Classify general sensory receptors by st B. How is sensory information processed

Question

Classify general sensory receptors by st B. How is sensory information processed? sensory receptors by stimulus detected, body location, and struc- a Outline b. Describe receptor generator c. Describe andgenerator potentials and sensory adaptation. the events that lead to sensation and perception. the main aspects of sensory perception. C. Nerves and associated ganglia a. Describe the general structure of a nerve. b. Define ganglion and indicate the general body location of ganglia. c. Follow the process of nerve regencration. D. Cranial nerves a. Name the 12 pairs of cranial nerves; indicate the body region and structures inner- vated by each. E. Spinal nerves a Describe the general structure of a spinal nerve and the general distribution of b. Define plexus, Name the major plexuses and describe the distibution and function raimi. of the peripheral nerves arising from each plexus. F. Motor endings a. Compare and contrast the motor endings of somatic and autonomic nerve fibers G. How does motor activity come about? a. Outline the three levels of the motor hierarchy Compare the roles of the cerebellum and basal nuclei in controlling motor activity. H. The reflex arc a. Name the components of a reflex arc and distinguish between autonomic and so- matic reflexes a. Compare and contrast stretch, flexor, crossed-extensor, and tendon reflexes. b. Describe two superficial reflexes. L. Spinal reflexes

Explanation / Answer

D.

E,

a.

b,

G,

a, The three levels of hierachy is the following

CRANIAL NERVES ORIGIN STRUCTURE INNERVATED AND BODY REGION 1 OLFACTORY NERVE Nasal chamber (sensory nerve) Olfactory bulb via olfactory epithelium 2 OPTIC NERVE Retina for vision (sensory nerve) Diencephalon 3 OCULOMOTOR NERVE Cerebral peduncle

1. Superior, inferior,middle rectus, inferior oblique, levetor palpebrae (Motor fiber)
2. Ciliary ganglion via parasympathetic fiber

4 TROCHLEAR NERVE Cerebral peduncle (Motor nerve) Superior oblique eye muscle 4 TRIGEMINAL NERVE Side of medulla

1. Face, scalp,cornea, nasal and oral cavity, cranial dura matter (sensory nerve)
2. Muscles of mastication and tensor tympani muscle (Motor nerve)

5 ABDUCENS NERVE Ventral side of medulla

1. Lateral rectus for the movement of eyeball (Motor nerve)

6 FACIAL NERVE Side of medulla

1. 2/3 part of anterior tongue (Sensory)
2. Muscles of facial expression and stapedius muscle (Motor nerve)
3. Salivary and lacrimal glands via parasympathetic nerve

7 VESTIBULOCOCHLEAR NERVE Side of medulla

1. Cochlea and vestibular apparatus (Sensory nerve

8. GLOSSOPHARYNGEAL NERVE SIDE OF MEDULLA

1. Eustachian tube, middle ear, carotid body, sinus, pharynx, posterior 1/3 of the tongue (Sensory nerve)
2. Styropharyngeous (Motor nerve)
3. Salivary glands via parasympathetic nerve

9. VAGUS NERVE Side of medulla

1. Pharynx, larynx, oesophagus, aortic bodies and arch, thoracic and abdominal viscera (Sensory nerve)
2. Larynx, pharynx and upper oesophagus via motor nerve
3. Cardiovascular, respiratory and gi tract via parasympathetic nerve

10, ACCESORY NERVE Side of medulla sterno mastoid and trapezius for the movement of head and shoulder (motor nerve) 11, HYPOGLOSSAL NERVE Side of medulla Intrinsic and extrinsic muscles of tongue (Motor nerve)

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