BIO 117 Lab Review #5 Muscles - II (arms & legs)

What is the trapezius of the scapula?

Which muscle of the scapula is:

• Big triangle in back, attached to neck, shoulder, & spine

• Action: retract scapula, (elevate & upper rot)

• Nerve: CN XI, C3, & C4 nerve roots

What is the rhomboids of the scapula?

Which muscle of the scapula is:

• Rhombus shaped, attached to spine and scapula

• Action: retract & downward rot scapula

• Nerve: dorsal scapular

What is the levator scapulae of the scapula?

Which muscle of the scapula is:

• Side of neck, attached to medial border of scapula

• Action: elevation & downward rot scapula

• Nerve: dorsal scapular

What is the serratus anterior of the scapula?

Which muscle of the scapula is:

• Lateral surface of ribcage

• Action: protracts & upper rot scapula

• Nerve: long thoracic

What is the supraspinatus of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Located at scapula’s supraspinous fossa

• Action: initiate (15 deg) arm abduction

• Nerve: suprascapular

What is the subscapularis of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Located at scapula’s subscapular fossa (anterior side)

• Action: medial rot humerus

• Nerve: subscapular

What is the infraspinatus of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Inferior to scapula’s spine, located at infraspinous fossa

• Action: lateral rot & ext humerus

• Nerve: suprascapular

What is the teres minor of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Inferior to infraspinatus, but superior to teres major

• Action: lateral rot & ext humerus

• Nerve: axillary

What is the teres major of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Inferior to teres minor

• Action: adduction, ext, medial rot arm

• Nerve: lower scapular

What is the deltoid (anterior, middle, posterior) of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Attached to scapula (posterior), acromial (middle), clavicular (anterior)

• Action: abducts arm (A = hort flex, P = hort ext)

• Nerve: axillary

What is the coracobrachialis of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Attached to scapula coracoid process

• Action: flex & adducts arm

• Nerve: musculocutaneous

What is the pectoralis major of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Fan-shaped, located at chest

• Action: flex & adducts arm

• Nerve: pectoral

What is the latissimus dorsi of the humerus/shoulder?

Which muscle of the humerus/shoulder is:

• Inferior to shoulder, wrap around back

• Action: adduction, ext, medial rot arm

• Nerve: Thoracodorsal

What is the biceps brachii of the forearm?

Which muscle of the forearm is:

• Two-headed, anterior upper arm

• Action: flex elbow, supination

• Nerve: musculocutaneous

What is the brachialis of the forearm?

Which muscle of the forearm is:

• Deep & inferior to biceps brachii

• Action: flex elbow

• Nerve: musculocutaneous

What is the brachioradialis of the forearm?

Which muscle of the forearm is:

• Lateral side of forearm, wraps from back of humerus to front of radius

• Action: flex elbow

• Nerve: radial

What is the triceps brachii of the forearm?

Which muscle of the forearm is:

• Posterior upper arm

• Action: ext elbow

• Nerve: radial

What is the anconeus of the forearm?

Which muscle of the forearm is:

• Small triangle at posterior elbow

• Action: ext elbow

• Nerve: radial

What is the supinator of the forearm?

Which muscle of the forearm is:

• Located on posterior radius, deep to anconeus

• Action: supinates forearm

• Nerve: radial

What is the pronator teres of the forearm?

Which muscle of the forearm is:

• Located on anterior elbow

• Action: pronates forearm

• Nerve: median

What is the pronator quadratus of the forearm?

Which muscle of the forearm is:

• Located on anterior wrist, square-shaped, proximal to carpals

• Action: pronates forearm

• Nerve: median

What is the flexor carpi radialis of the forearm?

Which muscle of the forearm is:

• Deep to pronator teres, anterior forearm

• Action: flex & abducts wrist

• Nerve: median

What is the flexor carpi ulnaris of the forearm?

Which muscle of the forearm is:

• Posterior border of ulna, medial to flexor carpi radialis

• Action: flex & adducts wrist

• Nerve: Ulnar

What is the extensor carpi radialis longus & brevis of the forearm?

Which muscle of the forearm is:

• Located on posterior forearm

• Action: ext & abducts wrist

• Nerve: radial

What is the extensor carpi ulnaris of the forearm?

Which muscle of the forearm is:

• Located on posterior foremen, attached to humerus lateral epicondyle and pinky

• Medial to extensor digitorum communis

• Action: ext & adducts wrist

• Nerve: radial

What is the flexor digitorum superficialis & profundus of the fingers?

Which muscle of the fingers is:

• Attached to the middle phalanx of the index, middle, ring, and pinky

• Two muscles, one under the other

• Action: flex fingers

• Nerve: median

What is the flexor pollicis longus of the fingers?

Which muscle of the fingers is:

• Anterior forearm, attached to thumb

• Action: flex thumb

• Nerve: median

What is the extensor digitorum communis of the fingers?

Which muscle of the fingers is:

• Attached to four distal phalanges, lateral to extensor carpi ulnaris

• Action: ext MP joints

• Nerve: radial

What is the extensor pollicis longus & brevis of the fingers?

Which muscle of the fingers is:

• Located on middle of posterior forearm, attached to thumb

• Action: ext thumb

• Nerve: radial

What is the abductor pollicis of the fingers?

Which muscle of the fingers is:

• Located on first metacarpal, superficial to opponens pollicis

• Action: abducts thumb

• Nerve: radial

What is the adductor pollicis of the fingers?

Which muscle of the fingers is:

• On anterior thumb, fan-shaped

• Action: adducts thumb

• Nerve: ulnar

What is the opponens pollicis of the fingers?

Which muscle of the fingers is:

• Located on first metacarpal, deep to abductor pollicis

• Action: thumb opposition

• Nerve: medial

What is the gluteus maximus of the femur?

Which muscle of the femur is:

• The buttock

• Action: ext & lateral rot hip

• Nerve: inferior gluteal

What is the gluteus medius of the femur?

Which muscle of the femur is:

• Deep to gluteus maximus

• Action: abducts & medial rot hip

• Nerve: superior gluteal

What is the gluteus minimus of the femur?

Which muscle of the femur is:

• Deep to gluteus medius

• Action: abducts & medial rot hip

• Nerve: superior gluteal

What is the tensor fasciae latae of the femur?

Which muscle of the femur is:

• On lateral hip, pocket area

• Action: prevents collapse of ext knee (locks knee)

• Nerve: superior gluteal

What is the iliotibial tact of the femur?

Which tendon of the femur is:

• Long tendon to lateral condyle of tibia

• Action: prevents collapse of ext knee (locks knee)

  Nerve: superior gluteal

What is the piriformis of the femur?

Which muscle of the femur is:

• Superior to superior gemellus

• Action: lateral rot & abducts hip

• Nerve: sacral plexus

What is the superior gemellus of the femur?

Which muscle of the femur is:

• Inferior to piriformis, superior to obturator internus

• Action: lateral rot hip

• Nerve: sacral plexus

What is the obturator internus of the femur?

Which muscle of the femur is:

• Inferior to superior gemellus, superior to inferior gemellus

• Action: lateral rot hip

• Nerve: sacral plexus

What is the inferior gemellus of the femur?

Which muscle of the femur is:

• Inferior to obturator internus, superior to quadratus femoris

• Action: lateral rot hip

• Nerve: sacral plexus

What is the quadratus femoris of the femur?

Which muscle of the femur is:

• Inferior to inferior gemellus, superficial to obturator externus

• Action: lateral rot hip

• Nerve: sacral plexus

What is the obturator externus of the femur?

Which muscle of the femur is:

• Deep to quadratus femoris

• Action: lateral rot hip

• Nerve: sacral plexus

What is the pectineus of the femur?

Which muscle of the femur is:

• Superior to adductor brevis

• Action: flex, adducts & medial rot hip

• Nerve: femoral

What is the adductor brevis of the femur?

Which muscle of the femur is:

• Inferior to pectineus, superior to adductor longus

• Action: adducts hip

• Nerve: obturator

What is the adductor longus of the femur?

Which muscle of the femur is:

• Inferior to adductor brevis, superior to adductor magnus

• Action: adducts hip

• Nerve: obturator & sciatic

What is the adductor magnus of the femur?

Which muscle of the femur is:

• Deep to adductor longus, superior to gracilis

• Action: adduct hip

• Nerve: obturator

What is the gracilis of the femur?

Which muscle of the femur is:

• Inferior to adductor magnus

• Action: adduct hip & medial rot knee

• Nerve: obturator

What is the psoas major of the femur?

Which muscle of the femur is:

• Medial to iliacus, forms an upside down V

• Action: flex & lateral rot hip

• Nerve: lumbar plexus

What is the iliacus of the femur?

Which muscle of the femur is:

• Lateral to psoas major

• Action: flex & lateral rot hip

• Nerve: femoral

What is the biceps femoris of the leg/knee?

Which muscle of the leg/knee is:

• On posterior thigh

• Lateral to semitendinosus and semimembranosus

• Action: flex knee, ext hip

• Nerve: sciatic

What is the semimembranosus of the leg/knee?

Which muscle of leg/knee is:

• On posterior thigh

• Medial and deep to semitendinosus

• Action: flex knee, ext hip

• Nerve: sciatic

What is the semitendinosus of the leg/knee?

Which muscle of the leg/knee is:

• On posterior thigh

• Superficial to semimembranosus

• Action: flex knee, ext hip

• Nerve: sciatic

What is the sartorius of the leg/knee?

Which muscle of the leg/knee is:

• Tailor’s muscle, anterior thigh

• Action: flex, abduct, lateral rot hip/ flex, med rot knee

• Nerve: femoral

What is the popliteus of the leg/knee?

Which muscle of the leg/knee is:

• Back of knee

• Action: unlocks ext knee (flex)

• Nerve: tibial

What is the rectus femoris of the leg/knee?

Which muscle of the leg/knee is:

• Attached from pelvis to kneecap, most superficial

• Action: ext knee, flex hip

• Nerve: femoral

What is the vastus intermedius of the leg/knee?

Which muscle of the leg/knee is:

• In between vastus lateralis and vastus medialis

• Action: ext knee

• Nerve: femoral