This document provides an overview of upper limb anatomy including:
- The breast lies over the pectoralis major muscle and fascia and extends from the 2nd to 6th ribs.
- The axilla is the region between the upper arm and chest wall bounded by several muscles. It contains the axillary artery, vein and brachial plexus nerves.
- The muscles of the shoulder region include the pectoralis major, latissimus dorsi and deltoid which all insert on the humerus.
53. Origin of clavicular head of pectoralis major m.
From the medial ½ of front of clavicle
Origin of sternocostal head of
Pectoralis major m. from anterior
Surface of sternum upper 6 c.c.
Insertion of pectoralis major m.
In the lateral lip of
bicipital groove of humerus
Nerve supply
Med. & lat. Pectoral nerves
54. Origin of Pectoralis minor m.
from 3rd
, 4th
&5th
ribs.
Insertion of pectoralis minor m.
In the coracoid process
Nerve supply
Medial pectoral n.
55. Origin of subclavius m.
from 1st
costochondral junction.
Insertion of subclavius m.
In the lower surface of the
Middle ½ of the clavicle.
56. Origin of serratus anterior m.
By 8 digitations from upper ribs
Inserted of serratus anterior m.
along the inner aspect
of medial lib of scapula
57. Origin of trapezius m.
1. Superior nuchal line.
2. External occiptal protuberance.
3. Ligamentum nuchae.
4. C7 spine & spines of all
thoracic vertebrae.
61. Insertion of teres
major m. in the
medial lip of bicipital
groove
Insertion of pectoralis
major m. in the lateral
lip of bicipital groove
Insertion of latissimus
dorsi m. in the floor of
bicipital groove
62. Origin of the levator scapulae m.
from transverse process of the
upper 4 cervical vertebrae
Insertion of the levator scapulae
m. in medial border of scapula
from superior angle to root of
spine.
63. Origin of the levator scapulae m.
from transverse process of the
upper 4 cervical vertebrae
Insertion of the levator scapulae
m. in medial border of scapula
from superior angle to root of
spine.
64. Origin of rhomboid minor m.
from C7 & T1 spines.
Insertion of rhomboid minor
m. in medial border of the
scapula opposite to root of
spine.
65. Origin of rhomboid
major m. from T2,3,4 & 5
spines
Insertion of rhomboid
major m. in medial
border of the scapula;
from root of the spine
till inferior angle
66. Origin of supraspinatus m.
from supraspinous fossa.
Insertion of supraspinatus m.
in upper impression of greater
tubercle of the humerus
70. Origin of teres
minor m. from
upper ⅔ of the
lateral border of
the scapula
(dorsal(
Insertion of teres minor m.
in lower impression of the
greater tubercle
86. Origin of long head of triceps
m. from infra-glenoid tubercle
Origin of lateral head
of triceps m. from
back of humerus
(spiral groove)
Insertion of triceps m.
in Top of the olecranon
process of ulna