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28 terms

Muscle Function

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Orbicularis oris
Kissing Muscle
Masseter & Temporalis
Two muscles that close (elevate) the mouth
Sternocleidmastoid
Paired muscle that flexes head and rotates head to side
Trapezius
Extends head
Pectroalis major
Adducts and flexes arm
Deltoid
Anterior portion flexes arm; lateral portion abducts arm
Serratus anterior
Abducts scapula and rotates it upward (boxer's muscle).
Rectus abdominis
Flexes vertebral column and compresses abdomen
External & Internal Obliques
Two muscle pairs that flex vertebral column, compress abdomen, and laterally flex vertebral column
Transversus abdomen
Compresses abdomen only
Teres major & Latissimus dorsi
Extends, adducts, and rotates arm.
Deltoid
Posterior portion extends arm; lateral portion abducts arm
Trapezius
Superior portion elevates scapula, middle portion adducts scapula, inferior portion depresses scapula
Triceps brachii
extends forearm at elbow and extends arm
Biceps brachii
Flexes forearm at elbow and flexes arm
Flexor Carpi Ulnaris
Flexes and adducts hand
Brachioradialis
Flexes forearm and pronates and supinates forearm
Rectus Femoris
Extends leg at knee and flexes thigh at hip
Vastus intermedius, lateralis, and medialis
Three muscles that extend leg only
Satorius
Flexes leg and flexes, abducts, and laterally rotates thigh (allows us to flex and cross the legs).
Gracilis
Adducts thigh and flexes leg
Gluteus medius
abducts thigh
Tensor fasciae latae
Flexes and abducts thigh
Gluteus maximus
extends thigh
Biceps femoris, Semitendinosus, and Semimembranosus
Three muscles that flex leg and extend thigh
Gastrocnemius
Plantar flexes foot and flexes leg
Soleus
Plantar flexes foot only
Tibialis anterior
Dorsiflexes and inverts foot