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Latissimus dorsi

Noun, pl. latissimi dorsi 1. The larger, flat, dorso-lateral muscle on the trunk, posterior to the arm, and partly covered by the trapezius on its median dorsal region. The latissimus dorsi is responsible for extension, adduction, transverse extension also known as horizontal abduction, flexion from an extended position, and (medial) internal rotation of the shoulder joint. It also has a synergistic role in extension and lateral flexion of the lumbar spine. (wikipedia.org) 2. Either of the larger, flat, dorso-lateral muscles on the trunk, posterior to the arm, and partly covered by the trapezius on its median dorsal region. (wiktionary.org) 3. Origin, spinous processes of lower five or six thoracic and the lumbar vertebrae, median ridge of sacrum, and outer lip of iliac crest; insertion, with teres major into posterior lip of bicipital groove of humerus; action, adducts arm, rotates it medially, and extends it; nerve supply, thoracodorsal. (biology-online.org) Syn: commonly referred to as “lats” (esp. among body builders) Word origin: From Latin lātissimus (“widest, broadest”), superlative oflātus (“wide, broad”), + dorsī, genitive of dorsum (“the...

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099 The Branches Of The Axillary Artery

In this episode, Leslie teaches us a fun and easy way to remember the six branches of the axillary artery which include which include the Superior Thoracic artery, Thoracoacromial artery, Lateral Thoracic artery, Subscapular artery, Posterior Circumflex Humeral artery and the Anterior Circumflex humeral artery. Enjoy! Transcript of Today’s Episode Hello and welcome to another episode of Interactive-Biology TV where we’re making Biology fun! My name is Leslie Samuel and this video is brought to you by our sponsors over at 3D4Medical.com, the creators of this app. This is an iPhone app that I am using for Anatomy. It’s...

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Struggling in Biology?

Are You Premed?

Confused about the MCAT? Not sure how to prepare? This guide will show you how