Upper limb Dermatomes
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Upper limb Dermatoms

Definition Upper limb dermatomes are specific regions of skin that are innervated by the sensory branches of nerves originating from the spinal cord. These dermatomes correspond to different spinal nerve levels and play a crucial role in conveying sensory information from various parts of the upper limb, such as the fingers, hands, and arms, to…

lower limb dermatomes
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Lower Limb Dermatomes

Definition Dermatomes are specific areas of skin supplied by sensory nerves from a single spinal nerve root. Lower limb dermatomes refer to the regions of skin on the legs and feet that are innervated by different spinal nerve levels. These dermatomes follow a pattern and help healthcare professionals diagnose nerve-related issues based on the location…

Internal Rotation VS External Rotation
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Internal Rotation VS External Rotation

Difference between Internal Rotation and External Rotation External rotation and internal rotation are terms used to describe movements that occur at joints, particularly in the context of the musculoskeletal system. External rotation refers to the movement of a body segment away from the midline of the body or the center of a joint. For example,…

Cervical plexus
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Cervical Plexus

Introduction The cervical plexus is a complex network of nerves that originates from the spinal nerves of the cervical region of the spinal cord, specifically from the ventral rami of the first four cervical nerves (C1-C4). This intricate arrangement of nerves plays a crucial role in innervating various structures in the neck, head, and shoulders….