arteries and blood vessels and misc. Flashcards
injury to the axillary nerve is known as?
crutch paralysis
what structures does the quadrilateral space contain?
axillary nerve and humeral circumflex blood vessels (artery and vein)
what structures does the triangular space contain?
circumflex scapular branch of the subscapular artery
what is the main arterial supply to the arm?
brachial artery
the brachial artery is a continuation of the _____ and divides into what 2 branches?
axillary artery, ulnar and radial arteries
the brachial artery starts where and ends where?
it starts at the medial aspect of the arm and descends, shifts slightly lateral and ends at the midpoint of the humerus
where is the pulse taken on the brachial artery?
bicipital furrow
where does the deep brachial branch begin? (brachial profundus)
it begins just distal to the teres major muscle
what is the function of the deep brachial branch?
it supplies the posterior aspect of the arm and brings the axillary artery into communication with the radial artery
what is the function of the superior and inferior collateral branches of the brachial artery?
they take part in the arterial anastomosis around the medial aspect of the elbow joint
which blood vessel is used to take blood pressure?
brachial artery
which veins are located in the subcutaneous tissue of the extremity and descend up the extremity?
cutaneous veins of the up extremity
where is the dorsal venous arch found?
it is the prominent venous arch found on the back of the hand and where respective cutaneous veins arrive
where does the cephalic vein travel and terminate?
it comes off the lateral aspect of the dorsal venous arch and continues in lateral aspect of arm and forearm; it terminates/ drains into the axillary vein
where does the basilic vein travel and terminate?
it comes off the medial dorsal venous arch and continues in proximal forearm and arm; it joins with the brachial veins and FORMS the axillary vein
which vein is the most prominent cutaneous vein and is the main connection between the cephalic and basilica veins?
median cubital vein
where is blood most commonly taken from?
median cubital vein
why is the musculocutaneous nerve rarely injured?
because of its protected position beneath the biceps brachii muscle
what is the cubital fossa?
a depression found at the anterior aspect of the elbow and marks a point where many nerves and vessels enter the forearm
what 4 important structures are found in the cubital fossa?
median nerve
brachial artery
tendon of biceps brachii
median cubital vein
what are the branches of the radial ARTERY?
- recurrent which runs proximal to brachial profundus and takes part in collateral circulation
- unnamed muscular branches
- superficial and deep palmar which join the smaller branches of the ulnar artery to form the superficial and deep palmar arches of the hand
what are the branches of the ulnar ARTERY?
- anterior and posterior recurrent which join the ulnar collaterals of the brachial to form collateral circulation
- common interosseous which divides into an anterior and posterior interosseous artery
- superficial and deep palmar which help form superficial and deep arches
what structures are superficial to the extensor retinaculum?
dorsal venous arch, basilic and cephalic veins, cutaneous branches of the radial and ulnar nerves
the ulnar nerve and ulnar artery in the hand are bound by a slip of fascia and pass where?
lateral to the pisiform bone
the hand is supplied by branches of which arteries?
radial and ulnar arteries
the radial nerve in the hand only has cutaneous branches and supply what?
lateral aspect of the dorsum of the hand and dorsal portion of the 1-4 digits
what is the cutaneous supply of the median nerve in the hand?
lateral part of the palmar surface of the hand
what is the cutaneous supply of the ulnar nerve of the hand?
medial aspect of the hand (both palmar and dorsal)
what is the motor supply of the median nerve of the hand?
ABductor pollicis BREVIS
opponens pollicis
half of flexor pollicis brevis
1st and 2nd lumbricals
what is the MOTOR supply of the ulnar nerve in the hand?
abductor digiti minimi flexor digiti minimi opponens digiti minimi 3rd and 4th lumbricals interossei palmar brevis and half of flexor pollicis brevis
the branches of the radial and ulnar arteries fuse to form what?
superficial and deep palmar arches of the hand
the princeps pollicis is a metacarpal branch that comes off where to which digit?
it comes off the arches and goes to the first digit
the radialis indicis artery goes where?
to the 2nd digit
