All of the following are examples of plexuses, EXCEPT: Sacral plexus Lumbar plexus Cervical plexus Brachial plexus Thoracic plexus
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In the context of human anatomy, a plexus is a network of intersecting nerves or vessels. The major nerve plexuses in the human body include: Show more…
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Drag each label into the appropriate category to identify from which plexus the given nerve emerges: - Obturator nerve - Phrenic nerve - Radial nerve - Ulnar nerve - Great auricular nerve - Musculocutaneous nerve - Femoral nerve - Sciatic nerve - Axillary nerve - Pudendal nerve Categories: - Cervical - Brachial - Lumbar - Sacral and Coccygeal
Adi S.
D. Major Nerves from the Cervical and Brachial Plexuses The cervical plexus is formed from the anterior ventral rami of C1-C4 on both the right and left sides of the spinal cord. An important paired nerve from this plexus is the phrenic nerve - relating to the diaphragm (C3-C5), which innervates the diaphragm and is important for breathing. Remember the saying, "Cranial nerves 3, 4, and 5 keep the diaphragm alive." Other cervical nerves mainly supply the scalp, neck, shoulders, and chest. The brachial plexus is formed from the ventral rami of C5-T1. This plexus serves the shoulders and upper limbs. The main nerves that arise from the brachial plexus are the axillary, median, musculocutaneous, radial, and ulnar. Activity 4: Major Nerves from the Cervical and Brachial Plexuses 1. Label the phrenic nerve and the five main brachial plexus nerves in Figure 15.5 using the name of the nerve and the muscles it innervates. Table 15.1 can assist in identification. 2. Identify the nerves from Figure 15.5 on a model or chart. 3. Pronounce the terms as you point to them. (posterior obono) axillary nerve median nerve musculocutaneous nerve phrenic nerve radial nerve ulnar nerve Figure 15.5: Major nerves from the cervical and brachial plexuses.
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