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MY skin/musculoskeletal > Week2Anatomy > Flashcards

Week2Anatomy Flashcards

1
Q

What are the 5 spinal nerves that contribute to the brachial plexus?

A

C5, 6, 7, 8 & T1

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2
Q

What spinal nerves contribute to the musculocutaneous branch of the BP?

A

C4, 5, 6, 7

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3
Q

What spinal nerves contribute to the axillary branch of the BP?

A

(off posterior cord) C5, 6

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4
Q

What spinal nerves contribute to the radial branch of the BP?

A

(off posterior cord)

C5, 6, 7, 8, & T1

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5
Q

What spinal nerves contribute to the median branch of the BP?

A

C5, 6, 7, 8, & T1

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6
Q

What spinal nerves contribute to the ulnar branch of the BP?

A

C7, 8, & T1

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7
Q

what does the musculocutaneous nerve innervate in upper arm?

A

coracobrachialis, biceps brachii, & brachialis (anterior compartment)

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8
Q

what does the axillary nerve innervate in upper arm?

A

glenohumeral joint
teres minor
deltoid

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9
Q

what does the radial nerve innervate in upper arm?

A

LOTS! all of posterior compartments of arm & 4arm
all heads of triceps
brachioradialis

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10
Q

what does the median nerve innervate in upper arm?

A

none?

**muscles of anterior 4arm compartment

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11
Q

what does the ulnar nerve innervate in upper arm?

A

none

**flexor carpi ulnaris & ulnar 1/2 of flexor digitorum profundus

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12
Q

Triceps brachii- long head (IOInF)

A

O: infraglenoid tubercle of dcapula
I: proximal end of olecranon of ulna & 4arm fascia
N: Radial nerve (C678)
Fxn: chief extensor of 4arm, resists dislocation of humerus (especially important in adduction of arm)

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13
Q

Triceps Brachii- lateral head (OINF)

A

O: posterior surface of humerus, superior to radial groove
I: proximal end of olecranon of ulna & 4arm fascia
N: Radial C678
F: chief extensor of 4arm & important to adduction

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14
Q

Triceps brachii- medial head (OINF)

A

O: posterior surface of humerus, inferior to radial groove
I: proximal end of olecranon of ulna & 4arm fascia
N: Radial C678
F: chief extensor of 4arm & important to adduction

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15
Q

BIceps Brachii- long head (OINF)

A

O: supralenoid tubercle of scapula
I: tuberosity of radius & 4arm fascia via bicipital aponeurosis
N: Muscu. C567
F: supinates & flexes 4arm

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16
Q

Biceps brachii- short head (OINF)

A

O: tip of coracoid process
I: tuberosity of radius & 4arm fascia via bicipital aponeurosis
N: Muscu. C567 [6]
F: supinates & flexes 4arm,** resists shoulder dislocation

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17
Q

coracobrachialis (OINF)

A

O: tip of coracoid process
I: middle 3rd of medial surface of humerus
N: Musc. C567 [6]
F: help flex & adduct arm; resist dislocation of shoulder

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18
Q

brachialis (OINF)

A

O: distal 1/2 of anterior humeral surface
I: coronoid process & tuberosity of ulna
N: Musc. C56 & Radial C57
F: flexes 4arm in all positions

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19
Q

brachioradialis (OINF)

A

O: proximal 2/3 of supraepicondylar ridge of humerus
I: lateral surface of distal end of radius proximal to styloid process
N: radial nerve C567 [6]
F: weak flxn of 4arm (max when mid-pron8d)

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20
Q

jugular (suprasternal notch)

A

v-like fissure at the top of the sternum (actually the manubrium part of the sternum)
-where vertebral column and sternum meet

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21
Q

sternum (parts)

A

manubrium- where 1st rib attaches
body
xyphoid process

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22
Q

sternal angle

A

fissure directly below the jugular/suprasternal notch

  • brackets the manubrium
  • where 2nd rib joins the sternum
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23
Q

xiphisternal joint

A

where xiphoid process attaches to the bottom of the sternum

-fibrous joint

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24
Q

costal margin

A

represents the inferior surface of the rib cage and is formed by the cartilaginous components of ribs 7 – 10.

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25
Q

scapula (parts)

A 
coracoid process
glenoid cavity (fossa)
supraglenoid tubercle
infraglenoid tubercle
neck
subscapular fossa
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26
Q

Humerus (parts)

A 
head
anatomical neck
surgical neck
greater tubercle
lesser tubercle
intertubercular groove
deltoid tuberosity
radial groove
medial & lateral condyle & epicondyle
radial fossa
coronoid fossa
trochlea
capitulum
olecranon fossa
medial & lateral supracondylar crests
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27
Q

nipple/breast

A

NIPPLE: lies approx. over the 4th interostal space
–N: 4th intercostal nerve (stems from T4)
BREAST:
–BS:small branches of the axillary artery supply the upper or superior portions of the breast, lateral thoracic artery that supplies much of the lateral portion of the breast, intercostal arteries and the internal thoracic artery send perforating branches from deep into the breast tissue.
-Venous drainage accompanies the arterial supply.

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28
Q

lactiferous ducts & sinuses

A
  • sinuses are last step before exiting the nipple (for milk or fluid)
  • lactiferous dcts lead this fluid to the sinuses
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29
Q

suspensory ligaments (of Spence)

A

slight thickening of CT that attaches breast to the chest wall
support!

30
Q

cephalic vein

A

begins as tributaries & passes rostrally on the lateral side of the forearm and arm.
-passes between the deltoid and pectoralis major to the deltopectoral triangle where is passes deep to connect with the axillary vein

31
Q

pectoralis major muscle

A

O: medial two-thirds of the clavicle, the sternum and the anterior surface of the ribs.
I: humerus lateral to the intertubular sulcus.
N: medial and lateral pectoral nerves.
FXN: flexion of the humerus, adducts the humerus, rotates the humerus medially, keeps the arm attached to the trunk of the body.

32
Q

thoracromial artery

A
  • close to cephalic vein, medial to pec minor

- originates from underlying axillary artery

33
Q

medial & lateral pectoral nerves

A

medial: Originates from medial cord of BP
- innervates both pec major & minor
lateral: originates from lateral cord of BP
- innervates pec major only!

34
Q

deltoid muscle

A

O: spine of the scapula, the acromion and the lateral third of the clavicle
I: deltoid tubercle on the lateral side of the humerus. N: axillary nerve.
FXN: Main one is aBduction

35
Q

pectoralis minor muscle

A

I: coracoid process
O: intercostals/ribs of 3 4, & 5?
N: medial pectoral nerve
FXn: depresses the point of the shoulder, draws scapula inferior and medial towards the thorax

36
Q

axillary fascia

A

fascia around the axillary region

37
Q

clavipectoral fascia

A
  • extends from the clavicle to the axillary fascia,
  • encircles the pectoralis minor muscle.
  • lower part is referred to as the suspensory ligament
38
Q

which ribs are floating? (not attached to sternum)

A

11th & 12th

39
Q

which 3 muscles attach to the coracoid process?

A

pec minor
coracobrachialis
short head of the biceps brachii

40
Q

what muscle attaches at the supraglenoid tubercle?

A

long head of biceps brachii

41
Q

what muscle attaches at the infraglenoid tubercle?

A

long head of the triceps

42
Q

what 3 muscles attach on the greater tubercle of the humerus?

A

supraspinatus
infraspinatus
teres minor

43
Q

what muscle attaches on the lesser tubercle of the humerus?

A

subscapular muscle

44
Q

what muscle/tendon runs through the intertubercular groove and where does it attach?

A

long head of the biceps brachii

-attaches proximally to the supraglenoid tubercle

45
Q

What importance does the anatomical neck of the humerus have?

A
  • site for an epiphyseal plate

- site for attachment of the joint capsule

46
Q

where will the majority of lymph flow in/from the breast?

A

anterior/pectoral lymph nodes

–most likely site of metastasis???

47
Q

acromioclavicular joint & ligament

A

junction between scapula & acromion

48
Q

coracoclavicular ligament

A

connects clavicla and coracoid process

49
Q

coracoacromial ligament

A

connects coracoid process & acromion

50
Q

intercostobrachial nerve

A

comes from the floor of the axilla

-from thoracic wall near mid-axillary line as cutaneous branch of T2

51
Q

superior thoracic artery

A

1st artery to branch of the axillary artery

52
Q

thoracromial trunk

A

2nd group of arteries to branch of axillary artery

53
Q

lateral thoracic artery

A

3rd artery to branch of axillary

54
Q

subscapular artery

A

4th offshoot of axillary artery

-splits into circumflex scapular artery & thoracodorsal artery

55
Q

circumflex scapular artery

A

branch of the subscapular artery that dives posteriorly to encircle the scapula

56
Q

thoracodorsal artery

A

branch of the subscapular artery that innervates the: LATISSIMUS DORSI

57
Q

anterior circumflex humeral artery

A

5TH BRANCH OFF THE AXILLARY—VERY CLOSE W/ THE PCHA

58
Q

posterior circumflex humeral artery

A

6th branch off the axillary artery (last)

-passes through the quadrangular space to circumnavigate the humerus

59
Q

axillary sheath

A

fascial sleeve from base of the neck that surrounds the cords of the BP & axillary artery

60
Q

what structure lies outside the axillary sheath [that you would normally think is inside]?

A

axillary vein (doesn’t run directly with its “sister artery in this case

61
Q

medial & lateral intermuscular septa

A
  • extend inward from the brachial fascia to attach to the humerus
  • divide the arm into two compartments, an anterior flexor compartment and a posterior extensor compartment
62
Q

deep brachial artery

A
  • lies in the radial groove w/ radial nerve

- first branch off the brachial artery

63
Q

lateral cutaneous nerve of the forearm

A

musculocutaneous nerve exits from the lateral border of the biceps and continues into the forearm as the lateral cutaneous nerve of the forearm (lateral antebrachial cutaneous nerve).

64
Q

brachial artery

A

accompanies the median nerve in the arm!!
-begins at the lateral border of the teres major muscle =continuation of the axillary artery
3 major branches:
1. deep brachial artery runs w/ radial nerve
2. superior ulnar collateral artery w/ ulnar nerve and passes behind the medial epicondyle.
3. smallest branch is the inferior ulnar collateral artery. It supplies the area of the elbow joint and anastomoses with recurrent branches of the ulnar and radial arteries.

65
Q

superior ulnar collateral artery

A

2nd branch off brachial artery

-runs w/ ulnar nerve behind medial epicondyle

66
Q

inferior ulnar collateral artery

A

smallest branch is the inferior ulnar collateral artery. It supplies the area of the elbow joint and anastomoses with recurrent branches of the ulnar and radial arteries.

67
Q

bicipital aponeurosis

A

not done w/ card

68
Q

radial & ulnar arteries

A

not done w/ card

69
Q

radial nerve (superficial & deep branches)

A

not done w/ card

70
Q

transverse humeral ligament

A

not done w/ card

71
Q

subacromial/subdeltoid bursa

A

not done w/ card

MY skin/musculoskeletal (4 decks)

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