muscles of the pectoral region

Question 1

what are the muscles in the pectoral region?

Answer 1

pectoralis major muscle, pectoralis minor muscle, serratus anterior muscle,
and subclavius muscle

Question 2

what is the origin of the pectoralis major muscle?

Answer 2

medial half of the clavicle, the manubrium, the body of the sternum, the costal cartilages of ribs 1-6, the anterior layer of the rectus sheath

Question 3

what is the insertion of the pectoralis major muscle?

Answer 3

crest of the greater tuberle of the humerus

Question 4

what is the nerve supply of the pectoralis major muscle?

Answer 4

medial and lateral pectoral nerves, the brachial plexus (C5-T1)

Question 5

what is the origin of the pectoralis minor muscle?

Answer 5

3rd to 5th ribs

Question 6

what is the insertion of the pectoralis minor muscle?

Answer 6

coracoid process of the scapula

Question 7

what is the nerve supply of the pectoralis minor muscle?

Answer 7

medial and lateral pectoral nerves (C6-T1)

Question 8

what is the origin of the serratus anterior muscle?

Answer 8

superior: 1st and 2nd ribs
medial: 2nd and 3rd ribs
inferior: the 4th through 9th ribs

Question 9

what is the insertion of the serratus anterior muscle?

Answer 9

medial margin of the costal surface of the scapula

Question 10

what is the nerve supply of the serratus anterior muscle?

Answer 10

long thoratic nerve and the brachial plexus (C5-C7)

Question 11

what is the origin of the subclavis muscle?

Answer 11

costal cartilage and the 1st rib

Question 12

what is the insertion of the subclavis muscle?

Answer 12

acromial end of the clavicle

Question 13

what is the nerve supply of the subclavis muscle?

Answer 13

subclavian nerve