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. all above

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. all above
by

1 Answer

Answer :

all above
by

Related questions

Which of the following anatomical considerations is correct: A. optic chiasm lesions characteristically produce a bitemporal hemianopia B. central scotoma occurs early in papilloedema C. in cortical blindness pupillary reactions are abnormal D. optic tract lesions produce an ipsilateral homonymous hemianopia E. opticokinetic nystagmus is found with bilateral infarction of the parieto-occipital lobes

Description : Which of the following anatomical considerations is correct: A. optic chiasm lesions characteristically produce a bitemporal hemianopia B. central scotoma occurs early in papilloedema C. in ... hemianopia E. opticokinetic nystagmus is found with bilateral infarction of the parieto-occipital lobes

Last Answer : Ans: A

Which of the following anatomical considerations is correct: A. optic chiasm lesions characteristically produce a bitemporal hemianopia B. central scotoma occurs early in papilloedema C. in cortical blindness pupillary reactions are abnormal D. optic tract lesions produce an ipsilateral homonymous hemianopia E. opticokinetic nystagmus is found with bilateral infarction of the parieto-occipital lobes

Description : Which of the following anatomical considerations is correct: A. optic chiasm lesions characteristically produce a bitemporal hemianopia B. central scotoma occurs early in papilloedema C. in ... hemianopia E. opticokinetic nystagmus is found with bilateral infarction of the parieto-occipital lobes

Last Answer : Ans: A

The ciliary ganglion: a. is found between the optic nerve and the medial rectus b. contains sympathetic nerve that supplies the sphincter pupillae c. is a parasympathetic relay ganglion for fibers from the Edinger-Westphal nucleus d. contains sensory nerve e. has a motor nerve that goes to the inferior oblique

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Last Answer : is a parasympathetic relay ganglion for fibers from the Edinger-Westphal nucleus

The following are yoke muscles: a. right medial rectus and left lateral rectus b. right inferior rectus and left superior rectus c. right superior rectus and left inferior oblique d. right superior oblique and left inferior rectus

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In the inferior alveolar block the needle goes through or close to which muscles: A. Buccinator and superior constrictor B. Medial and lateral pterygoid C. Medial pterygoid and superior instructor D. Temporal and lateral pterygoid E. Temporal and medial pterygoid

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As far as surgical removal of wisdom teeth is concerned which of the following is true? a- Prophylactic prescription of antibiotic reduces dramatically the chances of infection. b- Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve. c- Prophylactic prescription of dexamethasone will dramatically reduce post operative swelling. d- Inferior dental nerve injury is unlikely since the nerve passes medial to the wisdom tooth root. e- The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

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As far as surgical removal of wisdom teeth is concerned, which of the following is true?**CHECK A. Prophylactic prescription of antibiotic reduces dramatically the chances of infection B. Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve ADC M07 C. Prophylactic prescription of dexamethasone will dramatically reduces post operative swelling D. Inferior dental nerve injury is unlikely since the nerve passes medial to the wisdom tooth root E. The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

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The globe: a. is closer to the orbital floor than the roof b. is closer to the lateral wall of the orbital cavity than to medial wall c. has a vertical diameter less than the anteroposterior diameter d. has an anterior segment which form 1/4 of the circumference e is least protected laterally

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When the neck of the condyle is fractured; what muscle determines the movement of the superior segment: A. Lateral pterygoid B. Medial pterygoid C. Masseter D. Temporalis E. Mylohyoid

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When the neck of the condyle is fractured; what muscle determines the movement of the superior segment: A. Lateral pterygoid B. Medial pterygoid C. Temporalis D. Mylohyoid

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With regard to the lacrimal drainage system: a. the upper lacrimal punctum is lateral to the lower punctum b. the lacrimal canaliculi are lined by stratified squamous epithelium c. nasolacrimal duct is narrowest at the lowest end d. nasolacrimal duct runs downwards, lateral and forwards to the anterior part of inferior meatus e. congenital blockage is due mainly to delay development of common canaliculus

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.Lateral canals are usually found at: A. The middle of the root B. First third of the root close to the crown C. The apical third

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True statement about the facial nerve include: 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. all above

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If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non- functional, what will be the immediate effect? (a) The flow of blood into the aorta will be slowed down. (b) The ‘pacemaker’ will stop working. (c) The blood will tend to flow back into the left atrium. (d) The flow of blood into the pulmonary artery will be reduced.

Description : If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non- functional, what will be the immediate effect? (a) The flow of blood into the aorta will be slowed ... back into the left atrium. (d) The flow of blood into the pulmonary artery will be reduced.

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The following are true: a. the ratio of rod to cone is about 20:1 b. there are more ganglion cells in the retina than photoreceptors c. the rod density is the highest nasal to the optic disc d. the retinal artery is the main supply of nutrients to the photoreceptors

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A male patient 30 years old with visual acuity of 6/6 in both eyes. Twelve hours ago he presented with drop of vision of the left eye. On examination, visual acuity was 6/6 in the right eye and 6/60 in the left eye. Fundus examination showed blurred edges of the left optic disc. The most probable diagnosis is: a. Raised intra cranial pressure b. Raised ocular tension c. Central retinal artery occlusion d. Optic neuritis

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Homonymous hemianopia is the result of a lesion in: a. Optic chiasma b. Retina c. optic tract d. Optic nerve

Description : Homonymous hemianopia is the result of a lesion in: a. Optic chiasma b. Retina c. optic tract d. Optic nerve

Last Answer : ANSWER: C  

Homonymous hemianopia is due to lesion at: a. Optic tract b. Optic nerve c. Optic chiasma d. Retina e. Occipital cortex

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Last Answer : ANSWER: A

The lateral spinothalamic tract: a. carries fibres which terminate in the thalamus b. contains mainly the second-order neurones. c. carries fibres that carry information on temperature and pain d. all above

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