axilla lateral cervical triangle Flashcards
the pectoral region osteology:
clavicles
sternum
ribs
scapula
3 parts of the sternum
manubrium
body
xiphoid
what does the fascia of the pectoral region do? (4)
defines borders
invests muscles (covers)
creates potential spaces
consists of superficial and deep layers
what makes up the superficial fascia of the pectoral region? (3)
platysma
supraclavicular nerves
anterior and lateral branches of intercostal nerves
what are the borders of the deltopectoral (clavipectoral) triangle? (3)
deltoid
pectoralis major
middle 1/3 of clavicle
what are the contents of the deltopectoral (clavipectoral) triangle? (3)
cephalic vein
deltopectoral lymph nodes
deltoid branch of thoracoacromial A
what does the clavipectoral fascia do? (4)
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
Muscles of the pectoral region are innervated by?
the ventral rami of spinal nerves via branches of the brachial pexus
Muscles of the pectoral region include? (4)
pectoralis major
pectoralis minor
subclavius
serratus anterior
Superficial cervical fascia contains: (3)
platysma muscle
superficial veins
cutaneous nerves
prevertebral fascia covers:
muscles of the lateral triangle
prevertebral fascia extends:
around anterior surface of the cervical vertebrae across anterior midline
boundaries of triangle: anterior
posterior border of the sternocleidomastoid
boundaries of triangle: posterior
anterior border of the trapezius
boundaries of triangle: inferior
clavicle
boundaries of triangle: roof (3)
skin
superficial layer of deep cervical fascia (investing fascia)
splits to enclose
prevertebral fascia covers muscular floor consisting of: (6)
splenius capitis levator scapulae scalenus posterior scalenus medius scalenus anterior omohyoid
nerves and vessels of triangle: nerves (3)
lesser occipital (C2)
supraclavicular (C3,4)
accessory (CN XI)
nerves and vessels of triangle: arteries (5)
occipital artery transverse cervical artery subclavian vein subclavian artery external jugular vein
spinal accessory nerve: spinal root (2)
arises from C1-C5
fibers pass superiorly through foramen magnum and join cranial root
spinal accessory nerve: cranial root
arises from medulla
spinal accessory nerve: spinal root innervates? (2)
sternocleidomastoid
trapezius
boundaries of axilla base: anterior
pectoralis major muscle
boundaries of axilla base: posterior
latissimus dorsi muscle
boundaries of axilla base: medial
thoracic wall
boundaries of axilla base: lateral
humerus
boundaries of axilla apex: anterior
clavicle
boundaries of axilla apex: posterior
superior border of the scapula
boundaries of axilla apex: medial
first rib
boundaries of axilla base: 4 parts
skin and superficial fascia
anterior axillary fold
posterior axillary fold
chest wall
anterior axillary fold =
pectoralis major
posterior axillary fold = (2)
latissimus dorsi
teres major
chest wall (base of axilla) =
serratus anterior
boundaries of axilla: 4 parts to anterior wall
clavicle
subclavius
pectoralis major
pectoralis minor
boundaries of axilla: 4 parts to posterior wall
scapula
subscapularis
latissimus dorsi
teres major
boundaries of axilla: lateral structures (3)
intertubercular sulcus (bicipital groove) tendon of long head of biceps coracobrachialis tendon
contents of axilla: great vessels (3)
axillary vein and artery
cephalic vein and basilic vein
axillary lymph nodes
contents of axilla: nerves (3)
long thoracic nerve
cords of brachial plexus
proximal ends of terminal nerves of brachial plexus