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….
What Is the Phrenic Nerve? The phrenic nerve is a crucial component of the human nervous system, playing a vital role in facilitating respiration. It is one of the most important nerves in the body, originating from the cervical (neck) region of the spinal cord and providing motor and sensory innervation to the diaphragm, the…
What is Lateral Plantar Nerve? The distribution of the Lateral Plantar Nerve, also known as the External Plantar Nerve, is similar to that of the Ulnar Nerve in the Hand. It supplies the majority of the deep muscles as well as the skin of the fifth toe and the lateral portion of the fourth foot….
What are nerves? Nervous system autonomic In your body, how many of these nerves are there? Nerves in the body Cranial nerves Spinal nerves How many nerves are there overall then? How is a nerve cell constructed? How do nerves function? Is length important? How are the nerves organized? What diseases and disorders affect the…
What is a Nervous System? The human nervous system guides almost everything you do, think, say, or feel. It controls complicated activities like body movement, thought & memory. It also plays an essential role in the things the body does without thinking, such as breathing, blushing, blinking & digestion. The nervous system affects every aspect…
What is pain? Pain is a complex and subjective experience that can be caused by a variety of stimuli, such as physical injury, disease, or emotional distress. Pain perception involves a series of processes that occur in the nervous system, including the transmission of signals from peripheral nerves to the spinal cord and brain, where…
What is the sacral plexus? The sacral plexus is placed on the posterolateral wall of the pelvic cavity, fibbing anterior to the Piriformis. The sacral subsidies part out of the anterior sacral foramina and course laterally & inferiorly on the pelvic wall. A majority of the nerves originating from the sacral plexus pass through the…
What is lumbar plexus? The lumbar plexus is a vital collection of nerves that arise from mostly the lumbar medulla spinalis. The term plexus refers to a “web” of nerves that’s created just lateral to where T12-L5 exit the neural structure via intervertebral foramina. The plexus exists bilaterally and allows nerves to mix with different…
What is Ulnar Nerve? The ulnar nerve arises from C8-T1 nerve roots which form the medial cord of the brachial plexus. The cubital nerve travels down the hand where it moves behind the medial epicondyle of the humerus at the elbow. The nervous doesn’t give branches within the axilla or within the upper arm. It…
What is a Musculocutaneous Nerve? The brachial plexus is the complex set of nerves originating from the ventral roots of C5-T1 that innervates numerous muscles and cutaneous regions of the upper limb, thorax, and back. The 5 spinal roots form a superior, middle, and inferior trunk. Each of those trunks has an anterior and posterior…
