Radial Nerve Question: Describe the radial nerve under the following headings: (a) root value; (b) origin, course, and relations; (c) branches and distribution; and (d) applied anatomy. Answer. The radial nerve is the thickest and largest nerve of the upper limb. Radial Nerve Root value Ventral rami of C5, C6, C7, C8 and T1. Radial Nerve Origin, course, and … [Read more...] about Radial Nerve
Mammary Gland Development
Mammary Gland Development Question 1. Describe the development of the breast/mammary gland in brief. Answer. The mammary gland develops in the pectoral region from the milk line. The milk line is a linear thickening of surface ectoderm that appears in the 4th week of intrauterine life. The milk line extends from the axilla to the inguinal region on the ventral … [Read more...] about Mammary Gland Development
Serratus Anterior Muscle
Serratus Anterior Muscle Question 1. Give the origin, insertion, nerve supply, and actions of the serratus anterior muscle. Answer. Serratus anterior is a broad, flat muscle of the trunk in the medial wall of the axilla. It lies between the ribs and scapula at the upper lateral part of the chest. Serratus Anterior Muscle Origin Arises by eight digitations from … [Read more...] about Serratus Anterior Muscle
Clavipectoral Fascia
Clavipectoral Fascia Question 1. Write a short note on the clavipectoral fascia. Answer. The clavipectoral fascia is the strong fascial sheet deep to the pectoralis major muscle. It extends from the clavicle above to the axillary fascia below. Clavipectoral Fascia Attachments Medial: Medially, it fuses with the anterior intercostal membrane of the upper two … [Read more...] about Clavipectoral Fascia
The Axillary Region
The Axillary Region Question 1. Enumerate the structures piercing the clavipectoral fascia. Answer. Clavipectoral fascia is pierced by four structures: Lateral pectoral nerve Thoracoacromial artery Cephalic vein Lymphatics from the infraclavicular nodes and the deep part of the breast to an apical group of axillary lymph nodes Axilla The axilla is a … [Read more...] about The Axillary Region