7. Sensory Organs MCQs

CHOOSE BETWEEN YES OR NO:

The olfactory nerves take information to the brain bypassing the thalamus.

YES OR NO

YES

CHOOSE BETWEEN YES OR NO:

The sense of smell is analyzed in the gyrus postcentralis.

YES OR NO

NO

CHOOSE BETWEEN YES OR NO:

The optic nerve carries information from the nasal mucosa to the brain.

YES OR NO

NO

CHOOSE BETWEEN YES OR NO:

Stratum plexiforme internum of the retina contains the processes of bipolar and ganglionic cells.

YES OR NO

YES

CHOOSE BETWEEN YES OR NO:

Eminentia pyramidalis in tympanic cavity contains m. stapedius.

YES OR NO

YES

CHOOSE BETWEEN YES OR NO:

The pupil is small if the stellate ganglion is removed from the neck of the first rib.

YES OR NO

YES

CHOOSE BETWEEN YES OR NO:

Fovea of the retina contains no blood vessels.

YES OR NO

YES

CHOOSE BETWEEN YES OR NO:

Taste cells are continually reproduced and do not diminish much with age.

YES OR NO

YES

CHOOSE BETWEEN YES OR NO:

The round window equalizes pressure between the middle ear and inner ear.

YES OR NO

YES

CHOOSE BETWEEN YES OR NO:

Olfactory nerve fibres terminate in the trigonum olfactorium.

YES OR NO

NO

CHOOSE ONE CORRECT ANSWER:

Schlemm's canal is located in:

A. lens

B. processus ciliaris

C. sclera

D. iris

E. chorioidea

C. sclera

CHOOSE ONE CORRECT ANSWER:

Macula lutea:

A. is composed mostly of pigment cells

B. contains no neuroepithelial cells

C. is the site of best vision

D. is the blind spot of the eye

C. is the site of best vision

CHOOSE ONE CORRECT ANSWER:

Which of the following helps maintain proper air pressure in the middle ear?

A. stapedius muscle

B. eustachian tube

C. external auditory meatus

D. osseous labyrinth

B. eustachian tube

CHOOSE ONE CORRECT ANSWER:

Which of the following muscles does NOT take its origin from the common tendinous ring?

A. superior rectus

B. inferior rectus

C. lateral rectus

D. medial rectus

E. superior oblique

E. superior oblique

CHOOSE ONE CORRECT ANSWER:

Which of the following muscles is NOT innervated by the oculomotor nerve?

A. levator palpebrae superioris

B. lateral rectus

C. medial rectus

D. inferior oblique

E. superior rectus

B. lateral rectus

CHOOSE ONE CORRECT ANSWER:

Which of the following is true in respect to the ciliary ganglion?

A. Sympathetic fibers synapse in the ciliary ganglion.

B. Afferent fibers from the iris and cornea pass through the ganglion.

C. The ganglion is located between the optic nerve and medial rectus.

D. Parasympathetic fibers in the ganglion are derived from CN VII.

E. Parasympathetic fibers in the ganglion are distributed to the retina and lens.

B. Afferent fibers from the iris and cornea pass through the ganglion.

CHOOSE ONE CORRECT ANSWER:

Which of the following is associated with equilibrium?

A. vestibular membrane

B. basilar membrane

C. otolithic membrane

D. ciliary processes

C. otolithic membrane

CHOOSE ONE CORRECT ANSWER:

Which of the following is NOT contained in the tympanic cavity?

A. auditory ossicles

B. tympanic plexus

C. chorda tympani nerve

D. lesser petrosal nerve

E. stapedius and tensor tympani muscles

D. lesser petrosal nerve

CHOOSE ONE CORRECT ANSWER:

The portion of the inner ear that detects sounds, is the:

A. semicircular canals

B. osseous labyrinth

C. vestibule

D. cochlea

D. cochlea

CHOOSE ONE CORRECT ANSWER:

Which of the following is the first to come into contact with light?

A. Rods

B. Bipolar neurons

C. Cones

D. Ganglion cells

D. Ganglion cells

CHOOSE ONE CORRECT ANSWER:

The maculae can be found in the:

A. cochlear duct

B. saccule

C. semicircular canals

D. semicircular ducts

B. saccule

CHOOSE ONE CORRECT ANSWER:

Vitrous Humor:

A. Is constantly circulated through the posterior cavity

B. Is less viscous than aqueous humour

C. Helps to hold the lens and retina in place

D. Does not contribute to intraocular pressure

E. Does not change the path of incoming light

E. Does not change the path of incoming light

CHOOSE ONE CORRECT ANSWER:

Which of the following cannot be seen as one looks into the eye through an ophthalmoscope?:

A. macula lutea

B. optic chiasm

C. fovea centralis

D. optic disc.

B. optic chiasm

CHOOSE ONE CORRECT ANSWER:

Which one of the following is the correct sequence for the passage of a nerve impulse?:

1. Primary visual cortex

2. Optic tract

3. Optic nerve

4. Optic chiasma

5. Visual association area

A. 3, 4, 2, 1, 5

B. 1, 2, 3, 4, 5

C. 2, 3, 4, 1, 5

D. 5, 1, 2, 4, 3

E. 4, 3, 2, 5, 1

A. 3, 4, 2, 1, 5

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

The following are true about the iris:

A. it contains pigmented epithelium on its anterior surface.

B. it contains melanocytes in the stroma that determines the iris colour

C. its colour is determined by sympathetic innervations

D. the dilator muscle is innervated by the sympathetic system

E. the constrictor muscle is innervated by the parasympathetic system

A. F

B. T

C. T

D. T

E. T

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

The tympanic cavity (middle ear):

A. has the auditory (Eustachian) tube opening on to its anterior wall

B. is about 1.5 cm from its lateral to its medial wall

C. has the facial nerve running in the upper edge of its medial wall

D. is lined by stratified squamous epithelium

E. is related through its roof to the temporal lobe of the cerebral hemisphere.

A. T

B. F

C. T

D. F

E. T

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

The following structures are associated with the auditory pathway from the internal ear to the cerebral cortex:

A. the cochlear nuclei in the hindbrain

B. the medial geniculate body

C. the lateral lemniscus

D. the inferior temporal gyrus

E. the anterior limb of the internal capsule.

A. T

B. T

C. T

D. F

E. F

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

The optic chiasm:

A. is anterior to the stalk of the hypophysis cerebri

B. is lateral to the internal carotid artery

C. contains fibers from the bipolar neurons of the retina

D. contains fibers which end in the lateral geniculate body

E. contains crossed fibers associated with the nasal fields of vision.

A. T

B. F

C. F

D. T

E. F

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

An optic tract:

A. contains fibres whose cell bodies are in the retina

B. contains fibres from the medial half of each retina

C. contains fibres all of which end in the lateral geniculate body

D. contains fibres which form the inferior brachium

E. contains fibres which form the afferent pathway of the light reflex.

A. T

B. F

C. F

D. F

E. T

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

The right visual cortex:

A. lies on either side of the edges of the calcarine sulcus

B. receives the termination of fibers whose cell bodies are in the lateral geniculate body

C. has a very large area for the macula in its anterior part

D. receives impulses originating from stimuli from the right halves of both visual fields

E. receives impulses from the right lower quadrants of both retinae.

A. T

B. T

C. F

D. F

E. T

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

The following structures are associated with the pathway of proprioception from the periphery to the cerebral cortex:

A. the posterior root ganglion

B. lamellated (Pacinian) corpuscles

C. the parietal lobe of the cerebral hemisphere

D. the genu of the internal capsule

E. the medial lemniscus

A. T

B. T

C. T

D. F

E. T

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

The mastoid antrum:

A. has the posterior semicircular canal on its medial side

B. has its aditus on its lateral wall

C. in the infant is separated from the surface of the skull by bone 6 mm thick

D. is related posteriorly to the cerebellum

E. is posterolateral to the facial nerve.

A. T

B. F

C. F

D. T

E. T

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

Parasympathetic nerves in the thorax:

A. cause contraction of the muscle in the lung

B. supply sensory fibres to the lung

C. are secretomotor to the oesophagus

D. cause the longitudinal muscle of the oesophagus to relax

E. supply sensory fibres to the pericardium.

A. T

B. T

C. T

D. F

E. T

INDICATE THE FOLLOWING STATEMENTS WITH TRUE (T) OR FALSE (F):

Middle ear infection may follow a throat infection because:

A. the auditory (Eustachian) tube opens into the base of the inner ear

B. the pharyngeal (throat) mucosa is continuous with the mucosa of the middle ear

C. the sphenoid sinus opens into the tympanic cavity of the middle ear

D. the vestibulocochlear nerve passes through the tympanic cavity

E. answers A and D.

A. F

B. T

C. F

D. F

E. F

FILL THE BLANK SPACES WITH APPROPRIATE WORDS OR PHRASES:

The region on the retina that produces the sharpest vision is called the _______________.

Fovea centralis

FILL THE BLANK SPACES WITH APPROPRIATE WORDS OR PHRASES:

The _____ is a membrane covering the anterior portion of the eyeball except for the cornea.

Conjunctiva

FILL THE BLANK SPACES WITH APPROPRIATE WORDS OR PHRASES:

Most olfactory receptors are located on the ______ surface of the nasal cavity.

Epithelial.

FILL THE BLANK SPACES WITH APPROPRIATE WORDS OR PHRASES:

The ciliary muscle is supplied by the___________.

Occulomotor nerve

FILL THE BLANK SPACES WITH APPROPRIATE WORDS OR PHRASES:

The outer covering of the eye is called the _______.

Sclera

FILL THE BLANK SPACES WITH APPROPRIATE WORDS OR PHRASES:

Blind spot of the eye is known as _________.

Discus nervi optici

FILL THE BLANK SPACES WITH APPROPRIATE WORDS OR PHRASES:

The stapes sends its vibrations to the _______.

Oval window

FILL THE BLANK SPACES WITH APPROPRIATE WORDS OR PHRASES:

The membranous labyrinth contains _____fluid.

Endolymph fluid.

MATCH EACH NUMBERED TERM WITH THE MOST PROPER LETTERED ONE:

Which of the following A to F supplies the structures 1 to 6?

A. Sphenopalatine ganglion

B. Ciliary ganglion

C. Otic ganglion

D. Superior cervical ganglion

E. Submandibular ganglion

F. None of these

1. Ciliary muscle

2. Parotid gland

3. Sublingual gland

4. Sphincter pupillae

5. Lacrimal gland

6. Levator palpebrae superioris muscle

A. 5

B. 1, 4

C. 2

D. 3

E. 6

MATCH EACH NUMBERED TERM WITH THE MOST PROPER LETTERED ONE:

Which of the following A to E supplies the structures 1 to 13? (Note: Items A through E may be used more than once.)

A. gustatory cells

B. macula lutea

C. crista ampullaris

D. macula

E. spiral organ (organ of Corti).

1. A group of hair cells associated with taste.

2. The gelatinous membrane associated with this group of hair cells contains crystals of calcium carbonate.

3. A group of hair cells located in the saccule.

4. A group of hair cells associated with a cupola

5. The sense organ of static equilibrium. 6. A group of hair cells located in the utricle.

7. Hair cells located on the vallate and fungiform papillae.

8. A group of hair cells associated with the tectorial membrane.

9. The sense organ of dynamic (angular) equilibrium.

10. A group of hair cells located in the cochlea duct.

11. The sense organ of hearing.

12. A yellowish group of cells surrounding the fovea centralis.

13. A group of hair cells located in the ampulla.

A. 1, 7

B. 12

C. 4, 9, 13

D. 2, 3, 5, 6

E. 8, 10, 11

MATCH EACH NUMBERED TERM WITH THE MOST PROPER LETTERED ONE:

Which of the following A to D supplies the structures 1 to 9? (Note: Items A through D may be used more than once.)

A. Ganglion cells

B. Bipolar cells

C. Both A and B

D. Neither A nor B.

1. Contact the vitreous humor.

2. Contain the purple pigment known as rhodopsin.

3. Modified forebrain cells.

4. Axons of these cells form the optic nerve.

5. Contact the choroid layer.

6. Cells contain melanin.

7. Cells are multipolar neurons.

8. These cells synapse with ganglion cells.

9. These cells provide daylight vision.

A. 1, 4, 7

B. 8

C. 1, 4, 7, 8

D. 2, 3, 5, 6, 9

MATCH EACH NUMBERED TERM WITH THE MOST PROPER LETTERED ONE:

Match the type of fluid (Endolymph or Perilymph) that is found within the cavities or spaces of the appropriate structures. Items A and B may be used more than once.

A. Perilymph

B. Endolymph

1. Scala vestibuli.

2. Cochlear duct.

3. Semicircular ducts.

4. Utricle.

5. Scala tympani.

6. Vestibule.

7. Semicircular canals.

8. Saccule.

A. 1, 5, 6, 7

B. 2, 3, 4, 8