Axilla

Question 1

axilla definition

Answer 1

subdermal armpit; densely packed corridor of nerves and vessels traveling b/t torso and upper extremity

Question 2

Four borders of axilla

Answer 2

anterior, posterior, medial, lateral

Question 3

axilla anterior border

Answer 3

pectoralis major and minor

Question 4

axilla posterior border

Answer 4

latissimus dorsi, teres major, long head of triceps and subscapularis

Question 5

axilla medial border

Answer 5

lateral thoracic wall and serratus anterior

Question 6

axilla lateral border

Answer 6

intertubercular groove of the humerus

Question 7

axillary sheath

Answer 7

contains major arteries and nerves to upper extremities, veins and lymphatics draining the extremtities.

Question 8

The axillary sheath is an extension of ____

Answer 8

prevertebral fascia of the cervical region

Question 9

subclavian artery

Answer 9

portion of axillary arteries superior to first rib and in between anterior and middle scalene muscles

Question 10

axillary artery location

Answer 10

lateral border of first rib continuing distally through the axilla to inferior border of teres major muscle

Question 11

brachial artery

Answer 11

axillary artery name inferior to inferior border of teres major

Question 12

Parts of axillary artery

Answer 12

in relation to pectoralis minor (1)proximal to, (2) posterior to, (3) distal to

Question 13

axillary veins

Answer 13

mimic axillary artery branches except cephalic vein

Question 14

cephalic vein junction with axillary vein

Answer 14

cephalic vein drains into axillary vein lateral to first rib

Question 15

Arteries of 2nd portion of the axillary artery (posterior to pectoris minor)

Answer 15

thoracoacromial, lateral thoracic

Question 16

Arteries of 3rd portion of axillary artery (distal to pectoralis minor)

Answer 16

subscapular, anterior and posterior circumflex humeral

Question 17

axillary vein is formed by the merger of ____

Answer 17

brachial and basilic veins

Question 18

subclavian vein

Answer 18

axillary vein, starting at lateral border of 1st rib

Question 19

where does the brachial plexus derive?

Answer 19

ventral rami of C5 to T1

Question 20

Components of the plexus

Answer 20

roots, trunks, divisions, cords, branches

Question 21

Draw the brachial plexis

Answer 21

Question 22

Branches of lateral cord

Answer 22

lateral pectoral nerve, musculocutaneous nerve, lateral root of median nerve

Question 23

Branches of medial cord

Answer 23

medial pectoral nerve, medial branchial cutaneous nerve, medial antebrachial cutaneous nerve, ulnar nerve, medial root of median nerve

Question 24

branches of posterior cord

Answer 24

upper subscapular nerve, thoracodorsal nerve, lower subscapular nerve, radial nerve, axillary nerve

Question 25

Dermatomes of brachial plexus

Answer 25

Question 26

Four nerves that leave brachial plexus proximal to divisions

Answer 26

long thoracic nerve (to serratus anterior), dorsal scapular nerve (to rhomboids and some of levator scapulae), suprascapular nerve (to supraspinatus and infraspinatus)

Question 27

Five major branches that innervate muscles of upper extremity

Answer 27

median, ulnar, radial, axillary, musculocutaneous

Question 28

lymphangitis

Answer 28

inflammation of lymph vessels

Question 29

lymphadenitis

Answer 29

inflammation of lymph nodes

Question 30

lymphadenopathy

Answer 30

lymph node swelling or enlargement whether or not inflammed, may be result of cancer metastases

Question 31

function of one-way valves in lymph system

Answer 31

promote flow only towards central venous system

Question 32

thoracic duct

Answer 32

one of the two major lymphatic channels of body; receives lymphatic drainage from the lower body and left upper quadrant; drains into venous circulation @ junction of left interal jugular and subclavian veins

Question 33

lymph nodes

Answer 33

filter fluid in lymph vessels, site of immunological activity

Question 34

Lymph

Answer 34

clear fluid from interstitial space carried in lymph vessels

Question 35

Chyle

Answer 35

lymphatic fluid from intestines involved in fat digestion