Lecutre 5: Axilla, Lateral Cervical Triangle

Question 1

Functions of fascia of pectoral region

Answer 1

Defines borders
Invests muscles
Creates potential spaces

Question 2

Inferior boundary of LCT

Answer 2

Clavicle

Question 3

Medial boundary of apex of axilla

Answer 3

First rib

Question 4

CN XI (spinal accessory nerve) Spinal root arises from

Answer 4

C1-C5

Fibers pass superiorly through foramen magnum and join cranial root

Question 5

CN XI spinal root innervates the

Answer 5

Sternocleidomastoid

Trapezius

Question 6

Superficial fascia of pectoral region consists of

Answer 6

Platysma
Supraclavicular nerves
Anterior and lateral branches of intercostal nerves

Question 7

Vascular content of LCT

Answer 7

Occipital artery
Transverse cervical artery
Subclavian vein
Subclavian artery
External jugular vein

Question 8

Bones of Pectoral region

Answer 8

Clavicles
Sternum (Manubrium, Body, Xiphoid)
Ribs
Scapula

Question 9

Vessels of axilla

Answer 9

Axillary vein and artery
Cephalic and basilic vein
Axillary lymph nodes

Question 10

Clavipectoral fascia turns into the

Answer 10

Suspensory ligament of axilla

Question 11

Posterior boundary of LCT

Answer 11

Anterior border of trapezius

Question 12

Borders of Deltopectoral (clavipectoral) triangle consist of

Answer 12

Deltoid
Pectoralis major
Middle 1/3 of clavicle

Question 13

Anterior boundary of LCT (lateral cervical triangle)

Answer 13

Posterior border of sternocleidomastoid

Question 14

Nerves of axilla

Answer 14

Long thoracic nerve
Cords of brachial plexus
Proximal ends of terminal nerves or brachial plexus

Question 15

What pierces the Clavipectoral fascia

Answer 15

Cephalic vein
Thoracoacromial artery
Lateral pectoral nerves

Question 16

Medial boundary of base of axilla

Answer 16

Thoracic wall

Question 17

Anterior boundary of base of axilla

Answer 17

Pectoralis major muscle

Question 18

Nerve content of LCT

Answer 18

Lesser occipital
Supraclavicular
Cranial nerve XI (spinal accessory nerve)

Question 19

Anterior wall of axilla consists of

Answer 19

Clavicle
Subclavius
Pectoralis major
Pectoralis minor

Question 20

Posterior wall of axilla consists of

Answer 20

Scapula
Subscapularis
Latissimus dorsi
Teres major

Question 21

Posterior boundary of apex of axilla

Answer 21

Superior border of scapula

Question 22

Posterior boundary of base of axilla

Answer 22

Latissimus dorsi muscle

Question 23

Prevertebral fascia extends

Answer 23

Around anterior surface of cervical vertebrae across anterior midline

Question 24

Prevertebral fascia covers which muscles

Answer 24

Muscles of the lateral cervical triangle

Question 25

Lateral boundary of base of axilla

Answer 25

Humerus

Question 26

Anterior boundary of apex of axilla

Answer 26

Clavicle

Question 27

What innervates the pectoral muscles

Answer 27

Ventral Rami of spinal nerves, via branches of the brachial plexus

Question 28

Lateral structures of axilla

Answer 28

Intertubercular sulcus Tendon of long head of biceps Coracobrachialis tendon

Question 29

Base of axilla consists of

Answer 29

Skin & superficial fascia Anterior axillary fold Posterior axillary fold Chest (thoracic) wall

Question 30

CN XI cranial root arises from

Answer 30

The medulla

Question 31

Prevertebral fascia covers muscular floor consisting of (6):

Answer 31

``` Splenius capitis Levator scapulae Omohyoid Scalenus posterior Scalenus medius Scalenus anterior ```

Question 32

Contents of Superficial cervical fascia

Answer 32

Platysma muscle Superficial veins Cutaneous nerves

Question 33

Clavipectoral fascia invests:

Answer 33

Subclavius | Pectoralis minor

Question 34

Clavipectoral fascia attaches to:

Answer 34

Clavicle | Anterior thoracic wall

Question 35

Muscles of posterior axillary fold

Answer 35

Latissimus dorsi | Teres major

Question 36

Contents of Deltopectoral (clavipectoral) triangle

Answer 36

Cephalic Vein Deltopectoral lymph nodes Deltoid branch of thoracoacromial artery

Question 37

Roof of LCT

Answer 37

Skin | Superficial layer of deep cervical fascia

Question 38

Muscle of anterior axillary fold

Answer 38

Pectoralis major

Question 39

Muscles of pectoral region include

Answer 39

Pectoralis major Pectoralis minor Subclavius Serratus anterior