Lecture 5

Question 1

list the bone of the pectoral region

Answer 1

clavicle, sternum, ribs and scapula

Question 2

3 parts of sternum

Answer 2

manubrium, body, xiphoid

Question 3

what are the functions of the fascia of pectoral region

Answer 3

1. defines borders 2. invests muscle 3. creates potential spaces 4. has superficial and deep layers

Question 4

superficial fascia vs deep

Answer 4

Superficial = contains superclavicular nerves and anterior/lateral branches of the intercostal nerves

Deep = prevertebral fascia = around anterior surface of cervical vertebra +across anterior midline — deep cervical fascia , costocoracoid membrane, pectoral fascia, suspensory ligament of axilla, axillary fascia

Question 5

structures of superficial fascia

Answer 5

superclavicular nerves and anterior/lateral branches of the intercostal nerves covers pectoralis major and minor.

Question 6

list the borders of the deltopectoral triangle

Answer 6

Deltoid (anterior) , pectoralis major and middle 1/3 of clavicle

Question 7

content of delta pectoral triangle

Answer 7

cephalic vein, deltopectoral lymph nodes, deltoid branch of thoroco-acromial artery

Question 8

functions / attachemnt of clavipectoral fascia

Answer 8

1. invests (covers) subclavius and pectoralis major
2. attaches to clavicle and anterior thoracic wall

Question 9

list structures that pierce clavipectoral fascia

Answer 9

cephalic vein, thoroacocromial, and lateral pectoral nerves

Question 10

what is the relationship between the suspensory ligament of the axilla and the clavipectoral fascia

Answer 10

clavipectoral fascia later becomes the suspensory ligament of the axilla

Question 11

list muscles of pectoral region

(attachements + innervation)

Answer 11

pectoralis major

pectoralis minor

subclavius

serratus anteiror

• all intervated by ventral spinal nerves vs brachial plexus

Question 12

Clavipectoral Fascia content

Answer 12

cephalic vein, thoroacocromial, and lateral pectoral nerves

Question 13

superfical cervial fasica + contents

Answer 13

Platysma muscles

superfical vein

sutaneous nerves

Question 14

boundries of lateral cervical triangle

Answer 14

anterior =posterior border of the sternocledidomastoid (STC)

Posterior = anterior border of the trapezius

Inferior = clavicle

Roof = skin, superfical layer of the deep cervical fascia, (investing fascia) , trapezius, sternocleidomastoid

Question 15

muscles of the lateral cervical triangle

Answer 15

splenius capitis

levator scapular

scalenus posterior

scalenus medius

scalenus anteior

Omohyoid

Question 16

vascular and nerve contents of the lateral cervical triangle

Answer 16

External jugular vein

subclavian artery

subclavain vein

asscessory CN 11

occiptal artery

transverse cervical artery

supraclavicular

lesser occipital

Question 17

origins of the spinal root and where it passes through

Answer 17

arise from C1-C5

Fibers pass superiorly through foramen magnum and join cranial root

Question 18

Answer 18

Question 19

origins cranial root and where it passes

Answer 19

arises from medulla

both roots exit through the jugular, foramen and seperate

Question 20

Spinal root innervates

Answer 20

sternocleidomastoid

Trapezius

Question 21

boundries of base of Axilla

Anterior

Posterior

medial

lateral

Answer 21

Anterior - pectoralis major

Posterior -latissimus dorci muscles

Medial -thoracic wall

Lateral -humerus

Question 22

Boundries of Apex of Axilla

Answer 22

Anterior -clavicle

Posterior -suprerior border of the scapula

Medial -first rib

Question 23

Boundries of the Axilla

Answer 23

1. skin/ supperficial fascia
2. anterior axillary fold
3. Posterior axillary fold
4. Chest wall ( serratus anterior)

Question 24

boundries of Posterior axillary fold

Answer 24

latissimus dorci

Teres

Question 25

muscles that make up the posterior axillary fold

Answer 25

1. latissimus dorci 2. Teres major

Question 26

muscles that make up the anterior axillary fold

Answer 26

pectoralis major

Question 27

Anteriore wall of the axilla consist of

Answer 27

clavical subclavius pectoralis major pectoralis minor

Question 28

Posterior wall of Axilla consist of

Answer 28

scapula subscalpularis latissimus dorci teres major

Question 29

Lateral boundries of the Axilla

Answer 29

intertubercular sulcus (bicipital groove) Tendon of long head of biceps Coracobrachialis tendon

Question 30

Contents of Axilla 4 vessels 1 node 3 nerves

Answer 30

Great Vessels : Axillary vein and artery, , Cephaliic vein and basilic vein Axillary lymph nodes (central/peripheral) Nerves: Long thoracic nerve cords of brachial plexus proximal end of terminal nerves of brachial plexus

Question 31

Axillary Sheath

Answer 31

Axilary vein Axillary artery brachial plexus

Question 32

Cords of Axilla

Answer 32

Lateral, Medial , Posterior Choroid