Anatomy (Arm And Elbow)

Front 1

what ascends to the spiral groove on the distal portion of the humerus?

Back 1

lateral supracondylar ridge

Front 2

what divides the fascia of the arm into anterior and posterior compartments?

Back 2

medial and lateral intermuscular septa

Front 3

what muscles of the arm are in the anterior compartment of fascia?

Back 3

coracobrachialis
biceps brachii
brachialis

Front 4

what innervates the arm muscles in the anterior fascial compartment?
(coracobrachialis, biceps brachii, brachialis)

Back 4

musculocutaneous nerve (C5, C6)

from lateral cord of brachial plexus

Front 5

what muscles of the arm are in the posterior compartment of fascia?

Back 5

triceps brachii

Front 6

what innervates arm muscles in the posterior fascial compartment?
(triceps brachii)

Back 6

radial nerve (C5-T1)

from posterior cord of brachial plexus

Front 7

what are the attachments of the coracobrachialis?

Back 7

tip of coranoid process

1/2 way down humerus

Front 8

what innervates the coracobrachialis?

Back 8

musculocutaneous nerve (C5, C6)

Front 9

what are the actions of the coracobrachialis?

Back 9

flexes the arm

Front 10

what are the attachments of the biceps brachii?

Back 10

short head (caput breve) - coracoid process
long head (caput longum) - supraglenoid tubercle

both - tuberosity of radius, ulna via bicipital aponeurosis

Front 11

what innervates the biceps brachii?

Back 11

musculocutaneous nerve (C5, C6)

Front 12

what are the actions of the biceps brachii?

Back 12

"puts in corkscrew, pulls out cork"

supinates radius
flexes arm
flexes forearm

Front 13

what are the attachments of the brachialis?

Back 13

anterior aspect of distal 1/2 of humerus
intermuscular septa

anterior aspect of coronoid process of ulna

Front 14

what innervates the brachialis?

Back 14

musculocutaneous nerve (C5, C6)

Front 15

what are the actions of the brachialis?

Back 15

flexes forearm

Front 16

what are the attachments of the triceps brachii?

Back 16

long head - infraglenoid tubercle
medial head - posterior surface of humerus and intermuscular septa (below spiral groove)
lateral head - along a line from posterior margin of deltoid tuberosity

all - olecranon process of ulna

Front 17

what innervates the triceps brachii?

Back 17

radial nerve (C5-T1)

Front 18

what are the actions of the triceps brachii?

Back 18

extends elbow joint

Front 19

what forms the borders of the cubital fossa?

Back 19

lateral - brachioradialis
medial - pronator teres

Front 20

what are the contents of the cubital fossa, from lateral to medial?

Back 20

"Really Need Beer To Be At My Nicest"

Radial Nerve
Biceps Tendon
Brachial artery
Median nerve

Front 21

in the cubital fossa, what hides inferior to the brachioradialis?

Back 21

radial nerve

Front 22

what is posterior to the brachial artery in the arm?

Back 22

triceps brachii and then the brachialis

Front 23

where does the brachial artery divide into the radial and ulnar arteries?

Back 23

at the neck of the radius

Front 24

what are the terminal branches of the brachial artery?

Back 24

radial artery
ulnar artery

Front 25

what are the branches of the brachial artery?

Back 25

profunda brachii artery
superior ulnar collateral artery
inferior ulnar collateral artery
muscular branches
nutrient artery to the humerus
radial artery
ulnar artery

Front 26

with what arteries does the superior ulnar collateral artery anastomose?

Back 26

posterior ulnar recurrent artery
inferior ulnar collateral artery

Front 27

with what arteries does the inferior ulnar collateral artery anastomose?

Back 27

anterior ulnar recurrent artery
superior ulnar collateral artery

Front 28

what is the companion artery of the radial nerve?

Back 28

profunda brachii artery

Front 29

where does the profunda brachii artery arise?

Back 29

from the brachial artery, just distal to teres major

Front 30

what major arteries does the profunda brachii provide anastomoses between?

Back 30

axillary artery

radial artery
ulnar artery

Front 31

from where is the musculocutaneous nerve derived?

Back 31

lateral cord of brachial plexus (C5, C6, C7)

Front 32

what muscle is pierced by the musculocutaneous nerve?

Back 32

coracobrachialis

then runs between biceps brachii and brachialis

Front 33

what is innervated by the musculocutaneous nerve?

Back 33

coracobrachialis
biceps brachii
brachialis

Front 34

what is the terminal branch of the musculocutaneous nerve? where does it arise?

Back 34

lateral antebrachial cutaneous nerve

at lateral border of biceps brachii

Front 35

from where is the ulnar nerve derived?

Back 35

medial cord of the brachial plexus (C7-T1)

Front 36

where does the ulnar nerve run in the arm?

Back 36

medial to brachial artery and then posterior to the medial intermuscular septum, against medial head of triceps brachii

Front 37

what are the branches of the ulnar nerve in the arm?

Back 37

there are none

Front 38

where does the ulnar nerve run at the elbow?

Back 38

posterior to the medial epicondyle and into forearm

Front 39

what accompanies the ulnar nerve at the elbow?

Back 39

superior ulnar collateral artery
ulnar collateral nerve

Front 40

from what nerve does the ulnar collateral nerve branch?

Back 40

radial nerve

Front 41

what is innervated by the ulnar collateral nerve?

Back 41

medial head of the triceps brachii

Front 42

from where does the median nerve arise?

Back 42

union of lateral and medial cords of the brachial plexus (C5-T1)

Front 43

what is the relationship of the median nerve to the brachial artery?

Back 43

arises lateral to the brachial artery (medial and lateral branches unite lateral to the artery), but the crosses the artery and lies on the medial side about 1/2 way down the arm

Front 44

what are the branches of the median nerve in the arm?

Back 44

there are none

(may give or receive a branch from the musculocutaneous nerve)

Front 45

from where does the radial nerve arise?

Back 45

continuation of the posterior cord (C5-T1)

Front 46

what is the relationship of the radial nerve to the axillary artery?

Back 46

runs posterior to it

Front 47

what is the relationship of the radial nerve to the brachial artery?

Back 47

runs posterior to it

Front 48

what is the relationship of the radial nerve to the long head of the triceps brachii?

Back 48

runs anterior to it into the posterior compartment of the arm

Front 49

between what muscles does the radial nerve enter the anterior compartment of the arm?

Back 49

brachioradialis
brachialis

Front 50

what are the two divisions of the radial nerve in the forearm? what type of fibers does each one carry?

Back 50

superficial radial nerve - sensory
deep radial nerve - mostly motor

Front 51

when does the deep radial nerve become the posterior interosseous nerve?

Back 51

after it pierces the supinator muscle

Front 52

from which nerve does the lower lateral cutaneous nerve of the arm branch?

Back 52

radial nerve

Front 53

from which nerve does the posterior cutaneous nerve of the forearm branch?

Back 53

aka dorsal antebrachial cutaneous

branches from radial nerve