. Flexion is typically instigated by muscle contraction of a flexor.
of the humerus bone (the bone in the upper arm) at the shoulder
Pectoralis major
Anterior deltoid
Coracobrachialis
Biceps brachii
of the forearm at the elbow
Brachialis
Brachioradialis
Biceps brachii
of carpus (the carpal bones) at the wrist
flexor carpi radialis
flexor carpi ulnaris
palmaris longus
of the hand
flexor pollicis longus muscle
flexor pollicis brevis muscle
flexor digitorum profundus muscle
flexor digitorum superficialis muscle
The hip flexors are (in descending order of importance to the action of flexing the hip joint):
Collectively known as the iliopsoas or inner hip muscles:
Psoas major
Iliacus muscle
Anterior compartment of thigh
Rectus femoris (part of the quadriceps muscle group)
Sartorius
One of the gluteal muscles:
Tensor fasciae latae
Medial compartment of thigh
Pectineus
Adductor longus
Adductor brevis
Gracilis
Without the iliopsoas muscles, flexion in sitting position is not possible across the horizontal plane.
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