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

A

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

Q

Pectoralis major

A

Flexes shoulder joint, adducts and medially rotates the humerus

Q

Pectoralis minor

A

Depresses, protracts and stabilizes the scapula

Q

Serratus anterior

A

Stabilizes, protracts and upwardly rotates the scapula

Q

Supraspinatus

A

Abducts humerus (to 60 degrees)

Q

Infraspinatus

A

Latetal rotation and slight adduction of humerus

Q

Teres minor

A

Lateral rotation and slight adduction of humerus

Q

Teres major

A

Extends shoulder joint, adducts, and medially rotates humerus

Q

Deltoid

A

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

Q

Biceps brachi

A

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

Q

Brachialis

A

Flexes the elbow

Q

Brachioradialis

A

Flexes forearm, half pronates, and half subinates

Q

Triceps brachi

A

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

Q

Palmaris longus

A

Flexes wrist and tenses palmar aponeurosis

Q

Extensor digitorum

A

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

Q

Gluteus maximus

A

Extends hip and laterally rotates the femur

Q

Gluteus medius

A

Abducts and medially rotates the femur

Q

Iliacus

A

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

Q

Psoas major

A

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

Q

Biceps femoris

A

Flexes knee, extension and lateral rotation of the hip

Q

Semitendinosus

A

Flexes the knee, medially rotates leg, extends hip

Q

Semimembranosus

A

Flexes the knee, medially rotates leg; extends hip

Q

Sartorius

A

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

Q

Rectus femoris

A

Extends at the knee and flexes at the hip

Q

Vastus lateralis

A

Extends leg at the knee

Q

Vastus medialis

A

Extends leg at knee

Q

Vastus intermedius

A

Extends leg at knee

Q

Gracilis

A

Adducts the femur, flexes knee and medially rotates the femur

Q

Tensor fasciae latae

A

Flexes hip, abducts and medially rotates the femor

Q

Tibialis anterior

A

Dorsiflexes the ankle and inverts the foot

Q

Soleus

A

Plantar flexes the ankle

Q

Gastrocnemius

A

Planter flexion at the ankle, flexion at the knee

Q

Peroneus longus

A

Planter flexes the ankle and everts the foot