Health Sciences 2300A/B Lecture Notes - Lecture 6: Extensor Digitorum Longus Muscle, Levator Palpebrae Superioris Muscle, Medial Rectus Muscle

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Muscles are named ater either funcion, locaion, atachments, shape or arbitrary. Extensor digitorum longus: the longer component of the extensor digitorum along with extensor digitorum brevis, they work to extend digits of the lower appendicular body. Petoralis major: located in the pectoral region along with pectoralis minor where they are named ater (same with rectus femoris located in the femoral region) Biceps brachii: biceps means two heads and brachial is the region it situates. Some names have arbitrary and historical names such as sartorius. Muscles of the tongue, eye and throat. Within each component, idenify the muscular atachments, common nerve supply and muscular funcion. Muscles within similar muscular compartments oten have the same embryonic origin, meaning they will have similar funcions and innervaion. Muscles in the facial expression compartment are innervated by cranial nerve (cn) vii. A large muscle separated by the epicranius tendon into 2 bellies. Contains the frontalis belly and the occipitalis belly which atach bones.

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