Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
Lattisimus Dorsi
|
Innerv: Thoracodorsal
A: Extends, adducts, and medially rotates the humerus at the shoulder joint Other: There is a twisting of the fibers as they converge toward their insertion on the humerus |
|
|
Trapezius
|
Innerv: Accessory nerve (CN XI) and C3 & C4 (spinal nerves)
A: Upper fibers: Elevate scapula Middle fibers: Retract scapula Lower fibers: Depress scapula Other: Helps the serratus anterior in making possible abduction of the humerus of more than 90°. Paralysis of the trapezius muscle results in a 'droopy' shoulder. |
|
|
Levator scapulae
|
Innerv: Dorsal scapular nerve
A: Elevates and fixes the scapula |
|
|
Rhomboidei (major & minor)
|
Innerv: Dorsal scapular nerve
A: Retracts and elevates the scapula |
|
|
Serratus anterior
|
Innerve: Long thoracic nerve
A: Protracts the scapula and holds it against the thoracic wall. Positions the glenoid cavity. Other: Paralysis = "winged scapula" |
|
|
Deltoid
|
Innerv: Axillary nerve
A: Anterior fibers: Flex and medially rotate the humerus Middle fibers: Chief abductor of the humerus Posterior fibers: Extend and laterally rotate the humerus |
|
|
Teres major
|
Innerv: Lower subscapular nerve
A: Adducts and medially rotates the humerus |
|
|
Supraspinatus
|
Innerv: Suprascapular nerve
A: Abducts the humerus |
|
|
Infraspinatus
|
Innerv: Suprascapular nerve
A: Laterally rotates the humerus |
|
|
Teres minor
|
Innerv: Axillary nerve
A: Laterally rotates the humerus |
|
|
Subscapularis
|
Innerv: Upper and lower subscapular nerves
A: Medially rotates the humerus |
|
|
Omohyoid muscle
|
Innerv: Cervical nerves 1,2 and 3
A: Depresses, retracts and steadies the hyoid bone Other: 2 parts - The inferior attachment of this muscle is the superior border of the scapula near the suprascapular notch. The superior attachment is to the hyoid bone on which this muscle acts. |
|
|
Triangle of Auscultation
|
The triangle of auscultation is located at the superior horizontal border of the latissimus dorsi, the medial border of the scapula, and the inferolateral border of the trapezius. Respiratory sounds can be clearly auscultated in the triangle (over 6th intercostal space) if the scapula is moved anteriorly by folding the upper limbs across the chest and the trunk flexed.
|
|
|
Upper Limb / Shoulder Blood Supply
|
The arterial route for supply of the upper limb usually develops between branches of the subclavian artery and the third part of the axillary artery. The vessels involved include:
1. Transverse cervical artery (deep branch) or the dorsal scapular artery, and the suprascapular artery – these arteries are usually branches of the thyrocervical trunk that arise from the first part of the subclavian artery – many arterial variations exist in this region 2. Circumflex scapular artery - a branch of the subscapular artery that arises from the third part of the axillary artery |
