• The auricular branch of the vagus nerve is a sensory nerve emerging from the superior ganglion of the vagus nerve, joined by branches from the glossopharyngeal (CN IX) and facial nerves, and innervating the lower part of the tympanic membrane and the floor of the external auditory canal. (unboundmedicine.com)
  • The lateral pectoral nerve is larger than the medial and arises from the upper and middle trunks or by a single branch from the lateral cord of the brachial plexus. (neurol.ru)
  • It arises from the medial cord of the brachial plexus, posterior to the axillary artery. (neurol.ru)
  • It sends a small branch to the medial pectoral nerve, forming a loop in front of the first part of the axillary artery, to supply fibers of the pectoralis minor. (neurol.ru)
  • The medial pectoral nerve is derived from the eighth cervical and first thoracic cervical rami. (neurol.ru)
  • Branches from the medial pectoral nerve may also supply portions of the pectoralis major. (neurol.ru)
  • 2. Elite baseball pitchers can sometimes be forced out of a season due to a specific kind of radial nerve damage termed Posterior Interosseous Neuropathy (PIN). (mockdocs.org)
  • The neuronal cell bodies of a nerve's axons are in the brain, the spinal cord, or ganglia, but the nerves run only in the peripheral nervous system. (unboundmedicine.com)
  • In the peripheral nervous system, the axons of neurons are grouped together to form nerves. (teachmeanatomy.info)
  • Nerves with axons that conduct electrochemical impulses toward the central nervous system (CNS) are afferent, nerves with axons that conduct impulses away from the CNS are efferent, and nerves with both afferent and efferent axons are mixed. (unboundmedicine.com)
  • There are three broad functional classifications of nerves - sensory (afferent), intermediate and motor (efferent). (teachmeanatomy.info)
  • The posterior superior alveolar nerves (also from CN V2) innervate the rest of the upper molars. (unboundmedicine.com)
  • The posterior auricular nerve is a motor branch of the facial nerve (CN VII) that innervates the posterior and intrinsic auricular muscles. (unboundmedicine.com)
  • The components of the eighth cranial nerve (CN VIII) carrying axons that convey information regarding sound and balance between the spiral ganglion in the inner ear and the cochlear nuclei in the brainstem. (unboundmedicine.com)
  • Only 60% of the axons in the nerve to a given muscle are motor to the muscle fibers that make up the bulk of the muscle. (medscape.com)
  • The nerve supply branches within the muscle belly, forming a plexus from which groups of axons emerge to supply the muscle fibers. (medscape.com)
  • Sensory nerves - small axons and psuedounipolar structure. (teachmeanatomy.info)
  • Motor nerves - larger axons and multipolar structure. (teachmeanatomy.info)
  • It crosses anterior to the axillary artery and vein, pierces the clavipectoral fascia, and supplies the deep surface of the pectoralis major. (neurol.ru)
  • Enlargement, and the accessory, pierces extensor than more marked asymmetry of the nerve. (cndd-fdd.org)
  • A sensory branch of the mandibular nerve (CN V3) It passes through the parotid gland en route to the ear, where it innervates skin of the pinna, external auditory canal, and tympanic membrane. (unboundmedicine.com)
  • It curves forward to join the branch from the lateral pectoral nerve, entering the deep surface of the pectoralis minor to supply it. (neurol.ru)
  • The assessment of nerve injury includes a careful neurological examination, sometimes accompanied by tests, e.g., electromyography or nerve conduction studies. (unboundmedicine.com)
  • We will look at the general structure of nerves, their layers of connective tissue and finish by considering some conditions that arise when the normal structure is lost. (teachmeanatomy.info)
  • Fig 1.1 - Connective tissue layers of a nerve cell. (teachmeanatomy.info)
  • The anterior superior alveolar nerves, branches of the infraorbital nerve (from CN V2), run in canals in the anterior wall of the maxillary sinus and innervate the upper incisors, canines, premolars, and often part of the first molar. (unboundmedicine.com)
  • The inferior alveolar nerve (from CN V3) runs in the mandibular canal, giving off branches to the lower teeth and gingivae as it passes. (unboundmedicine.com)
  • In gross anatomy, the nerves to skeletal muscles are branches of mixed peripheral nerves. (medscape.com)
  • Sometimes there is a middle superior alveolar nerve that innervates the premolars and first molar. (unboundmedicine.com)
  • A nerve that conducts impulses toward the brain or spinal cord. (unboundmedicine.com)
  • The different microanatomical features of spinal roots, plexus trunks, and peripheral nerves are discussed and compared, as well as the microanatomical explanation of the different sonographical appearance of these three types of nerves. (eurekaselect.com)
  • Insert the needle just medial to the anterior axillary fold over the bulk of the muscle. (neurol.ru)
  • If the needle is inserted too superiorly, it may be in the anterior fibers of the deltoid, which is supplied by the axillary nerve. (neurol.ru)
  • The Soleus muscle is innervated by the Tibial nerve, which is the terminal branch of the Sciatic nerve. (shiken.ai)
  • Epineurium - Surrounds the entire nerve, which is formed by a collection of fascicles. (teachmeanatomy.info)
  • Epineurium appears on the nerve as it exits the intervertebral foramen. (teachmeanatomy.info)
  • Sternocostal part: Innervation is via the lateral and medial pectoral nerves, lateral and medial cords, middle and lower trunks, and roots C7, C8, T 1. (neurol.ru)
  • The aims of this chapter are to explain and present the older and new concepts and understanding around the microanatomy of nerve roots, trunks, and peripheral nerves. (eurekaselect.com)
  • Symptoms of nerve injury include paresthesias, loss of sensation and position sense, impaired motor function, cranial nerve malfunction, changes in reflexes, and impairments in glandular secretion. (unboundmedicine.com)
  • A somatic motor nerve originating in the abducens nucleus in the pons. (unboundmedicine.com)
  • The axon is a long, thin structure down which action potentials (the nerve impulse) are conducted. (teachmeanatomy.info)
  • The space just deep to this layer is the subcircumneural (subparaneural) space, which should most probably be the target space for successful and safe single-injection block and catheter placement for continuous nerve block. (eurekaselect.com)