Questions on the Nervous System

Questions on the Nervous system

I-Define

-propriceptors

- irritability

- conductivity

- polarized membrane

- cranial nerve

- spinal nerve

- acetylcholine

- vagus nerve

II- Mention in short

- the three overlapping functions of the nervous system

- the very important system in homeostasis

- structural classification of nervous system

- functionalclassification of nervous system

- classification of the motor nervous system

- the two principle types of nerve cells and function of each

- common structure of neuron

- the complex receptors

- the simple receptors

- structural classification of neurons

- the lobes of cerebral hemisphere

- importance of central sulcus as anatomical landmark

- parts of brain stem

- structures that control CNS from outside to inside

- types of meninges

- centers present in medulla oblongata

- the names of spinal nerve plexuses

- differences between somatic and autonomic nervous systems

- body structures that receive only sympathetic fibers

- organs supplied by ANS

III- Complete

-the master controlling and communicating system is------

- the second system important in body homeostasis

- the nerve fibers that convey impulses from sensory receptors to CNS is called ------while that carry it from CNC to effector organs called------

- the effector organs in our body are------and------

- nervous system under voluntary control is called------while that involuntary is called------

- ANS is subdivided into ------and------

- supporting cells in CNS are called------

- the nerve cell that carry impulses is called------

- the cell body of neuron contains the usual organelles except------

- neuron processes that convey messages toward thje cell body are called------while that conduct it away from cell body are------

- all axons branch at their terminal end to form ------,these contain vesicles that contain chemicals called------

- the axonal terminal is separated from the next neuron by a tiny gap called------

- the whitish, fatty material that covers long nerve fibers is called------

- axons outside the CNS are myelinated by ------cells

- clusters of cell bodies in CNS is called------while that outside it called------

- neuron processes running in CNS are called------while that outside it called--- the CNS is composed of------and------

- white matter consists of ------while grey matter of------and------

- cell bodies of afferent and association neurons are always found in------

- the two major functions of neurons are------and------

- when the inside of neuron is more positive and the outside is less positive ,the case is called------

- adequate stimulation of neuron opens the ------in its membrane

- reflexes that regulate involuntary muscles and glands are called------while those stimulate skeletal muscles are called------

- the first appearance of nervous system is called------,its anterior end begins to expand at the ------week

- the central canal of the neural tube enlarges in four regions of the brain called-----

- elevated ridges on brain surface are called------while depressions are called------

- the cerebral hemispheres are separated by deep fissure called------

- the relay station for sensory impulses inthe brain is called ------

- the------hangs from the anterior floor of hypothalamus

- the ------are knots of capillaries within each ventricle, it forms CSF

- the ------plays a role inconsciousness and the awake/sleep cycles

- the------controls balance and equilibrium

- CSF returns to the blood through ------

- the most inferior part of the brain stem is called------

- the number of spinal nerves is------pairs

-the collection of spinal nerves at the inferior end of vertebral canal is called------

- the best site for GSF tapping is below------

- spinal nerve is formed by fusion of ------

- spinal nerve ,after being formed, divides into ------

- the only cranial nerve that extends to thorax and abdomen is------

- most cranial nerves are ------,there are three pure sensory , they are ------

- the external eye muscles are supplied by cranial nerves ------

- muscles of facial expression are supplied by------

- the ventral rami of some spinal nerves form network of nerves called------

- the outermost layer of meninges is------

- the spinal cord extends from------to------lumber vertebra

- the motor subdivision of the PNS that controls activities automatically is called---

- the autonomic nervous system is subdivided into ------

- the sympathetic division is also called------while parasympathetic is called---

- fight –or- flight system is ------while house keeping is------

- the first cranial nerve is------while the seventh is------

- the second cranial nerve is ------while the VIII is------

IV- Put True or False

- myelin increases the transmission rate of impulses

- cell bodies of afferent neurons are always found in ganglia outside CNS

- the plasma membrane in inactive neuron is polarized

- the nerve impulse is all-or-none response

-until repolarization occurs,a neuroncannot conduct another impulse

- transmission of an impulse is only electrical event

- some reflexes involve only spinal cord

-some reflexes involve the brain

- grey matter in the brain is deep

- the ANS is also called involuntary nervous system

- CSF is continuously moving

- the fourth ventricle of the brain is continuous with the central canal of spinal cord

- the blood-brain barrier is the least permeable capillaries in the body

- meningeal covering do not end at L2

- there is no possibility of damaging the cord below L3

- the central canal of spinal cord contains CSF

- grey matter of spinal cord surrounds the central canal

- cranial nerves primarily serves head and neck

- spinal nerve and both rami are mixed nerves

- the arms of ANS serve the same organ but has opposite effects

- the parasympathetic fibers are cholinergic

- sympathetic fibers are adrenergic

- the last area of the brain to mature is hypothalamus

- neurons die throughout life are not replaced

- brain growth ends in young adults

- maternal and environmental factors may impair embryonic brain development

IV-Match table A with table B

Table A( )-thalamus Table 1-control balance and equilibrium

( )-hypothalamus 2-plays a role in the awake/sleep cycles

( )-brain stem 3-crude recognition of sensation

( )-cerebellum 4-plays a role in temperature regulation

( )-postcentral gyrus 5-primary motor area

6-primary sensory area

TableA ( )-olfactory TableB1-extends to thorax and abdomen

( )-oculomotor 2-purely sensory

( )-facial 3-supplies muscles of facial expression

( )-vagus 4-branch of cervical plexus

( )-phrenic 5-supplies eye muscles

6-spinal nerve

TableA Table B

( )-Olfactory nerve a-activates facial muscles

( )-Vagus b-first cranial nerve

( )-Trigeminal c-nerve of hearing and equilibrium

( )-Vestibulococlear d-supplies thoracic and abdominal viscera

( )-Facial e-fifth cranial nerve

f-motor nerve for the tongue