Muscles 3

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Health Sciences
Health Sciences 2300A/B
Jamie Melling

Deeper Forearm (anterior): - Mid-Layer: Composed of Extensor Carpi Radialis Longus / Flexor Digitorum Superficialis - Extensor Carpi Radialis Longus: - Lateral / Distal Humerus  Second Metacarpal - Extends / abducts hand - Radial Nerve - Flexor Digitorum Superficialis: - Medial Epicondyle  Middle Phalange of Each Finger - Flexes each finger / wrist - Median Nerve - Deep Layer: Composed of Supinator, Flexor Policis Longus, Pronator Quadratus, and Flexor Digitorum Profundus - Supinator: - Lateral Epicondyle  Proximal Radius - Supination - Deep Radial Nerve - Flexor Policis Longus: - Proximal Radius  Distal Phalynx of the Thumb - Flexes Thumb - Median Nerve - Pronator Quadratus: - Distal Shaft of Ulna  Distal Shaft of Radius - Pronation - Median Nerve - Flexor Digitorum Profundus: - Proximal Ulna  Distal Phalynx of Each Finger - Flexes fingers - Median / Ulnar Nerves Posterior Forearm (Superficial): - Extensor Carpi Ulnaris: - Lateral Epicondyle  Distal / Middle Phalanges of Each Finger - Extends Fingers - Deep Radial Nerve - Extensor Digiti Minimi: - Lateral Epicondyle  Tendon of the fifth phalange - Extends little finger - Deep Radial Nerbe - Extensor Digitorum: Anatomical Snuff Box: -Apocket that is created when contracting the deep posterior forearm - Composed on the extensor pollicis longus, abductor pollicis longus, and extensor pollicis brevis Intrinsic Muscles of the Hand: - Hypothenar Group: - Short flexors of the digiti minimi -Allow abduction - Innervated by ulnar nerve - Thenar Group: - Short flexors of the thumb -Allow abduction as well -Also allow you to touch thumb to baby finger
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