DETAKEMENT FINAL EXAM-FALL 201 ies of the peripheral dervous system are located

Question

DETAKEMENT FINAL EXAM-FALL 201 ies of the peripheral dervous system are located in Schwann celfs the motor cav vision." the se E, ganglia vision. 2. The central nervous system A. i tptally involuntary B. initijates visual and auditury stimuli, C. consists of 43 pairs of nerves. is the site for processing information E does not interact with the peripheral nervous system 3. Voltage-regulated channcils can be found A. at the motor end plate on the surfaces of dendrites in the membrane that covers axons. on the soma of neurons. E, along the perikaryon of neurons. 4The sensory neurons responsible for delivering pain to the brain are A. unipolar bipolar multipolar. pseudopolar E. None of these choiocs is correct. 5. A neuroglial cell that is a major component of the myelination of axons in the seana astrocyte microglial cel. C oligodendrocyte D. ependymal cell. E. macrophage. / 6. The spinal cord begins from the A. cerebellum modulla oblongata medulla oblongata . midbrain.

Explanation / Answer

1. Ans is E, ganglia. The cell bodies of peripheral nervous system are clustered together and form a ganglia.

2. Ans is D , Central nervous system integrate the information and respond accordingly. It consist of two part brain and spinal cord. This system process and interpret all the information coming from sensory organs.

3. Answer is C, voltage regulated channel can be found in the membrane that cover axons. These are the ion channel that open and close in response to change in membrane potetial.

5. Answer is C, oligodendrocyte is a main componant that responsible for mylination of axon in central nervous system. These are the glial cells that produce myelin.

8. Answer is C, subarachanoid space. Lumber puncher is called spinal tap in which cerebrospinal fluid is obtained as a sample in invasive procedure from subarachanoid space in spine. This procedure is used to detect abnormal cell and any kind of tumor, bleeding and viral infection in cerebrospinal fluid.

10. Answer is D, plexus. Ventral ramus is present in the anterior region of spinal nerve. Ventral ramus along with dorsal ramus and rami communication carries both sensory and motor information.

11. Answer is D, musculocutaneous. Brachial plexus is a network of nerve that formed by anterior rami of thorocic and cervical nerves. musculocutaneous and median nerve are well connected and arise from lateral node. These are the branches of brachial plexus.

15. Answer is C, midbrain. nuclei of cranial nerve is located in midbrain. A superior part of brain stem that divided into posterior and anterior portion. Cranial nerve 3 and 4 that is oculomotor and trochlear nerve that involve in motor movement of eye.

16. Answer A, basal nuclei. Substantia nigra interconnect with basal nuclei. It is also called basal ganglia, a collection of nuclei present in the different portion of brain. In substantia nigra, located in upper portion of midbrain, below the thalamus. Its one part help in sending signal to striatum.

17. Answer is B, photoreceptor. Light that entered into eye is recieve by photoreceptor, a specialized cell that convert light signal to the signal that perform biological process. It involve in transduction to generate a vision.

18. Answer is C, Chemoreceptor. A receptor that detect change in chemical concentration. it covert chemical signal to electrical signal.

19. Answer is B, deep cutaneous pressure and vibration. Pacinion corpuscles is a onion shaped structure located in dermis, subcutaeneous etc in verious part of body.

21. Answer is E, hesistancy to speech pattern. Broca area is present in left frontal lobe that is responsible for language production and communication. damage of this area cause hesistancy in speech pattern.

22 Answer is B Filiform papillae no taste bud present

23. Answer is E Foliate papillae contain most sensitive taste bud

24 Answer is D quinin(tonic water)

25. Answer is A Because tears drains into nasal cavity via nasolacrimal ducts.

26. Answer is A colour vision is function of cone cells

28. Answer is C. short postganglionic axon near the organ they innervate

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