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Anatomy > B1 W2 Brachial Plexus > Flashcards

B1 W2 Brachial Plexus Flashcards

1
Q

Quadrangular space

A

Posterior humeral circumflex artery

Axillary nerve

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2
Q

Triangular space

A

scapular circumflex arteries

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3
Q

Triangle interval

A

Profunda brachii artery and radial nerve

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4
Q

C6 dermatome

A

thumb side; “6th shooter”

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5
Q

C7 dermatome

A

index finger and middle finger

“show em’ the sevens!”

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6
Q

C8 dermatome

A

ring finger and little finger

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7
Q

C1 dermatome

A

There is none; it’s in the brain

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8
Q

C5, T1 dermatomes

A

Work on anterior side of the arm, not the hand

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9
Q

What nerve pieces through the coracobrachialis?

A

Musculocutaneous nerve

Innervates biceps brachii and brachiallis too, then becomes only sensory and continues on as lateral cutaneous nerve of forearm

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10
Q

Anterior compartment of arm

A

Flexors

Coracobrachialis, biceps brachii, brachialis

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11
Q

Posterior compartment of arm

A

Extensors

Triceps brachii and anconeus

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12
Q

Axillary lymph nodes

A 
Humeral/lateral (drain upper limb)
Central
Subscapular
Pectoral (drain breast)
Apical
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13
Q

Veins of axilla

A 
Cephalic vein
Subclavian vein
Basilic vein
Brachial vein
Axillary vein
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14
Q

Cephalic vein

A

goes from thumb, eventually ends at axilary vein; lies in deltopectoral triange with deltoid branch of the thoracoacromial artery

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15
Q

Axillary vein

A

When subclavian vein reaches 1st rib

Continues on until it branches off as basilic and brachial vein

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16
Q

Suprascapular artery and nerve

A

Criss-cross, artery is above nerve

Army above navy

17
Q

Contents of axillary

A

a. Axillary artery and branches
b. Axillary vein and tributaries
c. Brachial plexus and branches
d. Axillary lymph nodes

18
Q

Arterial supply of breast

A

from thoracoacromial branches, the lateral thoracic artery, internal thoracic artery and posterior intercostal arteries

19
Q

Lymphatic system

A

Upper right quadrant (25%): drains to right lymphatic duct

Rets of body: drains to thoracic duct

20
Q

Thoracic duct

A
  1. empties into bifurcation of internal jugular vein
  2. Comes from thorax into subclavian vein
  3. Drains inferior to superior
21
Q

Breast lymphatics: “sentinel node”

A

anterior pectoral nodes

22
Q

Three methods of lymphatic drainage of breast

A

Method 1: pectoral – central – apical – clavicular – main lymphatic route

Method 2: parasternal lymph nodes

Method 3: deep abdominal lymph nodes

23
Q

Blockage of lymphatic system

A

Elephantitis

24
Q

Peau d’ Orange

A

When get a tumor on breast, Cooper’s ligaments won’t stretch, will get “peau d’ orange” appearance

25
Q

Structure of breast

A

Fat, gland lobules, suspensory ligaments of Cooper (from posterior to surface of breast) help support breast tissue

Modified sweat gland

26
Q

Location of breast

A

deep pectoral fascia=mamillary glands
Subcutaneous tissue pectoral region
2nd-6th rib medially and laterally into axilla

27
Q

Retromammary space

A

Between breast and pectoral tissue

Allows movement of breast on thoracic wall

28
Q

Elephantiasis

A

filarial blockage of lymph nodes

29
Q

Spinal nerve plexuses

A

Cervical plexus
Brachial plexus
Lumbar plexus
Sacral plexus

MOST INJURIES BRACHIAL!

30
Q

Erb’s Paralysis/Waiter’s Tip Position

A

Upper trunk brachial plexus damage
Injuries result from C5/C6 nerves
One side of body
Shoulder down, head pushed away, weak flexion, wrist loose

31
Q

Klumpke’s Paralysis

A

Lower trunk brachial plexus damage
Symptoms due to injuries involving C8/T1 nerves
Claw hand, intrinsic hand muscles gone

32
Q

Crutch palsy

A

Excessive/prolongued pressure on radial nerve

Loss of extension at elbow and/or wrist drop

33
Q

Anastamosis of Upper Limb–2nd Part Block of Axillary, all

A

thoracoacromial deltoid artery
dorsal scapular
suprascapular

34
Q

Anastamosis of Upper Limb–2nd part block of axillary, deltoid

A

thoracoacromial artery to deltoid artery to posterior circumflex humeral back to axillary

35
Q

Anastamosis of Upper Limb–2nd part block of axillary, dorsal scapular

A

dorsal scapular, underneath levator scapular, travels down to infraspinatus, teres minor, teres major; into infraspinous fossa, starts to fill up circumflex scapular, back down

36
Q

Anastamosis of Upper Limb–2nd part block of axillary, sub scapular

A

–suprascapular, spine of glenoid notch, glenoid cavity, infraspinous fossa, circumflex scapular

37
Q

Anastamosis of Upper Limb–what if 1st part block?

A

Dorsal scapular and suprascapular would still work

38
Q

Anastamosis of Upper limb–brachial artery block

A

Amputation :(

Anatomy (8 decks)

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