Question : The optic chiasm: * a) Forms the floor of the recess of the third ventricle * b) is inferior to the medial root of the olfactory tract * c) Has the internal carotid artery as its immediate lateral relation * d) Has the mamillary bodies lying immediately posterior to it * e) Is in close relation to the oculomotor nerve inferiorly
True statement about the facial nerve includes: a) Its nucleus is in the floor of the fourth ventricle * b) Its fibres reach the surface of the brain in the cerebellopontine angle * c) Transmits taste fibres for the anterior half of the tongue * d) Gives the deep petrosal nerve as branch to the sphenopalatine ganglion * e) Has a sensory component that supplies the outer ear
The following are true about cerebrospinal fluid: * a) It is found in the space between the pia mater and the arachnoid * b) The normal amount in human being is about 500 ml * c) With the body lying in lateral horizontal position, the normal intracranial pressure is about 100 ml of water * d) Only, the lateral ventricle contains choroidal plexus, which secrete cerebrospinal fluid * e) Cerebrospinal fluid contains the same concentration of glucose as the blood
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