46. The diencephalon:
a. forms part of the prosencephalon
b. is related inferiorly to the rhombencephalon
c. consists of 3 pairs of nuclei and the pineal gland
d. is divided into symmetrical halves by the 3rd ventricle
e. is related on its ventral aspect to the optic chiasm
47. The lateral geniculate nucleus:
a. is part of the auditory pathway
b. is made up of 8 laminae of neurones
c. contralateral retinal fibres terminate in laminae I, IV & VI
d. ipsilateral retinal fibres terminate in laminae I, III & V
e. ipsilateral retinal fibres terminate in laminae II, III & VI
48. The internal capsule:
a. is formed from grey matter
b. has projection fibres known as the corona radiata
c. is medially related to the tail of the caudate anteriorly and the
thalamus posteriorly
d. is laterally related to the lentiform nucleus
e. consists of an anterior limb, genu, posterior limb, retrolentiform
and sublentiform parts
49. The Medial Longitudinal Fasciculus:
a. arises in the vestibular nucleus in the pons
b. ascends close to the midline in the pons and midbrain and is
closely related to the floor of the 4th ventricle
c. is involved in conjugate eye movements
d. is an ipsilateral tract
e. when demyelinated can lead to intranuclear ophthalmoplegia
f. when demyelinated does not allow convergence to occur
50. The Internal carotid artery:
a. enters the skull via the carotid canal and enters the middle
cranial
fossa by exiting the foramen lacerum
b. runs forward in the superior part of the cavernous sinus
c. pierces dura to run in the subdural space
d. has a sympathetic plexus within its walls
e. branches into anterior and posterior hypophyseal arteries that
supply the pituitary gland