2.2 UL. PECTORIAL GRIDLE, AXILLA

Question 1

The pectoral region is located

Answer 1

on the anterior aspect of the thorax

Question 2

Cutaneous nerves of the pectoral region are

Answer 2

Anterior cutaneous nerves (T2-T6)

Lateral cutaneous nerve (T3-T6)

Intercostobrachial nerve

Supraclavicular nerves

Question 3

Breast originate between

Answer 3

Stern Al angle 2 rib and level of sixth rib

Question 4

• Which of the following muscles does not form deep relation of the mammary gland?
• a. Pectoralis major
• b. Pectoralis minor
• c. Serratus anterior
• d. External oblique muscle of abdomen

Answer 4

B

Question 5

Arterial supply of the brist includes

Answer 5

1 Internal thoracic artery, (subclavian artery).
2 The lateral thoracic, superior thoracic and acromiothoracic (thoracoacromial) (axillary Artery).
3 Lateral branches of the posterior intercostal arteries.

Question 6

Which of the following arteries does not supply the mammary gland?
a. Superior thoracic
b. Thoracodorsal branch of subscapular artery c. Lateral thoracic artery
d. Thoracoacromial artery

Answer 6

B

Question 7

Veins of mammary gland include

Answer 7

• The veins follow the arteries.
• Anastomotic venous circle around nipple
• 1 The superficial veins drain into the internal thorac ic vein and into the
superficial veins of the lower part of the neck.
• 2 The deep veins drain into the axillary and posterior intercostal veins.

Question 8

Nerves of the breast are

Answer 8

anterior and lateral cutaneous branches of the 4th to 6th intercostal nerves.

Question 9

About 75% of the lymph from the breast drains into the … ….;

Answer 9

Axillary nodes

Question 10

20% of breast lymph drains into the … …nodes; and 5% into the …. …nodes

Answer 10

Anterior thoracic
Posterior intercostal

Question 11

communicate with the

Answer 11

subdiaphragmatic and subperitoneal lymph plexuses

Question 12

Deep fascia of breast is

Answer 12

Pictorial fascia

Question 13

Pictorial fascia is attached superiorly to the …., and anteriorly to the ….. Superolaterally, it passes over the… .. and deltopectoral groove to become continuous with the fascia covering the deltoid. Inferolaterally, the fascia curves round the inferolateral border of the … …to become continuous with the axillary fascia. Inferiorly, it is continuous with the fascia over the thorax and the rectus sheath.

Answer 13

Clavicle
Sternum
Infraclavicular fossa
Pectoralis major

Question 14

Pectoral muscles are

Answer 14

pectoralis major,  pectoralis minor,  subclavius, and  serratus anterior.

Question 15

a large, powerful, fan- shaped (triangular) muscle.
• It is attached by means of two heads to the front of the chest

Answer 15

Pectoralis major

Question 16

Which structure

arises from the medial half of the clavicle

Answer 16

Clavicular head

Question 17

Which structure

is attached to the anterior surface of the sternum and to the upper six costal cartilages

Answer 17

Sterno-costal head

Question 18

The muscle fibers of pectoralis major converge to be inserted into the

Answer 18

lateral lip of the intertubercular groove of the humerus

Question 19

Nerve supply of pectoralis major includes

Answer 19

Lateral/ medial Pectorial nerve