Muscle Names Flashcards by Sara Squires

Q

Frontalis

A

Raises eyebrows, wrinkles forehead

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Q

Occipitalis

A

Facial expressions

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Q

Orbicularis oculi

A

Closes eyelids

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Q

Orbicularis oris

A

Kissing, whistling

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Q

Zygomaticus major and minor

A

Laughing, smiling

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Q

Platysma

A

Lower jaw, frown

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Q

Masseter

A

Elevates mandible, closes the jaw

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Q

Temporalis

A

Biting, chewing food

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Q

Sternocleidomastoid

A

Moves head side to side, extends head

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Q

Quadratus lumborum

A

Lateral flexion of trunk. Lateral stability to vertebral column. Stabilizes 12th rib during inspiration

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Q

Erector spinea

A

Consists of the iliocostalis, longissimus, spinalis muscles

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Q

Rectus abdominis

A

Flexes trunk, depresses ribs, and upwardly rotates pelvis

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Q

External oblique

A

rotation of trunk to opposite side and lateral flexion of trunk to same side. flexion of the trunk

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Q

Internal oblique

A

rotation of trunk to same side and lateral flexion of trunk to same side. flexion is of the trunk

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Q

Transverse abdominis

A

Compresses abdominal contents

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Q

External intercostals

A

Elevates rib cage, aids inspiration

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Q

Internal intercostals

A

Depresses rib cage, aids in expiration

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Q

Diaphragm

A

Breathing in and out

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Q

Trapezius

A

Elevates and depresses shoulders, bending and turning the head, internally rotate arm

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Q

Rhomboid major

A

Adducts, stabilizes, and downwardly rotates the scapula

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Q

Rhomboid minor

A

Adducts, stabilizes, and downwardly rotates the scapula

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Q

Latissimus dorsi

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A

Extends shoulder joint, adducts and medially rotates the humerus, depresses and downwardly rotates scapula

Q

Pectoralis major

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A

Flexes shoulder joint, adducts and medially rotates the humerus

Q

Pectoralis minor

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A

Depresses, protracts and stabilizes the scapula

Serratus anterior

Stabilizes, protracts and upwardly rotates the scapula

Supraspinatus

Abducts humerus (to 60 degrees)

Infraspinatus

Latetal rotation and slight adduction of humerus

Teres minor

Lateral rotation and slight adduction of humerus

Teres major

Extends shoulder joint, adducts, and medially rotates humerus

Deltoid

Abducts humerus, •anterior fibers flex shoulder joint and medially rotates humerus •posterior fibers extend shoulder joint and laterally rotate humerus •middle fibers are pure abductors

Biceps brachi

Supinates the forearm. Flexes the elbow. Longhead assists shoulder flexion

Brachialis

Flexes the elbow

Brachioradialis

Flexes forearm, half pronates, and half subinates

Triceps brachi

Extends elbow. Long head assists shoulder extension and adduction of the humerus

Palmaris longus

Flexes wrist and tenses palmar aponeurosis

Extensor digitorum

Extends wrist, 2-5 metacarpophalangeal joint and 2-5 interphalangeal joints

Gluteus maximus

Extends hip and laterally rotates the femur

Gluteus medius

Abducts and medially rotates the femur

Iliacus

Flexes the hip or flexes the trunk when the thigh is fixed

Psoas major

Flexes the hip or flexes the trunk when the thigh is fixed

Biceps femoris

Flexes knee, extension and lateral rotation of the hip

Semitendinosus

Flexes the knee, medially rotates leg, extends hip

Semimembranosus

Flexes the knee, medially rotates leg; extends hip

Sartorius

Flexes the hip and laterally rotates the thigh, flexes at the knee

Rectus femoris

Extends at the knee and flexes at the hip

Vastus lateralis

Extends leg at the knee

Vastus medialis

Extends leg at knee

Vastus intermedius

Extends leg at knee

Gracilis

Adducts the femur, flexes knee and medially rotates the femur

Tensor fasciae latae

Flexes hip, abducts and medially rotates the femor

Tibialis anterior

Dorsiflexes the ankle and inverts the foot

Soleus

Plantar flexes the ankle

Gastrocnemius

Planter flexion at the ankle, flexion at the knee

Peroneus longus

Planter flexes the ankle and everts the foot