Pectoral Region

Question 1

The costal cartilage of 2nd rib articulates with sternum at.

Answer 1

Sternal angle.

Question 2

Nipple in males lies in.

Answer 2

4th intercostal space just medial to the midclavicular line.

Question 3

Skin above sternal angle is supplied by.

Answer 3

Supraclavicular nerves (C3 and C4)

Question 4

Skin below sternal angle is supplied by.

Answer 4

Anterior and lateral cutaneous branches of 2nd-6th intercostal nerves (T2 and T6)

Question 5

Muscles of pectoral region.

Answer 5

Pectoralis major, pectoralis minor, subclavius, serratus anterior.

Question 6

Largest muscle of pectoral region.

Answer 6

Pectoralis major.

Question 7

Nerve supply of pectoralis major.

Answer 7

Lateral (C5-C7) and medial pectoral (C8 and T1) nerves.

Question 8

Origin of pectoralis major.

Answer 8

Small clavicular head and large stenocostal head.

Question 9

Insertion of pectoralis major.

Answer 9

Lateral lip of intertubular sulcus.

Question 10

Origin of pectoralis minor.

Answer 10

3rd, 4th, 5th rib.

Question 11

Insertion of pectoralis minor.

Answer 11

Medial border and upper surface of corocoid process.

Question 12

Nerve supply of pectoralis minor.

Answer 12

Medial and lateral pectoral nerves.

Question 13

Origin of subclavius muscle.

Answer 13

First rib at costochondral junction.

Question 14

Insertion of subclavius muscle.

Answer 14

Subclavian groove.

Question 15

Nerve supply of subclavian nerve.

Answer 15

Subclavian nerve.

Question 16

Insertion of serratus anterior.

Answer 16

Costal surface of scapula along its medial border.

Question 17

Nerve supply of serratus anterior.

Answer 17

Long thoracic nerve (C5-C7)

Question 18

Boxer’s muscle.

Answer 18

Serratus anterior.

Question 19

Deep fascia covering the anterior aspect of the pectoralis major muscle.

Answer 19

Pectoral fascia.

Question 20

Fascia present b/w the clavicle and pectoralis minor muscle.

Answer 20

Clavipectoral fascia.

Question 21

Modified apocrine sweat gland.

Answer 21

Mammary gland.

Question 22

Breast is located in.

Answer 22

Superficial fascia of pectoral region.

Question 23

Site of high percentage of breast tumor.

Answer 23

Foremen of Langer.

Question 24

Breast consists of.

Answer 24

Skin, stroma (suspensory ligaments of Cooper and fat) and parenchyma (lobes of the breast)

Question 25

Nipple is present in.

Answer 25

Fourth intercostal space.

Question 26

Enlarged sebaceous glands during pregnancy.

Answer 26

Montgomery’s tubercles.

Question 27

Suspensory ligaments of Cooper connects.

Answer 27

Dermis is skin to breast ducts and pectoralis major.

Question 28

Which part of breast secretes milk.

Answer 28

Parenchyma.

Question 29

The parenchyma contains.

Answer 29

15-20 lobes.

Question 30

Reservoir of milk during lactation.

Answer 30

Lactiferous sinus.

Question 31

Blood supply of breast is mainly derived from.

Answer 31

Lateral thoracic artery.

Question 32

Superficial veins drain into.

Answer 32

Internal thoracic vein.

Question 33

Deep veins drain into.

Answer 33

Internal thoracic, axillary and posterior intercostal veins.

Question 34

A plexus of lymph vessels deep into areola.

Answer 34

Subareolar plexus of Sappey.

Question 35

The breast develops from.

Answer 35

Milk line of Schultz.