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Muscular System
Naming the Action of the Muscles
38
Anatomy
Undergraduate 1
07/06/2009

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Cards

Term
Buccinator Muscles
Definition
Action: compresses cheek
Term
Frontalis
Definition
Raises eyebrows, draws scalp anteriorly
Term
Temporalis and Masseter
Definition
2 muscles that close the mandible
Term
Orbicularis occuli
Definition
Closes eyelid
Term
Orbicularis oris
Definition
Closes lips
Term
platysma
Definition
Depresses lower lips, opens jaw
Term
Sternocleidomastoid
Definition
Abducts, rotates and flexes head
Term
Trapezius
Definition
Extends and abducts head, rotates and abducts scapula, fixes scapula
Term
Diaphragm
Definition

Inspiration (contraction)

Expiration (relaxation)

Term
External intercostals
Definition
Elevates ribs (increases volume in thorax)
Term
Internal intercostals
Definition
Depresses ribs (decreases volume in thorax)
Term
External abdominal oblique
Definition
Compresses abdominal wall, laterally rotates trunk
Term
Internal abdominal oblique
Definition
Compresses abdominal wall, laterally rotates trunk
Term
Infraspinatus
Definition
Laterally rotates arm, stabilizes shoulder joint
Term
Pectoralis major
Definition
Flexes, adducts and medially rotates arm
Term
Latissimus dorsi
Definition
extends, adducts and medially rotates arm, draws shoulder inferiorly
Term
rectus abdominus
Definition
flexes vertebral column, compresses abdominal wall
Term
Serratus interior
Definition
Abducts scapula
Term
subscapularis
Definition
medially rotates arm, stablizes shoulder joint
Term
supraspinatus
Definition
abducts arm, helps stabilize shoulder joint
Term
Transverse abdominis
Definition
Compresses abdominal wall, laterally rotates trunk
Term
biceps brachii
Definition
flexes arm, flexes forearm, supinates hand
Term
brachialis
Definition
flexes forearm
Term
deltoid
Definition
abducts arm, flexes, extends, medially and laterally rotates the arms
Term
supinator
Definition
supinates hand
Term
triceps brachii
Definition
extends and adducts the arm, extends the forearm
Term
adductor longus
Definition
adducts, flexes and laterally rotates thigh
Term
adductor magnus
Definition
adducts, flexes and laterally rotates thigh
Term
biceps femoris
Definition
extends thigh, flexes nerve
Term
gastrocnemius
Definition
flexes leg, plantar flexes foot
Term
gluteus maximus
Definition
extends and laterally rotates thigh, braces knee
Term
gluteus medias
Definition
abducts and medially rotates thigh
Term
gracilis
Definition
abducts thigh, flexes leg
Term
rectus femoris
Definition
flexes thigh, extends leg
Term
sartorius
Definition
flexes and laterally rotates thigh, flexes leg
Term
semimembranosus and semitendinosus
Definition
extends thigh, flexes leg
Term
vastus lateralis
Definition
extends leg
Term
vastus medialus
Definition
often called the teardrop muscle, it extends the leg
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