Muscle Function

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Serratus anterior

Abducts scapula and rotates it upward (boxer's muscle).

Pectroalis major

Adducts and flexes arm

Gracilis

Adducts thigh and flexes leg

Deltoid

Anterior portion flexes arm; lateral portion abducts arm

Transversus abdomen

Compresses abdomen only

Tibialis anterior

Dorsiflexes and inverts foot

Trapezius

Extends head

Rectus Femoris

Extends leg at knee and flexes thigh at hip

Teres major & Latissimus dorsi

Extends, adducts, and rotates arm.

Tensor fasciae latae

Flexes and abducts thigh

Flexor Carpi Ulnaris

Flexes and adducts hand

Brachioradialis

Flexes forearm and pronates and supinates forearm

Biceps brachii

Flexes forearm at elbow and flexes arm

Satorius

Flexes leg and flexes, abducts, and laterally rotates thigh (allows us to flex and cross the legs).

Rectus abdominis

Flexes vertebral column and compresses abdomen

Orbicularis oris

Kissing Muscle

Sternocleidmastoid

Paired muscle that flexes head and rotates head to side

Gastrocnemius

Plantar flexes foot and flexes leg

Soleus

Plantar flexes foot only

Deltoid

Posterior portion extends arm; lateral portion abducts arm

Trapezius

Superior portion elevates scapula, middle portion adducts scapula, inferior portion depresses scapula

Vastus intermedius, lateralis, and medialis

Three muscles that extend leg only

Biceps femoris, Semitendinosus, and Semimembranosus

Three muscles that flex leg and extend thigh

External & Internal Obliques

Two muscle pairs that flex vertebral column, compress abdomen, and laterally flex vertebral column

Masseter & Temporalis

Two muscles that close (elevate) the mouth

Gluteus medius

abducts thigh

Triceps brachii

extends forearm at elbow and extends arm

Gluteus maximus

extends thigh


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