annie's - complete the following statements for lab exam 2

what muscle can pull the head toward the chest?

sternocleidomastoid

what muscle elevates hyoid bone and floor of mouth?

mylohyoid

what muscle depresses the larynx and hyoid?

sternothyroid

what muscles pull the ribs toward one another to elevate rib cage?

internal intercostals

what muscles compress abdominal contents?

transversus abdominis

what muscle pulls the abdominal wall inwards?

transversus thoracis

what muscles flex the vertebral column and compress the abdominal wall

external oblique

what two muscles stabilize the scapula?

rhomboid minor

rhomboid major

what muscle opens the lips?

levator labii superioris

what muscle closes the jaw?

temporalis

what muscle fixes the aponeurosis and pulls the scalp posteriorly?

occipitofrontalis occipital belly

what muscle draws the lower lip inferiorly?

depressor labii inferiors

what muscle stabilizes, raises, retracts, and rotates the scapula?

trapezius

what muscle is a prime mover of arm extension; powerful arm adductor; & medially rotates arm at the shoulder?

latissimus dorsi

what muscle compresses the cheek?

buccinator

what muscle wrinkle the chin?

mentalis

what muscle raises the eyebrows?

occipitofrontalis frontal belly

what muscle closes the lips?

orbicularis oris

what muscle can extend and laterally flex the vertebral?

erector spinae iliocostalis

what muscle can extend or hyperextend the head?

splenius

what muscle flexes vertebral column laterally?

quadratus lumborum

what muscle is the prime mover of finger extension?

extensor digitorum

what muscle pronates the forearm?

pronator teres

what muscle flexes distal interphalangeal joints?

flexor digitorum profundus

what muscle is a powerful forearm extensor?

triceps brachii

what muscle is a synergist in flexing the forearm?

brachioradialis

what muscle abducts the thumb?

abductor pollicis brevis

what muscle adducts and helps oppose the thumb?

adductor pollicis

what muscle can flex and adduct the arm?

coracobrachialis

what muscle rotates the arm laterally?

infraspinatus

what muscle is the chief medial rotator of the arm?

subscapularis

what muscle assists the biceps brachii to forcibly supinate the forearm?

supinator

what muscle is a major forearm flexor?

brachialis

what muscle flexes the thumb?

flexor pollicis brevis

what muscle extends, medially rotates, and adducts the arm?

teres major

what muscle abducts and medially rotates thigh?

gluteus medius

what muscle rotates thigh laterally and stabilizes the hip joint?

quadratus femoris

what muscle steadies the leg and trunk on thigh?

tensor fascia lata

what 2 muscles adducts, flexes, and medially rotates the thigh?

adductor longus and adductor brevis

what 3 muscles extend and stabilize the leg?

vastus lateralis, vastus medialis, and vastus intermedius

what muscle 2 muscles plantar flexors foot?

gastrocnemius and soleus

what muscle extends the great toe?

extensor hallucis longus

what muscle flexes and rotates the leg medially?

popliteus

what muscle plantar flexes and everts the foot?

fibularis longus

what muscle flexes, abducts, and laterally rotates the thigh?

sartorius

what muscle adducts thigh, flexes and medially rotates the leg?

gracilis

what muscle is the prime mover of dorsiflexion?

tibialis anterior

what muscle is a major extensor of the thigh?

gluteus maximus

what are examples of prime movers (agonist)?

-biceps brachii

-triceps brachii

-latissimus dorsi

biceps brachii

flexor & supinator of the forearm

triceps brachii

extensor of the forearm

latissimus dorsi

arm extension

what are some examples of anatagonist muscles?

-triceps brachii & biceps brachii

-latissimus dorsi & pectoralis major

-biceps femoris & quadriceps femoris

triceps brachii & biceps brachii

extensor of the forearm & flexor of the forearm

latissimus dorsi & pectoralis major

pulls the arm at the back & pulls the arm ahead

biceps femoris & quadriceps femoris

flexor of the leg & extensor of the leg

what are some examples of synergists?

-pectoralis minor & trapezius

-anconeus & triceps brachii

-biceps brachii & brachioradialis

pectoralis minor & trapezius

during fixation of the scapula

anconeus & triceps brachii

during elbow extension

biceps brachii & brachioradialis

while flexing the forearm