Test 125 (Ocular anatomy)
1. Parasympathetic innervation of the lacrimal gland travel through the following structures: a. styloid foramen b. pterygopalatine fossa c. greater petrosal nerve d. geniculate ganglion e. chorda tympani Answera.F b.T c.T d.T e.F The parasympathetic nerve to the lacrimal gland begins at superior salivary nucleus and travels through nervus intermedius, the geniculate body, greater petrosal nerve, pterygoid canal, pterygopalatine fossa, zygomaticotemporal nerve and finally the lacrimal gland before reaching the lacrimal gland.
a. styloid foramen b. pterygopalatine fossa c. greater petrosal nerve d. geniculate ganglion e. chorda tympani Answera.F b.T c.T d.T e.F The parasympathetic nerve to the lacrimal gland begins at superior salivary nucleus and travels through nervus intermedius, the geniculate body, greater petrosal nerve, pterygoid canal, pterygopalatine fossa, zygomaticotemporal nerve and finally the lacrimal gland before reaching the lacrimal gland.
b. pterygopalatine fossa
c. greater petrosal nerve
d. geniculate ganglion
e. chorda tympani
2. With regard to normal eyelashes: a. the eyelashes intertwine during lid closure b. there are twice as many eyelashes in the upper than in the lower lid c. the eyelashes of the upper lid are longer d. the eyelashes take 3 to 5 months to grow e. the glands of Zeiss open into the hair follicles of eyelashes. Answera.F b.T c.T d.T e.T The eyelashes curved away from the eyes and therefore they do not intertwine when the lid is closed. 3. The following are true about orbicularis oculi: a. the orbital part is responsible for blinking b. contraction of the palpebral part of the orbicularis oculi is important in tear drainage. c. it is innervated by the facial nerve d. paralysis causes ectropion e. paralysis causes upper lid retraction Answera.F b.T c.T d.T e.T The palpebral part is responsible for blinking whereas the orbital part is responsible for shutting the eye tight. .
2. With regard to normal eyelashes: a. the eyelashes intertwine during lid closure b. there are twice as many eyelashes in the upper than in the lower lid c. the eyelashes of the upper lid are longer d. the eyelashes take 3 to 5 months to grow e. the glands of Zeiss open into the hair follicles of eyelashes. Answera.F b.T c.T d.T e.T The eyelashes curved away from the eyes and therefore they do not intertwine when the lid is closed.
a. the eyelashes intertwine during lid closure b. there are twice as many eyelashes in the upper than in the lower lid c. the eyelashes of the upper lid are longer d. the eyelashes take 3 to 5 months to grow e. the glands of Zeiss open into the hair follicles of eyelashes. Answera.F b.T c.T d.T e.T The eyelashes curved away from the eyes and therefore they do not intertwine when the lid is closed.
b. there are twice as many eyelashes in the upper than in the lower lid
c. the eyelashes of the upper lid are longer
d. the eyelashes take 3 to 5 months to grow
e. the glands of Zeiss open into the hair follicles of eyelashes.
3. The following are true about orbicularis oculi: a. the orbital part is responsible for blinking b. contraction of the palpebral part of the orbicularis oculi is important in tear drainage. c. it is innervated by the facial nerve d. paralysis causes ectropion e. paralysis causes upper lid retraction Answera.F b.T c.T d.T e.T The palpebral part is responsible for blinking whereas the orbital part is responsible for shutting the eye tight. .
a. the orbital part is responsible for blinking b. contraction of the palpebral part of the orbicularis oculi is important in tear drainage. c. it is innervated by the facial nerve d. paralysis causes ectropion e. paralysis causes upper lid retraction
b. contraction of the palpebral part of the orbicularis oculi is important in tear drainage.
c. it is innervated by the facial nerve
d. paralysis causes ectropion
e. paralysis causes upper lid retraction
Answera.F b.T c.T d.T e.T The palpebral part is responsible for blinking whereas the orbital part is responsible for shutting the eye tight. .
4. The short ciliary nerves supply: a. the dilator pupillae b. the sphincter pupillae c. the cornea d. the ciliary muscle e. the lens Answera.F b.T c.F d.T e.F The short ciliary nerves supply the sphincter pupillae and the ciliary muscle. The long ciliary muscle nerves supply the dilator puillae and the cornea. The lens has no innervation. 5. A lesion in the inferior division of the oculomotor nerve results in: a. ptosis b. dilated pupil c. problem with accommodation d. hypertropia e. lateral deviation of the globe. Answera.F b.T c.T d.T e.T The superior division of the oculomotor nerve supplies the levator and the superior rectus whereas the inferior division supplies the inferior rectus, medial rectus and inferior oblique. It also carries the parasympathetic neurones. More MCQs
a. the dilator pupillae b. the sphincter pupillae c. the cornea d. the ciliary muscle e. the lens Answera.F b.T c.F d.T e.F The short ciliary nerves supply the sphincter pupillae and the ciliary muscle. The long ciliary muscle nerves supply the dilator puillae and the cornea. The lens has no innervation.
b. the sphincter pupillae
c. the cornea
d. the ciliary muscle
e. the lens
5. A lesion in the inferior division of the oculomotor nerve results in:
a. ptosis b. dilated pupil c. problem with accommodation d. hypertropia e. lateral deviation of the globe. Answera.F b.T c.T d.T e.T The superior division of the oculomotor nerve supplies the levator and the superior rectus whereas the inferior division supplies the inferior rectus, medial rectus and inferior oblique. It also carries the parasympathetic neurones.
b. dilated pupil
c. problem with accommodation
d. hypertropia
e. lateral deviation of the globe.
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