Vasculature MD3 Flashcards

1
Q

Subclavian aa

A

R branches off brachiocephalic trunk, L branches off aortic arch

  • branches include: thyrocervical, internal thoracic, vertebral, costocervical, dorsal scapular
  • becomes the axillary aa after passing rib 1
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2
Q

Suprascapular aa

A

from thyrocervical aa (subclavian aa)

passes over suprascapular ligament (over scapular notch)

supplies supraspinatus? as well as various other sites

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3
Q

Axillary aa

A

subclavian aa becomes axillary aa after passing rib 1

axillary aa becomes brachial aa after passing lower border of teres major

3 segments split up by pec minor (1 medial, 2 posterior, 3 lateral)

1- superior thoracic

2- thoracoacromial, lateral thoracic

3- subscapular, ant & post circumflex humeral

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4
Q

Superior Thoracic aa

A
  • branch off 1st segment of axillary aa
  • supplies 1st & 2nd intercostal spaces, superior portion of serratus anterior
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5
Q

Thoracoacromial aa

A
  • 2nd segment (first branch) of axillary aa
  • 4 branches: pectoral, deltoid, acromial, clavicular
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6
Q

Lateral Thoracic aa

A

2nd segment (second branch) of axillary aa

  • supplies lateral structures of thorax & breast (serratus ant, pec major, intercostals)
  • runs along with long thoracic nn?
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7
Q

Anterior & Posterior Circumflex Humeral aa

A
  • 3rd segment of axillary aa
  • encircle surgical neck of humerus anastomosing laterally, larger posterior branch located in quadrangular space
  • anterior supplies shoulder
  • posterior supplies GH joint, deltoid, teres major & minor, long head of triceps?
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8
Q

Subscapular aa

A
  • 3rd segment of axillary aa
  • divides into circumflex scapular (supplies dorsal scapular muscles) and thoracodorsal (supplies lats)
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9
Q

Circumflex Scapular aa

A
  • branch off subscapular aa
  • supplies dorsal scapular muscles
  • travels through triangular space/medial triangular space
  • anastomoses with suprascapular aa in infraspinous fossa
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10
Q

Thoracodorsal aa

A
  • branches off subscapular aa
  • supplies latissimus dorsi
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11
Q

Basilic vv

A

drains to axillary vv, which drains to subclavian vv

superficial

drains arm, forearm, hand

sometimes used in AV fistula creation for hemodialysis

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12
Q

Cephalic vv

A

communicates w/ basilic vv via median cubital vv

runs through deltopectoral groove to drain into axillary vv

used for IV access

superficial

drains hand, forearm, arm

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13
Q

Deep artery of arm/Profunda brachii aa

A

branch off of brachial aa just below teres major,

runs w/ radial nn along radial groove in posterior humerus

supplies deltoid and triceps brachii

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14
Q

Brachial aa

A

anterior compartment

name change from axillary aa after teres major

runs w/ median nn

splits into radial & ulnar aa

supplies biceps & triceps brachii, coracobrachialis (major artery of arm)

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15
Q

Ulnar aa

A

bifurcation of brachial aa

-> common interosseus, dorsal & palmar carpal, primarily superficial palmar arch (some deep)

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16
Q

Radial aa

A

bifurcation of brachial aa

branches: radial recurrent, primarily deep palmar arch (some superficial), dorsal & palmar carpal

17
Q

Common Interosseous aa

A

branch off ulnar aa just after radial tuberosity, splits into anterior & posterior interosseus aa

18
Q

Posterior Interosseous aa

A

branch off of common interosseus aa (ulnar aa)

runs posterior to interosseous membrane, then distally b/w superficial & deep posterior forearm muscles supplying extensors

19
Q

Superficial & Deep Palmar Arches

A

superficial mainly supplied by ulnar aa, deep mainly by radial aa

superficial arch is more distal, while deep is more proximal

-the two anastomose

20
Q

Common Palmar Digital aa

A

branches off superficial palmar arch (ulnar aa)

three arteries pass distally onto lumbricals

21
Q

Proper Palmar Digital aa

A

2 branches off of each common palmar digital aa

run along sides of 2-5th phalanges to supply skin of fingers and finger tips

22
Q

Perforating branches/aa

A

branches off of deep palmar arch (radial nn)

three branches cross b/w 2-4th interosseous spaces to anastomose w/ dorsal metacarpal aa

23
Q

Femoral Artery

A

continuation of external iliac aa after inguinal ligament, thru femoral triangle, into adductor canal

  • femoral pulse inferior to midpoint of inguinal ligament
  • vulnerable to injury d/t superficial position in triangle

branches:

superficial epigastric (upward superficially to umbilicus)

superficial circumflex iliac (lateral, parallel to inguinal ligament)

superficial external pudendal (-> scrotum)

deep femoral (profunda femoris): off of femoral aa in triangle, descends in front of pectineus but behind adductor magnus, gives rise to medial & lateral femoral circumflex aa, supplies adductor magnus & hamstring in adductor canal

24
Q

Anterior Tibial aa.

A

originates from popliteal aa, runs through interosseus membrane, becomes dorsal aa of the foot

-supplies Tom Dick Harry (tibialis anterior, extensord digitorum longus, extensor hallucis longus) & peroneus tertius (anterior compartment of leg)

25
Q

Perforating Branches of Anterior Tibial & Peroneal aa

A

supply lateral compartment of leg (peroneus longus & brevis)

26
Q

Posterior Tibial aa

A

continuation of popliteal aa

splits into peroneal aa (supplies popliteus & lateral compartment of leg)

runs deep to flexor retinaculum, supplies posterior compartment & foot (splits into medial & lateral plantar)

27
Q

Dorsal Artery of Foot

A

branch off of anterior tibial aa,

supplies forefoot, “dorsalis pedis”

runs anterior and b/w malleoli & EHL & EDL, inferior to ext retinaculum

Lateral Tarsal aa

branch off dorsal aa, inferior to EDB (supplies it along w/ tarsals & joints)

Arcuate aa

along bases of metatarsals 2-4 via dorsal metatarsal aa. (1st dorsal metatarsal aa supplies 1st digit)

28
Q

Plantar Artery of Foot

A

branch off of posterior tibial aa.

runs deep to abductor hallucis

splits into medial & lateral plantar aa.

medial plantar aa.

supplies muscles of great toe, skin on medial side

lateral plantar aa.

runs b/w FDB & QP

gives rise to deep plantar arch across tarsals, supplies muscles, skin, fascia of sole of foot

29
Q

Arteries Near Hip Joint

A

Medial & Lateral Circumflex Femoral aa

-off deep femoral aa (branch of femoral aa)

Artery to head of femur

30
Q

Popliteal aa

A
  • continuation of femoral aa after adductor hiatus (adductor magnus) running to popliteal fossa
  • splits into anterior & posterior tibial aa after popliteus muscle
  • superior lateral & medial genicular

-inferior lateral & medial genicular

-descending genicular

-branch off femoral aa just prior to adductor hiatus, splits into an articular branch (anastomosis around knee) & saphenous branch (skin of medial knee)

31
Q

Branches of popliteal aa

A

popliteal aa splits into anterior & posterior tibial aa after popliteus muscle

  • anterior tibial (anterior leg)
  • posterior tibial (posterior leg (superficial calf, deep calf, plantar foot via lateral & medial plantar aa.))

peroneal aa branches off of posterior tibial

-supplies the lateral leg (peroneus longus & brevis)

32
Q

overview of lower extremity aa

A