Sciatic Nerve Anatomical Course

Median Nerve Distribution Innervation Anatomy Human Anatomy Kenhub

Hello, again. This is Matt from Kenhub. Andin this tutorial, we will discuss the distribution, innervation, and anatomy of the median nerve. The median nerve derives from the lateraland the medial cords of the brachial plexus. Initially, it travels down on the medial sideof the arm along with the brachial artery. At the elbow, it will continue its courseunder the aponeurosis of the biceps and between the two heads of the pronator teres. Once it gives off the antebrachial interosseousbranch, it will initiate its trajectory in the forearm between flexor digitorum profundusand the flexor digitorum superficialis muscles

serving as their supply. Once the nerve reaches the rest, it continuesunder the flexor retinaculum in the carpal tunnel going towards the palm of the hand.There, it divides into its terminal braches which will then innervate several structuresincluding the thenar muscles. The median nerve provides motor branches tomany muscles of the upper extremity, including the pronator teres, flexor digitorum superficialisand the profundus, and the most of the thenar muscles. This tutorial is more fun than reading a textbook, righté If you want more tutorials, interactive

quizzes, articles, and an atlas of human anatomy,click on the “Take me to Kenhub� button. It is time to say goodbye to your old textbooks,and say hello to your new anatomy learning partner, Kenhub. See you there! kenhub .

Extensor Hallucis Longus Muscle Innervation Anatomy Human Anatomy Kenhub

Hey, everyone. It's Matt from Kenhub! Andin this tutorial, we will discuss the anatomy and function of the extensor hallucis longus. The extensor hallucis longus or in Latin,“musculus extensor hallucis longus,� is one of three anterior muscles that functionas extensors at the lower leg. They lie within the anterior compartment locatedat the ventrolateral region of the lower leg where they form its surface structure. Their tendons are particularly prominent onthe dorsum of the foot. The extensor hallucis longus has its originat the medial side of the fibula and interosseous

membrane. It merges into a tendon above thesuperior extensor retinaculum as well. Its insertion is the distal phalanx of thebig toe. All anterior muscles are innervated by thedeep fibular nerve, also called the deep peroneal nerve. The main function of the anterior musclesof the lower leg is the dorsal extension of the upper ankle joint. In addition, the extensor hallucis longusis partly responsible for the lifting of the toes or the extension of the first, middle,and end joints.

Due to the course of the tendons, the anteriormuscles also contribute to the movement of the lower ankle joint. The extensor hallucis longus can provide bothan inversion and eversion of the ankle joint depending on the initial situation. This tutorial is more fun than reading a textbook,righté If you want more tutorials, interactive quizzes,articles, and an atlas of human anatomy, click on the “Take me to Kenhubâ€� button. It is time to say goodbye to your old textbooksand say hello to your new anatomy learning

partner, Kenhub! See you there! kenhub .

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