Anatomy of the Upper Limb Bones

<p>Apical axillary lymph nodes (D)</p> Signup and view all the answers

<p>Protracting the scapula (C)</p> Signup and view all the answers

<p>Subclavian groove on clavicle (C)</p> Signup and view all the answers

<p>Pectoralis major and teres major (D)</p> Signup and view all the answers

<p>C5 - C7 (C)</p> Signup and view all the answers

<p>Round and forms the sternoclavicular joint (C)</p> Signup and view all the answers

<p>Suprascapular artery (B)</p> Signup and view all the answers

<p>Passage for the suprascapular nerve (B)</p> Signup and view all the answers

<p>Anatomical neck (A)</p> Signup and view all the answers

<p>Radial nerve (A)</p> Signup and view all the answers

<p>Loose areolar tissue allowing mobility (A)</p> Signup and view all the answers

<p>More projected than the lateral epicondyle (D)</p> Signup and view all the answers

<p>2nd rib (B)</p> Signup and view all the answers

<p>C5 (B)</p> Signup and view all the answers

<p>Middle trunk (B)</p> Signup and view all the answers

<p>Biceps (A)</p> Signup and view all the answers

<p>Medial cord (B)</p> Signup and view all the answers

<p>Klumpke's paralysis (B)</p> Signup and view all the answers

<p>Roots &gt; Trunks &gt; Divisions &gt; Cords &gt; Branches (A)</p> Signup and view all the answers

<p>Medial pectoral nerve (D)</p> Signup and view all the answers

<p>Extension of the MPJ and flexion of the IPJ (A)</p> Signup and view all the answers

A long bone in the shoulder, shaped like an 'S' and connecting the shoulder blade to the breastbone.

A triangular bone in the back, connecting to the humerus.

The upper arm bone connecting the shoulder to the elbow.

The rounded top of the humerus that fits into the shoulder socket.

The groove on the humerus for the biceps tendon.

The prominent bump on the humerus where the deltoid muscle attaches.

The large, pulley-like structure on the lower end of the humerus.

A small, rounded prominence on the lower end of the humerus.

The largest muscle in the pectoral region, responsible for flexing the arm at the shoulder and rotating it medially.

A smaller muscle situated beneath the Pectoralis Major, assisting in drawing the scapula forward and downward.

A small muscle that helps to depress the clavicle, located on the anterior surface of the thorax.

A large, expansive muscle that helps in protraction of the scapula, also involved in abducting the shoulder (98-180 degrees).

A triangular space containing important structures like the cephalic vein, deltoid branch of thoracoacromial artery, and deltopectoral lymph nodes, located between the deltoid and pectoralis major muscles.

A thick layer of fascia that envelops the Pectoralis Minor and Subclavius muscles, attaching to the clavicle superiorly and connecting to the axillary region.

A pyramidal space in the arm, containing vital blood vessels, nerves, lymph nodes, and other structures, bordered by muscles and fascia.

A space or region in the upper limb where key blood vessels and nerves pass through, connecting the arm to the thorax.

The brachial plexus is a network of nerves that supplies the upper limb. It originates from the spinal nerves C5-T1 and branches out into multiple nerves that control the muscles, sensation, and movement of the arm, forearm, and hand.

The brachial plexus is organized into five stages: roots, trunks, divisions, cords, and branches. Each stage represents a different level of nerve organization and helps you understand where a nerve comes from and what it supplies.

The brachial plexus is made up of the spinal nerves C5-T1, with minor contributions from C4 or T2 in some people. This tells you which spinal nerves are involved in the plexus.

The brachial plexus starts in the neck, passes behind the clavicle, and into the axilla where it branches out to supply the upper limb. Understanding this pathway helps locate the plexus and nerve injuries.

Each trunk of the brachial plexus is formed by the merging of two roots. The upper trunk is made of C5 and C6. The middle trunk is made of C7. The lower trunk is made of C8 and T1.

The lateral cord is formed by the anterior divisions of the upper and middle trunks. It gives rise to the lateral pectoral nerve, musculocutaneous nerve, and part of the median nerve.

The medial cord is formed by Anterior division of lower trunk. It gives rise to the medial pectoral nerve, medial cutaneous nerve of the arm and forearm, and the ulnar nerve.

The posterior cord is formed by all the posterior divisions of the trunks. It gives rise to the upper subscapular nerve, lower subscapular nerve, thoracodorsal nerve, axillary nerve and radial nerve.