BIO290 Upper/lower limbs NEW

Lateral cord of brachial plexus gives rise to what?

musculocutaneous nerve

*also contributes to median nerve (lateral root)

Medial cord gives rise to what?

ulnar nerve

*also contributes to median nerve (medial root)

Posterior cord gives rise to what 2 cords?

Axillary and radial

what innervates the biceps brachii, brachialis, coracobrachialis?

musculocutaneous nerve

what innervates deltoid and teres minor

axillary nerve

what innervates all muscles on the back of arm and forearm?

radial nerve

What group of muscles are these from: iliopsoas, sartorius, rectus femoris

hip flexor

flexes thigh (hip flexor)

iliopsoas

flexes thigh/leg; lateral rotation (hip flexor)

sartorius

flexes thigh; extends leg (hip flexor and anterior thigh muscle)

rectus femoris

What nerve, artery, and vein are associated with the hip flexors (iliopsoas, sartorius, rectus femoris)

femoral nerve, femoral artery, femoral vein

arterial blood flow down the leg starting at abdominal aorta

abdominal aorta → common iliac artery → external iliac → femoral → popliteal → anterior tibial → posterior tibial → fibular (peroneal) artery

what is the only anterior thigh muscle to cross the hip joint

rectus femoris

what muscle group are these in: rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

anterior thigh

what’s the action the vastus lateralis, medialis, and intermedius share

extend leg

what nerve, artery, and vein are associated with the anterior thigh muscles (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius)

femoral nerve, femoral artery, femoral vein

what muscle group are these in: pectineus, adductor longus/brevis/magnus, gracilis

medial thigh (adductors)

adducts and flexes thigh

pectineus

action of adductor longus/brevis/magnus

adduct thigh

the adductor magnus adducts the thigh but it also __ the thigh

extends

adducts thigh and flexes leg

gracilis

what are the nerve, artery, and vein associated with the medial thigh (adductors) [pectineus, adductor longus/brevis/magnus, gracilis]

obturator nerve, obturator artery, obturator vein

what group are these muscles in: semimembranosus, semitendinosus, biceps femoris long head and short head

posterior thigh (hamstrings)

action of semimembranosus, semitendinosus, biceps femoris long head

extend thigh; flex leg

action of biceps femoris short head

flex leg (no thigh action)

what nerve, artery, and vein are associated with the posterior thigh (hamstrings) [semimembranosus, semitendinosus, biceps femoris long head and short head]

tibial division of sciatic nerve, deep femoral artery and vein

*biceps femoris short head = common fibular division of sciatic nerve

what compartment are these muscles in: tibialis anterior, extensor hallucis longus, extensor digitorum longus, fibularis tertius

anterior leg

dorsiflex and invert

tibialis anterior

extends hallux; dorsiflexes

extensor hallucis longus

extends digits; dorsiflexes

extensor digitorum longus

evert and dorsiflexes

fibularis tertius

nerve, artery, and vein associated with anterior leg [tibialis anterior, extensor hallucis longus, extensor digitorum longus, fibularis tertius]

deep fibular nerve, anterior tibial artery/veins

what compartment are fibularis longus and brevis in

lateral leg

action of fibularis longus/brevis

evert and plantar flex foot

nerve, artery, and veins associated with lateral leg (fibularis longus/brevis)

superficial fibular nerve, fibular artery/vein

what muscle group are these in: gastrocnemius, plantaris, soleus, tibialis posterior, flexor digitorum longus, flexor hallucis longus

posterior leg

action of gastrocnemius and plantaris

plantar flex foot/flex leg

action of soleus

plantar flex foot

invert and plantar flex foot

tibialis posterior

flex digits; plantar flex foot

flexor digitorum longus

flex hallux; invert and plantar flex foot

flexor hallucis longus

nerve, artery, and vein associated with posterior leg (plantaris, soleus, tibialis posterior, flexor digitorum longus, flexor hallucis longus)

tibial nerve, posterior tibial artery/veins

what muscle group are these in: serratus anterior, rhomboideus (major and minor), levator scapulae

serratus group

protracts and depresses scapula

serratus anterior

elevates and retracts scapula

rhomboideus (major and minor)

elevates scapula

(levator scapulae)

what muscle group: latissimus dorsi, teres major, subscapularis

latissumus group

action of latissimus dorsi, teres major, and subscapularis

adducts and medially rotates humerus

subscapularis and teres minor are a part of the __ cuff

rotator

what group: deltoideus and teres minor

deltoid group

flex and medially rotate, abduct, and laterally rotate

deltoideus (anterior, middle, and posterior regions)

laterally rotates humerus

teres minor

what innervates deltoideus and teres minor

axillary nerve

extends forearm and humerus (long head = humerus)

triceps brachii (lateral, medial, and long)

what innervates triceps brachii

radial nerve

adducts and flexes humerus

coracobrachialis

flexes forearm

brachialis

flex humerus, flex forearm, supinate forearm

biceps brachii

nerve, artery, and vein associated with coracobrachialis, brachialis, and biceps brachii

musculocutaneous nerve, brachial artery/veins

pronates forearm

pronator teres and pronator quadratus

flexes and abducts hand

flexor carpi radialis

flexes hand

palmaris longus

flexes and adducts hand

flexor carpi ulnaris

nerve, artery, and vein associated with superficial flexor forearm muscles (pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris)

median nerve (FCU = ulnar nerve), radial and ulnar arteries/veins

flexes hand and digits 2-5

flexor digitorum superficialis and flexor digitorum profundus

nerve, artery, and vein associated with flexor digitorum superficialis

median nerve, radial/ulnar arteries/veins

flexes hand and thumb (Pollux)

flexor pollicis longus

what innervates flexor digitorum profundus, flexor pollicis longus, and pronator quadratus

median and ulnar nerves (FDP = dual innervation)

***flexes the forearm especially in mid-pronated position (important muscle)

***brachioradialis

extends and abducts hand (2 muscles)

extensor carpi radialis longus and extensor carpi radialis brevis

extends hand and digits 2-5

extensor digitorum

extends hand and digit 5

extensor digiti minimi

extends and adducts hand

extensor carpi ulnaris

supinates forearm

supinator

what innervates brachioradialis, extensor carpi radialis longus + brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, and supinator

radial nerve