Breast

Question 1

What muscles are found in the breast area?

Answer 1

Pectoralis Major
Deltoid
Pectoralis Minor
Subclavius

Question 2

Innervation of pectoralis major

Answer 2

medial and lateral pectoral nerve

Question 3

Insertion of pectoralis minor

Answer 3

Coracoid process and greater tubercle of the humerus

Question 4

What are the origins of pectoralis major?

Answer 4

clavicular and sternal head
inter-tubercular groove of the humerus
anterior layer of rectus sheath
costal cartilage 2-6

Question 5

Origin of pectoralis minor

Answer 5

rib 3-5

Question 6

Insertion of pectoralis minor

Answer 6

coracoid process of the scapula

Question 7

Innervation of pectoralis minor

Answer 7

medial pectoral nerve

Question 8

What does the lateral pectoral nerve innervate?

Answer 8

Pectoralis major and deltoid

Question 9

What does the medial pectoral nerve innervate?

Answer 9

Pectoralis major, minor and deltoid

Question 10

Innervation of subclavius muscle

Answer 10

subclavian nerve

Question 11

Origin and insertion of subclavius

Answer 11

Origin - 1st rib

insertion - lower surface of the clavicle

Question 12

What movements are the pectoralis major responsible for?

Answer 12

flexion
adduction
Internal rotation of humerus

Question 13

What movements are the pectoralis minor responsible for?

Answer 13

adduction

rotation of scapula

Question 14

What is the function of the subclavius muscle?

Answer 14

Stabilisation of the clavicle