In humans there are 31 pairs: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal. Nerves that connect the spinal cord with other parts of the body are called spinal nerves. A nerve root (Latin: radix nervi) is the initial segment of a nerve leaving the central nervous system.Types include: Cranial nerve root: the initial or proximal segment of one of the twelve pairs of cranial nerves leaving the central nervous system from the brain stem or the highest levels of the spinal cord. All the cranial nerves are mixed but still two olfactory, optic and vestibulocochlear nerves are slightly different. Good X. Velvet Learn vocabulary, terms, and more with flashcards, games, and other study tools. Conversely, spinal nerves are categorized into five groups as 12 thoracic nerve pairs, 5 lumber nerve pairs, 8 cervical nerve pairs, one pair of coccygeal nerve pair, and 5 sacral nerve pairs. Feel VIII. Each spinal nerve corresponds to a skin region of the body, described as a dermatome. The cranial nerves are nerves that arise from the brain and exit the skull through holes (cranial foramina) at its base rather than through the spinal cord. Start studying Brain/Cranial and Spinal Nerves. The brain communicates with most of the body through the spinal nerves. There are 31 pairs of them, located at intervals along the length of the spinal cord (see Overview of Spinal Cord Disorders). To V. Touch VI. The cranial nerve II, which largely responsible of vision/eyesight is called optic spinal nerve. You can think of the CNS as the control center for the body. The trigeminal nerve has three divisions, which … Most of the cranial nerves originate in the brain stem and pass through the muscles and sense organs of the head and neck. And VII. The spinal cord is the continuation of the brain which lies protected within the bones of the spine. Cranial Nerve II (O) Optic Cranial Nerves and Spinal Nerves. I.Oh II.Oh III.Oh IV. It allows us to think, create memories, speak, move, run, etc. Each pair connects the spinal cord with a specific region of the body. Peripheral nervous system connections with various organs and structures of the body are established through cranial nerves and spinal nerves. originate from brain (cranium) and proximal spinal cord - carry: afferent fibres, efferent fibres, and autonomic fibres (and information) Cranial Nerve I (O) Olfactory - sensory function: sense of smell. The functions of the cranial nerves are sensory, motor, or both: Sensory cranial nerves help a person to see, smell, and hear. Cranial nerves and spinal nerves Dr. Carmen E. Rexach Anatomy 35 Mt San Antonio College. Cranial Nerves •12 prs ai – arise from the inferior aspect of the brain – 2 from the forebrain – 10 from the brain stem •Functions –Sensory – Motor – ….or both. Cranial nerves arise directly from the brain in contrast to spinal nerves and exit through its foramina. The spinal nerves receive messages including touch, temperature, position, vibration, and pain from the small nerves in the skin, muscles, joints, and internal organs of the body. Cranial nerves are concerned with the head, neck, and other facial regions of the body. Spinal nerve, in vertebrates, any one of many paired peripheral nerves that arise from the spinal cord. The trigeminal nerve is the largest of your cranial nerves and has both sensory and motor functions.. The Peripheral Nervous System (PNS) consists of 12 cranial nerves, and 31 pairs of spinal nerves. Very IX. Cranial Nerves. Motor cranial nerves help control muscle movements in …