CNS

Question 1

subdural hermatoma can result from

Answer 1

rupture of a cerebral vein entering the superior sagittal sinus

Question 2

cerebrospinal fluid absorped through

Answer 2

arachnoid villi

Question 3

regeneration of neurons is possible in presence of available blood supply

Answer 3

false

Question 4

Mylenation is necessary for transmission of the nerve impulses

Answer 4

true

Question 5

nucleus of the neurons is normally central in position

Answer 5

true

Question 6

astrocytes form the blood brain barrier( BBB)

Answer 6

true

Question 7

corticospinal tract descend through the posterior limb of the internal capsule

Answer 7

true

Question 8

tectospinal tract responsible for the movement of neck muscles mainly

Answer 8

true

Question 9

vestibulospinal tract is responsible for equilibrium and posture

Answer 9

true

Question 10

lower motor neurons lies in the posterior horn of grey matter

Answer 10

false found in anterior horn of grey matter

Question 11

concerning the thalamus which of the following is true …

A.) VPL(ventral posterior lateral nucleus) receive all
ascending sensory inputs

B.) Lateral geniculate body is the third order neuron of
audition

C.) It related medially to the anterior limb of the internal
capsule

D.) Anterior nucleus is part of the memory processing
circuit

Answer 11

D.

anterior nucleus of thalamus (ANT) is a key component of the hippocampal system for episodic memory. The ANT consist of 3 subnuclei with distinct connectivity with the subicular cortex, retrosplenial cortex, and mammillary bodies

Question 12

concerning the hypothalamus which of the following is false …

A.) It connect to the anterior pituitary via portal system

B.) Paraventricular nucleus release oxytocin

C.) It regulate the body homeostasis

D.) It lies just inferior & lateral to the thalamus

Answer 12

D.

hypothalamus is located on the undersurface of the brain. It lies just below the thalamus and above the pituitary gland

Question 13

hypothalamus is connected to the anterior pituitary via

Answer 13

hypophyseal portal system

within the infundibulum is a bridge of capillaries that connects the hypothalamus to the anterior pituitary this network, called the hypophyseal portal system, allows hypothalamic hormones to be transported to the anterior pituitary without first entering the systemic circulation

Question 14

paraventricular nucleus of the hypothalamus release

Answer 14

Oxytocin

bonding hormone

Question 15

regulates the body homeostasis

Answer 15

hypothalamus

Question 16

regarding the hypoglossal nerve (12th ) which of the following is true …

A.) It is component is SSE

B.) It leave the medulla oblongata via the posterior lateral
aspect

C.) Hypoglossal nucleus locate in the upper medulla close
to the fourth ventricle

D.) It supply the entire muscles of the tongue

Answer 16

C.

hypoglossal nerve (12TH CN) is GSE

hypoglossal nerve (12TH CN) leaves the medulla anterior lateral to pyramids and medial to olives

hypoglossal nucleus is located in tegmentum of upper medulla close to the midline, lying deep to the hypoglossal trigone

hypoglossal nerve supplies …
All of the intrinsic muscles of the tongue.
Three extrinsic muscles of the tongue: the genioglossus, hyoglossus and styloglossus muscles.
As well as the geniohyoid muscle (a suprahyoid muscle

Question 17

loss of tast sensations from the tip of the tongue occurs in lesions of which nerve?

A.)Vagus

B.)Glosso pharyngeal

C.)Facial

D.)Hypoglossal

Answer 17

C.

tip of tongue - 7
middle of tongue - 9
posterior of tongue - 10

Question 18

which of the following nucleus is common to IX, X and XI cranial nerves…

A.) Nucleus ambiguous

B.) Dentate nucleus

C.) Red nucleus

Answer 18

A.

glossopharyngeal
vagus
accessory nerve

Question 19

which of the followings is correct regarding to functions of limbic system…

A.) Is concerned with reward system that is strong factor in learning

B.) Is concerned with understanding of ideas

C.) Is located in the neocortex

D.) Is concerned with understanding meaning of sensory in put

Answer 19

C.

limbic system is a set of structures in the brain that deal with emotions and memory. consists of fornix, hippocampus, cingulate gyrus, amygdala, the parahippocampal gyrus, and parts of the thalamus. The hippocampus is one of the first areas affected by Alzheimer’s disease

Question 20

which of the followings is correct regarding to the Broca’s area…

A.) Site for of processing idea into motor program

B.) Is located in the occipital lobe

C.) Involve motor control area of muscles of the hand

D.) Receives information from auditory area

Answer 20

A.

Broca’s area region in the frontal lobe of the dominant hemisphere, usually the left, of the brain with functions linked to speech production.

Question 21

which of the following cell is responsible for myelination in peripheral nervous system…

A.) Kupffer cell

B.) Fibroblast cell

C.) Mesangial cell

D.) Schwann cell

Answer 21

D. Schwann cell

Question 22

which of the followings is correct regarding the functions of cerebellum..

A.) Is responsible for swinging of upper limbs during
walking

B.) Coordinate movements

C.) Is responsible for initiation of the gross movement

D.) Its lesion cause flaccid paralysis

Answer 22

B. Coordinate movements

Question 23

conserning the motor area of cerebral cortex which of the followings is true…

A.) Is responsible for initiation of gross movement

B.) Control muscle movement via spinothalamic tract

C.) left cortex is concerned with control muscles of the
face right side only

D.) Localized lesion cause complete spastic paralysis

Answer 23

D. Localized lesion cause complete spastic paralysis

Question 24

the visual area is found around the _____ sulcus:

A.) Parieto-occipital

B.) Callosal

C.) Collateral

D.) Calcarine

Answer 24

D. Calcarine

calcarine is part of occipital lobe

Question 25

which of the followings is correct regarding Hemisection of the spinal cord.. A.) Normal sensory functions at the same side at the same level of the lesion B.) Flaccid paralysis at the same side at the same level of the lesion C.) Flaccid paralysis the same side at the above level of the lesion D.) Loss of vibration sense just above the side of the lesion

Answer 25

B Flaccid paralysis at the same side at the same level of the lesion

Question 26

deep cerebellar nuclei include the following except... A.) Embliform nucleus ,fastigial B.) Dentate nucleus C.) Amygdaloid nucleus D.) Globose nucleus

Answer 26

C. Amygdaloid nucleus

Question 27

Which of the following statement concerning the olfactory nerve is false.. A.) It projects directly to the forebrain B.) It synapses with mitral cells +SSA SVA C.) Its GSA nerve D.) It enters the skull via cirbriform plate

Answer 27

C. Its GSA nerve XXXXXXX olfactory nerve is a ?

Question 28

which of the following statement concerning the trigeminal nerve is false... A.) Contains SVE and GSA fibers B.) It innervates the tensor tympani muscle C.) It innervates the supra tectorial dura D.) It innervates the skin over the angle of the jaw

Answer 28

D. It innervates the skin over the angle of the jaw XXXXX trigeminal nerve innervates the muscles of mastication: medial pterygoid, lateral pterygoid, masseter and temporalis. The mandibular nerve also supplies other 1st pharyngeal arch derivatives: anterior belly of digastric, mylohyoid, tensor veli palatini and tensor tympani.

Question 29

which of the following cranial nerve that contains parasympathetic functions? A.) Abducent B.) Facial C.) Trigeminal D.) Vistibulocochlear

Answer 29

B. Facial nerves with parasympathetic fibres include oculomotor nerve facial nerve glossopharyngeal nerve vagus nerve

Question 30

which of the following is not part of basal ganglia... A.) Amygdaloid nucleus B.) Uncus C.) Caudate nucleus D.) Lentiform nucleus

Answer 30

B. Uncus uncus is an anterior extremity of the parahippocampal gyrus

Question 31

which of the following is not white matter of the brain... A.) Internal capsule B.) Foriceps minor C.) Corpus callous D.) Lentiform nucleus

Answer 31

D. Lentiform nucleus lentiform nucleus comprises the putamen and the globus pallidus within the basal ganglia. With the caudate nucleus, it forms the striatum. It is a large, lens-shaped mass of gray matter just lateral to the internal capsule

Question 32

the posterior horn of the spinal cord contains the following nuclei except... A.) Nucleus dorsalis B.) Gracile C.) Proporius D.) Substantiaglatinosa

Answer 32

B.Gracile gracile fasciculus carries sensory information from the lower half of the body entering the spinal cord at the lumbar level. The cuneate fasciculus carries sensory information from the upper half of the body (upper limbs, trunk, and neck) entering the spinal cord at the cervical level

Question 33

which of the following arteries supply the internal capsule... A.) Anterior cerebral B.) Superior cerebellar C. Thalamostriate D.) Posterior cerebral

Answer 33

C. Thalamostriate

Question 34

the main neurotransmitters involved in the mood control are A.) Acetylcholine and dopamine B.) Acetylcholine and nor epinephrine C.) Nor epinephrine and serotonin D.) Serotonin and dopamine

Answer 34

D. Serotonin and dopamine

Question 35

anti psychotic drugs are also known as... A.) Minor tranquillisers B.) Neuroleptics C.) Thymoleptics D.) Hallucinogens

Answer 35

B. Neuroleptics

Question 36

hypnotic drugs are used to treat... A.) Psychosis B.) Sleep disorders C.) Narcolepsy D.) Parkinsonian disorders E.) Epilepsy

Answer 36

B. Sleep disorders

Question 37

The major cause of bacterial meningitis in adults is... A.) S.aglactiae B.) H.influenzae C.) N.meningitidis D.) L.monocytogens E.) S.aureus

Answer 37

C. N.meningitidis

Question 38

what is the main procedure for diagnosis of meningitis ... A.) C.T brain B.) Lumbar puncture for bacteriological investigations C.) MRI for the brain and the spinal cord D.) CBC for total and differential count of the white blood cells E.) Thorough clinical examination looking for Kerning’s sign

Answer 38

B. Lumbar puncture for bacteriological investigations

Question 39

what is the commonest cause of encephalitis... A.) N.meningitidis B.) S.agalactiae C.) Viruses D.) NaegleriafowlerI E.) H.influenzae

Answer 39

C. Viruses

Question 40

a blood film stained with Geimsa stain is the best method for diagnosis of... A.) Meningitis B.) Trypanosomiasis C.) Encephalitis D.) Rabeis E.) Mumps

Answer 40

B. Trypanosomiasis

Question 41

the following is true for tetanus... A.) It is caused by infection of the clostridium bacteria of nervous tissue B.) Is due to septicemia caused by clostridium C.) Is due to the toxin tetanospsmin spreading through the blood D.) Is due to the toxin tetanospsmin ascending through the peripheral nerves E.) Is caused by consumption of contaminated meat

Answer 41

A.) It is caused by infection of the clostridium bacteria of nervous tissue