axilla lateral cervical triangle

Question 1

the pectoral region osteology:

Answer 1

clavicles
sternum
ribs
scapula

Question 2

3 parts of the sternum

Answer 2

manubrium
body
xiphoid

Question 3

what does the fascia of the pectoral region do? (4)

Answer 3

defines borders
invests muscles (covers)
creates potential spaces
consists of superficial and deep layers

Question 4

what makes up the superficial fascia of the pectoral region? (3)

Answer 4

platysma
supraclavicular nerves
anterior and lateral branches of intercostal nerves

Question 5

what are the borders of the deltopectoral (clavipectoral) triangle? (3)

Answer 5

deltoid
pectoralis major
middle 1/3 of clavicle

Question 6

what are the contents of the deltopectoral (clavipectoral) triangle? (3)

Answer 6

cephalic vein
deltopectoral lymph nodes
deltoid branch of thoracoacromial A

Question 7

what does the clavipectoral fascia do? (4)

Answer 7

invests subclavius and pectoralis minor
attatches to clavicle and anterior thoracic wall
cephalic vein, thoracoacromial artery, and lateral pectoral nerves pierce it
becomes suspensory ligament of axilla

Question 8

Muscles of the pectoral region are innervated by?

Answer 8

the ventral rami of spinal nerves via branches of the brachial pexus

Question 9

Muscles of the pectoral region include? (4)

Answer 9

pectoralis major
pectoralis minor
subclavius
serratus anterior

Question 10

Superficial cervical fascia contains: (3)

Answer 10

platysma muscle
superficial veins
cutaneous nerves

Question 11

prevertebral fascia covers:

Answer 11

muscles of the lateral triangle

Question 12

prevertebral fascia extends:

Answer 12

around anterior surface of the cervical vertebrae across anterior midline

Question 13

boundaries of triangle: anterior

Answer 13

posterior border of the sternocleidomastoid

Question 14

boundaries of triangle: posterior

Answer 14

anterior border of the trapezius

Question 15

boundaries of triangle: inferior

Answer 15

clavicle

Question 16

boundaries of triangle: roof (3)

Answer 16

skin
superficial layer of deep cervical fascia (investing fascia)
splits to enclose

Question 17

prevertebral fascia covers muscular floor consisting of: (6)

Answer 17

splenius capitis
levator scapulae
scalenus posterior
scalenus medius
scalenus anterior
omohyoid

Question 18

nerves and vessels of triangle: nerves (3)

Answer 18

lesser occipital (C2)
supraclavicular (C3,4)
accessory (CN XI)

Question 19

nerves and vessels of triangle: arteries (5)

Answer 19

occipital artery
transverse cervical artery
subclavian vein 
subclavian artery
external jugular vein

Question 20

spinal accessory nerve: spinal root (2)

Answer 20

arises from C1-C5

fibers pass superiorly through foramen magnum and join cranial root

Question 21

spinal accessory nerve: cranial root

Answer 21

arises from medulla

Question 22

spinal accessory nerve: spinal root innervates? (2)

Answer 22

sternocleidomastoid

trapezius

Question 23

boundaries of axilla base: anterior

Answer 23

pectoralis major muscle

Question 24

boundaries of axilla base: posterior

Answer 24

latissimus dorsi muscle

Question 25

boundaries of axilla base: medial

Answer 25

thoracic wall

Question 26

boundaries of axilla base: lateral

Answer 26

humerus

Question 27

boundaries of axilla apex: anterior

Answer 27

clavicle

Question 28

boundaries of axilla apex: posterior

Answer 28

superior border of the scapula

Question 29

boundaries of axilla apex: medial

Answer 29

first rib

Question 30

boundaries of axilla base: 4 parts

Answer 30

skin and superficial fascia anterior axillary fold posterior axillary fold chest wall

Question 31

anterior axillary fold =

Answer 31

pectoralis major

Question 32

posterior axillary fold = (2)

Answer 32

latissimus dorsi | teres major

Question 33

chest wall (base of axilla) =

Answer 33

serratus anterior

Question 34

boundaries of axilla: 4 parts to anterior wall

Answer 34

clavicle subclavius pectoralis major pectoralis minor

Question 35

boundaries of axilla: 4 parts to posterior wall

Answer 35

scapula subscapularis latissimus dorsi teres major

Question 36

boundaries of axilla: lateral structures (3)

Answer 36

``` intertubercular sulcus (bicipital groove) tendon of long head of biceps coracobrachialis tendon ```

Question 37

contents of axilla: great vessels (3)

Answer 37

axillary vein and artery cephalic vein and basilic vein axillary lymph nodes

Question 38

contents of axilla: nerves (3)

Answer 38

long thoracic nerve cords of brachial plexus proximal ends of terminal nerves of brachial plexus