Looking for capsule from other weeks? Find them here.
- Nerve supply of pectoralis major:
- Lateral and medial pectoral nerve
- Contents of Delto-Pectoral groove:
- Deltoid branch of acromio thoracic artery
- Cephalic vein
- Origin of median nerve:
- Lateral chord and medial root
- Origin of Deltoid Muscle:-
- Anterior Border of Clavicle
- Acromial process
- Lower Border of Spinus process
- Upper border of Spinous Process- Trapezius
- Insertion of Deltoid Muscle:
- Deltoid tubercle in shaft of humerus
- Nerve supply of deltoid muscle- Axillary Nerve
- Biceps brachii:-
- Origin:-
- Short head from Coracoid process
- Long head from supraglenoid cavity
- Insertion:-
- Radial tuberosity
- Nerve-
- Brachial artery
- Action:-
- flexion
- Origin:-
- Action of Deltoid muscle:-
- 15 to 90 Abduction
- Extension
- Clavicular fibres of deltoid cause extension
- Coracobrachialis is pierced by:
- Musculo cutaneous nerve
- Nerve supply of serratus anterior:
- Long thoracic nerve of bell, associated clinical case:
- Winging of scapula
- Long thoracic nerve of bell, associated clinical case:
- Nerve supply of trapezius:-
- Spinal accessory nerve
- Nerve supply of rhomboid major:-
- Dorsal scapular nerve
- Nerve present in suprascapular notch:-
- Suprascapular nerve- supplies to:-
- Suprasinatus – zero to 15deg abduction
- Infraspinatus- lateral rotation
- Suprascapular nerve- supplies to:-
- Axillary nerve winds around the surgical nerve of humerus. So to avoid it being damaged, intramuscular injection is given in the lower half of deltoid(actual practice- upper and outer deltoid quadrant)
- Quadrangular space:-
- Sup: Teres minor
- Inf: teres major
- Med: long head of triceps brachii
- Laterall: surgical neck of humerus
- Contents:-
- Axillary nerve
- Posterior circumflex humeral vesssels
- Upper triangular space:-
- Sup: inferior border of teres minor
- Inf: superior border of teres major
- Lat: medial border of long head of triceps
- Contents:-
- Circumflex scapular artery
- Lower triangular space:-
- Sup: lower border of teres major
- Med: long head of triceps
- Lateral: medial border of humerus
- Content:-
- Radial nerve
- Profunda brachii vessels.
- Triangle of Auscultation:-
- Medial border:- lateral border of trapezius
- Lateral border:- Medial border of scapula
- Inferiorly: Upper border of latissimus dorsii
- Floor:
- 6th rib
- 7th rib
- 6th intercostal space
- Rhomboid major
- Respiratory sounds of lower lobe of lungs
- Humerus:-
- Trochlea- medial, pulley shaped surface articulating with the trochlear notch of ulna
- Capitulum- lateral, rounded projection articulating with the head of humerus
- Carrying Angle- The medial edge of the trochlea projects down 6 mm more than the lateral edge resulting in the formation of carrying angle.
- Muscles of Coracoid Process:-
- Superior: Pectoralis Minor
- Tip:
- Short head of biceps
- Coracobrachialis
- Muscles and their function:-
- Flexion-
- Clavicular fibres of Pectoralis Major
- Extension-
- Latissimus Dorsi
- Adduction-
- Sternocostal fibres of pectoralis major
- Latissimus dorsi
- Abduction-
- Supraspinatus- 0 to 15
- Deltoid- 15 to 90
- Overhead abduction:-
- Serratus Anterior
- Trapeziod
- Medial rotation-
- Abdominal fibres of pectoralis major
- Latissimus dorsi
- Lateral Rotation:-
- Infraspinatus
- Teres major
- Brachialis-
- Only muscle originating from the shaft of the humerus
- Inserts into the coranoid process of ulna
- Flexion-
Article may be further updates as per need.
If you find any errors, share it in the comment section below👇🏻👇🏻👇🏻
Thanks!
See Ya!
Peace!
✌🏻✌🏻✌🏻