Cranial Nerves The brain and spinal cord (CNS) are connected to parts of the body by nerves and cell bodies called the peripheral nervous system. The PNS contains all of the nervous tissue outside the brain and spinal cord. Afferent (sensory) nerve fibers-conduct nerve impulses toward the CNS Efferent (motor) nerve fibers-conduct nerve pulses away Sensory Somatic System – Carries nerve impulses from the senses to the CNS and also carries the impulses to the skeletal muscles and glands
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12 cranial nerves I Olfactory 2. Optic 3 oculomotor 4 trochlear 5 trigeminal 6 abducens 7 facial 8 vestibulocochlear 9 glassopharygeal 10 Vegas 11 accessory 12 hypoglossal The 12 cranial nerves Oh Oh Oh To Touch And Feel Very Green Vegetables Ah Ha J J J J J J J J J J J J J H J J J J J J N N N N N J J J J J J J J J N J J J J
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Cranial Nerves The human body is a unique and fascinating entity. There is not much notice taken of the features the human body is capable of. The brain is necessary to perform day-to-day actions‚ such as the ability to speak‚ and see amongst us. This brain is made up of simple mater (Pia mater‚ Arachnoid mater‚ Dura mater) and the cranial surface to protect the brain. We live our daily lives without acknowledging the importance of this organ‚ the brain‚ unless you’re a medical student of
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Trigeminal nerve The trigeminal nerve is the fifth of twelve pairs of cranial nerves enervating the face and head‚ and is denoted by the Roman Numeral V. It has three divisions which enervate the forehead and eye (ophthalmic V1)‚ cheek (maxillary V2) and lower face and jaw (mandibular V3). The trigeminal nerves function in sensing facial touch‚ pain and temperature‚ as well as controlling muscles used for chewing. The trigeminal nerve functions should be distinguished from the facial nerve (cranial
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the cranial nerves‚ to test if all of them are alert‚ functioning and normal. I will be testing the cranial nerves on Brenda Jones my partner for this experiment. The cranial nerves that I will be testing on my partner is the olfactory nerve‚ the optic nerve‚ the oculomotor nerve‚ the trochlear nerve‚ the abduces nerves‚ the trigeminal nerve‚ her facial nerves‚ the vestibulocochlear nerves‚ the glossopharyngeal nerve‚ the Vagus nerves‚ her accessory nerve and her Hypoglossal nerves. By examining
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INTRODUCTION Trigeminal nerve is the most largest and most complex of the 12 nerves. It supplies sensations to the face‚ mucous membrane and other structures of the head. It provides a motor nerve to the muscles of mastication and contains proprioceptive receptors. It consists of a large sensory and small motor nerve that exits through the pons at it junction with the middle cerebral peduncle. Laterally it passes to join the semilunar ganglion in the Meckel Cave. The nerve passes anteriorly to end
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Exercise 1: The effects of nerve stimulation A. Describe briefly what you have done for this section (maximum 100 words). Basically I am the volunteer. Two students handle the system while one student helps to spread the adequate electrode cream on the volunteer’s left wrist. The system is set to continuous‚ frequency is 1Hz‚ pulse duration at 200μs and pulse current at 10mA. The stimulator is switched off to disconnect the isolated stimulator terminals. The stimulus is then switched on and
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Anatomy & Physiology II Peripheral Nervous System A. Cranial nerve numbers Give the Roman numeral for the 12 pairs of cranial nerves. VI_ 1. Abducens I__ 7. Olfactory XI__ 2. Accessory II_ 8. Optic VII 3. Facial V__ 9. Trigeminal IX_ 4. Glossophyaryngeal IV_ 10. Trochlear XII 5. Hypoglossal X__ 11. Vagus III 6. Oculomotor VIII 12. Vestibulocochlear B. Cranial nerve function Identify if each cranial nerve is mainly sensory‚ motor‚ or both. S = sensory M = motor B
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Handout Lab 5 - Cranial Nerves: Assessment of Functions INTRODUCTION The central nervous system (CNS) consists of the brain and the spinal cord. The CNS receives sensory information from other parts of the body or the body’s external environment and transmits motor information to other parts of the body by way of the peripheral nervous system (PNS). The PNS of the human includes 31 pairs of spinal nerves and 12 pairs of cranial nerves. Some nerves contain only motor nerve fibers (efferent fibers);
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A Review of Facial Nerve Anatomy Terence M. Myckatyn‚ M.D.1 and Susan E. Mackinnon‚ M.D.1 ABSTRACT An intimate knowledge of facial nerve anatomy is critical to avoid its inadvertent injury during rhytidectomy‚ parotidectomy‚ maxillofacial fracture reduction‚ and almost any surgery of the head and neck. Injury to the frontal and marginal mandibular branches of the facial nerve in particular can lead to obvious clinical deficits‚ and areas where these nerves are particularly susceptible to injury
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