Block 4 Lab Exam

bicipital (intertubercular) groove

deep sulcus that runs between the greater and lesser tubercles on the PROXIMAL end of the humerus

contens of the bicipital groove

tendon for the biceps brachii long head

radial (spiral) groove

shallow depression that runs obliquely down the posterior aspect of the humerus shaft from medial to lateral

contents of the radial groove

• radial nerve

• deep brachial artery

order of carpals

• thumb to pinky (proximal)

• pinky to thumb (distal)

• thumb to pinky (proximal): scaphoid, lunate, triquetrum, pisiform

• pinky to thumb (distal): hamate, capitate, trapezoid, trapezium

the joints of the ___ show the highest degree of movement of any structure in the body

upper limb

flexion

decreasing the angle of a joint

extension

increasing the angle of a joint

abduction

movement away from midline

adduction

movement towards the midline

muscles performing flexion aka flexors are typically found on the ___ aspect

anterior

muscles performing extension aka extensors are typically found on the ___ aspect

posterior

the forearm and wrist also can perform ___

supination/pronation

supination

rotation so the palm is facing superiorly/anteriorly

pronation

rotation so the palm is facing inferiorly/posteriorly

in a pronatied position, the radius and ulna ___. in a supinated position, the radius and ulna are ___. In anatomical position, the forearm is ___.

• cross

• uncrossed

• supinated

what are the rotator cuff muscles

• supraspinatus

• infraspinatus

• teres minor

• subscapularis

SITS

the rotator cuff muscles and their tendons ___ stabilize the ____ joint and allow for a wide range of ___. ultimately they act as the ___ of the shoulder

• stabilize

• glenohumeral

• motion

• steering system

components of the rotator cuff are often injured due to ___

overuse, trauma, and degeneraiton

• the carpal tunnel is a narrow passageway in the ___ wrist (roughly _” wide)

• its surrounded by ___ and ___

• anterior (1)

• bones … ligaments

carpal tunnel syndrome occurs when the ___ nerve is compressed which leads to ___

numbness, tingling, and muscle weakness

anterior forearm (radial to ulnar side) muscles

• pronator teres

• flexor carpi radialis

• palmaris longus

• flexor carpi ulnaris

• flexor digitorum superficialis

PFPF/F

muscles of the palm (from thumb to pinky)

OAFALA

• opponens pollicis

• abductor pollicis brevis

• flexor pollicis brevis

• adductor pollicis

• lumbricals

• abductor digiti minimi

anatomical snuffbox (radial fossa)

triangular-shaped depression on the radial side of the dorsum of the hand thats best seeen when the thumb is extended

snuffbox borders

tendons of:

• extensor pollicis brevis/longus

• abductor pollicis longus

snuffbox content

radial artery and superficial radial nerve

deltoid innervation and location

• axillary

• shoulder

teres minor innervation and location

• axillary

• shoulder

teres major innervation and location

• lower subscap n

• shoulder

subscapularis innervation and location

• upper/lower subscapular n.

• shoulder

supraspinatus innervation and location

• suprascapular n.

• shoulder

infraspinatous innervation and location

• suprascapular n.

• shoulder

biceps brachii innervation and location

• musculotaneous n

• brachium

brachialis innervation and location

• musculotaneous n

• brachium

coracobrachialis innervation and location

• musculotaneous n

• brachium

triceps innervation and location

• radial n

• brachium

anconeus innervation and location

• radial n

• brachium

brachioradialis innervation and location

• radial n

• posterior forearm

extensor carpi radialis longus innervation and location

• radial n

• posterior forearm

extensor carpi radialis brevis innervation and location

• radial n

• posterior forearm

abductor pollicis longus innervation and location

• radial

• posterior forearm

extensor pollicis brevis innervation and location

• radial n

• posterior forearm

extensor pollicis longus innervation and location

• radial

• posterior forearm

extensor digitorum innervation and location

• radial

• posterior forearm

extensor digiti minimi innervation and location

• radial

• posterior forearm

extensor carpi ulnaris innervation and location

• radial

• posterior forearm

extensor indicis innervation and location

• radial

• posterior forearm

supinator innervation and location

• radial

• posterior forearm

pronator teres innervation and location

• median n

• anterior forearm

flexor carpi radialis innervation and location

• median n.

• anterior forearm

palmaris longus innervation and location

• median n

• anterior forearm

flexor carpi ulnaris innervation and location

• ulnar n

• anterior forearm

flexor digitorum superficialis innervation and location

• median n

• anterior forearm

flexor digitorum profundus innervation and location

• median AND ulnar nerve

• anterior forearm

pronator quadratus innervation and location

• median n

• anterior forearm

flexor pollicis longus innervation and location

• median n

• anterior forearm

opponens pollicis innervation and location

• median

• hand

abductor pollicis brevis innervation and location

• median n

• hand

flexor pollicis brevis innervation and location

• median AND ulnar

• hand

adductor pollcis innervation and function

• ulnar

• hand

lumbricals innervation and location

• median AND ulnar

• hand

abductor digiti minimi innervation and location

• ulnar

• hand

opponens digiti minimi innervation and location

• ulnar n

• hand

dorsal interosseous msucles innervation and location

• ulnar

• hand

brachial plexus are roots ___ and passes through ___ gap to reach the ___

• organized into ___,___,___,___,___

C5-T1 … scalene … upper limb

• roots, trunks, divisions, cords, and terminal branches

anatomical boundery of subclavian → axillary

lateral border of the 1st rib

anatomical boundery of axillary → brachial

inferior border of the t. major muscle

superficial veins drain towards ___ veins because blood needs to reach the heart

deeper

superficial veins are seen through the skin and useful during ___ which uses the ___ vein

venipuncture … median cubital

the median cubital vein (superficial) → into ___ and ___

cephalic v. … basilic v.

(Superficial)

the cephalic v. and basilic v. (superficial) → into ___

axillary v.

the axillary v. → into ___

subclavian v.

the radial and ulnar v. (deep) → into ___

brachial v.

the brachial v. → into ___

axillary v.