gross anatomy lecture exam 3

the manubrium is in line with which vertebrae?

inferior border of T2

anteriorly, the manubriosternal joint (sternal angle/angle of louis) in line with the.....

2nd costal cartilage

posteriorly, the manubriosternal joint (sternal angle/angle of louis) in line with the.....

T4 and T5 vertebrae

posteriorly, the xiphisternal joint is in line with the.....

T8 and T9 vertebrae

what dermatome is in line with the nipple?

T4

what dermatome is on the back of the head?

C2

what is the nucleus pulposus a remnant of?

notochord

what is the superior border of the deltopectoral triangle?

clavicle

what is the medial border of the deltopectoral triangle?

pectoralis major muscle

what is the lateral border of the deltopectoral triangle?

deltoid muscle

what are the contents of the deltopectoral triangle?

cephalic vein, deltoid branch of thoracoacromial artery

what contents are in the quadrangular space?

axillary nerve and posterior circumflex humeral artery

what are the borders of the quadrangular space?

Superior: teres minor, Inferior : teres major, Lateral : Humerus, Medial :long head of tricep

what are the borders of the triangular space?

superior: teres minor, inferior: teres major, lateral: long head of triceps brachii

what are the contents of the triangular space?

circumflex scapular artery

what are the borders of the triceps hiatus?

teres major, long head of triceps, lateral head of triceps

what are the contents of the triceps hiatus?

radial nerve and deep brachial artery

the axillary artery is the continuation of the ________________ __________

subclavian artery

the 2nd division of the axillary artery is demarcated by the ___________ ____________

pectoralis minor muscle

the axillary vein becomes the subclavian vein at the.....

lateral border of the 1st rib

what muscles insert on the greater tubercle of the humerus?

infraspinatus, supraspinatus, and teres minor muscles

what muscle inserts on the lesser tubercle of the humerus?

subscapularis muscle

the medial (ulnar) collateral ligament limits ________ stress to the elbow

valgus

the lateral (radial) collateral ligament limits ______ stress to the elbow

varus

what is the CSD of the musculocutaneous nerve?

C5, C6, C7

what is the lateral border of the anatomical snuff box?

tendon of abductor pollicis longus m, tendon of extensor pollicis brevis m

what is the medial border of the anatomical snuff box?

tendon of extensor pollicis longus m

what runs through the 1st dorsal tunnel of the wrist?

tendon of abductor pollicis longus m, tendon of extensor pollicis brevis m

what runs through the 2nd dorsal tunnel of the wrist?

tendon of extensor carpi radialis longus m, tendon of extensor carpi radialis brevis m

what runs through the 3rd dorsal tunnel of the wrist?

tendon of extensor pollicis longus m

what runs through the 4th dorsal tunnel of the wrist?

tendons (4) of extensor digitorum m, tendon extensor indices m

what runs through the 5th dorsal tunnel of the wrist?

tendon of extensor digiti minimi m

what runs through the 6th dorsal tunnel of the wrist?

tendon of extensor carpi ulnaris m

what does the cephalic vein drain into?

axillary vein

which cord of the brachial plexus does the medial pectoral nerve come off of?

the medial cord

what is the CSD of the medial pectoral nerve?

C8, T1

which cord of the brachial plexus does the lateral pectoral nerve come off of?

the lateral cord

what is the CSD of the lateral pectoral nerve?

C5, C6, C7

the basilic vein runs along the ________ side of the arm and forearm

medial

the cephalic vein runs along the __________ side of the arm and forearm

lateral

the ulnar nerve and the ulnar artery runs under....

the 1st layer of the anterior compartment of the forearm

the extensor indicis muscle runs deep to the.....

extensor digitorum muscle

the musculocutaneous nerve switches to the _________________ nerve in the cubital region

lateral antibrachial cutaneous

which nerves make up the M of the brachial plexus? list them from lateral to medial

musculocutaneous nerve, median nerve, ulnar nerve

the M of the brachial plexus is formed of which cords?

lateral and medial

The upper trunk of the brachial plexus gives rise to the __________ and __________ nerves.

suprascapular and nerve to subclavius

The lower trunk gives rise to the __________ nerve, which innervates the intrinsic muscles of the hand.

ulnar

The posterior cord gives rise to the __________ and __________ nerves.

axillary and radial

The median nerve is a combination of contributions from the __________ and __________ cords.

lateral and medial

The axillary nerve is derived from the __________ cord of the brachial plexus.

posterior

The musculocutaneous nerve innervates the muscles in the __________ compartment of the arm.

anterior

The ulnar nerve is responsible for the motor innervation of most of the __________ muscles of the hand.

intrinsic

The subclavian artery becomes the axillary artery after passing the __________.

first rib

The axillary artery is divided into three parts by the __________ muscle.

pectoralis minor

The first part of the axillary artery gives rise to the __________ artery, which supplies the first two intercostal spaces.

superior thoracic

The second part of the axillary artery gives rise to two major branches: the __________ artery and the __________ artery.

thoracoacromial and lateral thoracic

The third part of the axillary artery gives rise to the __________ artery, which is the continuation of the axillary artery.

brachial

The brachial artery runs along the __________ side of the arm and is the main source of blood supply to the forearm.

medial

The brachial artery bifurcates at the __________ into the radial and ulnar arteries.

cubital fossa

The brachial artery gives rise to the deep brachial artery, which supplies the __________ compartment of the arm.

posterior

The anterior circumflex humeral artery and the posterior circumflex humeral artery are branches of the _______ part of the axillary artery

third

The subclavian artery also gives rise to the _____________ artery

vertebral

The axillary artery becomes the brachial artery at the level of the __________.

inferior border of the teres major muscle

The axillary artery is located in the __________ region of the body.

axilla

The radial artery is located on the __________ side of the forearm, while the ulnar artery is located on the __________ side.

lateral, medial

The subclavian artery becomes the axillary artery as it passes beneath the __________.

clavicle

The brachial artery runs along the medial side of the __________ and gives rise to the __________ artery in the upper arm.

humerus, deep brachial artery

The profunda brachii artery runs through the __________ and supplies the muscles of the __________ compartment of the arm.

triceps hiatus, posterior

The radial artery is located more on the __________ side of the forearm and runs deep to the __________ muscle.

lateral, brachioradialis

The ulnar artery runs along the __________ side of the forearm and passes under the __________ ligament at the wrist to enter the palm.

medial, palmar carpal

the axillary vein is formed of which veins?

brachial and basilic

the ___________ vein drains directly into the axillary vein

cephalic

The brachial plexus is formed by the __________ rami of the C5, C6, C7, C8, and T1 spinal nerves.

ventral

The brachial plexus is divided into five parts:

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

The ________ trunk of the brachial plexus is formed by the union of the C8 and T1 roots.

inferior

The ________ cord of the brachial plexus is formed by the union of the anterior divisions of the upper and middle trunks.

lateral

The terminal branch of the brachial plexus that innervates the deltoid and teres minor muscles is the ________ nerve.

axillary

The _________ nerve, a branch of the posterior cord, innervates the muscles of the posterior forearm and hand, including the triceps brachii.

radial

The ________ nerve, which arises from the medial cord, is responsible for innervating most of the intrinsic muscles of the hand.

ulnar

The _________ artery is closely associated with the lateral, posterior, and medial cords of the brachial plexus.

axillary

The ____________ nerve, originating from the lateral cord, innervates the biceps brachii, brachialis, and coracobrachialis muscles.

musculocutaneous

The _____________ nerve, arising from the posterior cord, is responsible for innervating the latissimus dorsi muscle.

thoracodorsal

The _______________ nerve is most commonly affected in cases of "winged scapula" due to injury to the long thoracic nerve in the brachial plexus.

long thoracic

The_________________ nerve of the forearm branch of the brachial plexus supplies sensory innervation to the skin on the lateral side of the forearm.

lateral cutaneous

all anterior muscles of the brachium (arm) are innervated by the ________________ nerve

musculocutaneous

all posterior muscles of the brachium (arm) are innervated by the _____________ nerve

radial

all muscles in the anterior compartment of the forearm are innervated by the __________ nerve except for 1 and 1/2 muscles

median

what are the 1 and 1/2 muscles of the anterior compartment of the forearm and what nerve are they innervated by?

flexor carpi ulnaris and flexor digitorum profundus medial half, ulnar nerve

all muscles of the posterior compartment of the forearm are innervated by the __________ nerve

radial

all muscles in the hand are innervated by the ______ nerve except for 1/2 loaf

ulnar

what are the muscles of 1/2 loaf and what nerve are they innervated by?

1st and 2nd lumborcal, opponens pollicis, abductor pollicis brevis, flexor pollicis brevis. median nerve

medial 2/3 of clavicle is _____________

convex

lateral 1/3 of clavicle is _____________

concave

the clavicle is an attachment site for:

muscles, ligaments, and supports the upper limb

what type of synovial joint is the sternoclavicular joint?

saddle joint

what are the only 2 saddle joints in the body?

sternoclavicular joint and carpometacarpal joint of thumb

the sternoclavicular joint allows the clavicle to....

move in all axes

the base of the breast extends from...

2nd-6th ribs and lateral margin of sternum to midaxillary line

the ___________ _________ extends to the lower border of the pectoralis major muscle and enters the axilla

axillary tail

mammary glands are located in the....

subcutaneous tissue