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Sensory systems

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Sensory System Anatomy 1st Year 2nd Semester PMU

Question 1 of 46

1

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

Select one of the following:

  • True
  • False

Explanation

Question 2 of 46

1

The sense of smell is analyzed in the gyrus postcentralis.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 46

1

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

Select one of the following:

  • True
  • False

Explanation

Question 4 of 46

1

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

Select one of the following:

  • True
  • False

Explanation

Question 5 of 46

1

Eminentia pyramidalis in tympanic cavity contains m.stapedius.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 46

1

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

Select one of the following:

  • True
  • False

Explanation

Question 7 of 46

1

Fovea of the retina contains no blood vessels.

Select one of the following:

  • True
  • False

Explanation

Question 8 of 46

1

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

Select one of the following:

  • True
  • False

Explanation

Question 9 of 46

1

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

Select one of the following:

  • True
  • False

Explanation

Question 10 of 46

1

Olfactory nerve fibres terminate in the trigonum olfactorium.

Select one of the following:

  • True
  • False

Explanation

Question 11 of 46

1

Schlemm’s canal is located in:

Select one of the following:

  • lens

  • processus ciliaris

  • sclera

  • iris

  • chorioidea

Explanation

Question 12 of 46

1

Macula lutea:

Select one of the following:

  • is composed mostly of pigment cells

  • contains no neuroepithelial cells

  • is the site of best vision

  • is the blind spot of the eye

Explanation

Question 13 of 46

1

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

Select one of the following:

  • stapedius muscle

  • Eustachian tube

  • external auditory meatus

  • osseous labyrinth

Explanation

Question 14 of 46

1

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

Select one of the following:

  • superior rectus

  • inferior rectus

  • lateral rectus

  • medial rectus

  • superior oblique

Explanation

Question 15 of 46

1

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

Select one of the following:

  • levator palpebrae superioris

  • lateral rectus

  • medial rectus

  • inferior oblique

  • superior rectus

Explanation

Question 16 of 46

1

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

Select one of the following:

  • Sympathetic fibers synapse in the ciliary ganglion.

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

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

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

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

Explanation

Question 17 of 46

1

Which of the following is associated with equilibrium?

Select one of the following:

  • vestibular membrane

  • basilar membrane

  • otolithic membrane

  • ciliary processes

Explanation

Question 18 of 46

1

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

Select one of the following:

  • auditory ossicles

  • tympanic plexus

  • chorda tympani nerve

  • lesser petrosal nerve

  • stapedius and tensor tympani muscles

Explanation

Question 19 of 46

1

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

Select one of the following:

  • semicircular canals

  • osseous labyrinth

  • vestibule

  • cochlea

Explanation

Question 20 of 46

1

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

Select one of the following:

  • rods

  • bipolar neurons

  • cones

  • ganglion cells

Explanation

Question 21 of 46

1

The maculae can be found in the:

Select one of the following:

  • cochlear duct

  • saccule

  • semicircular canals

  • semicirurlar ducts

Explanation

Question 22 of 46

1

Vitreous humor

Select one of the following:

  • is constantly circulated through the posterior cavity.

  • is less viscous than aqueous humor.

  • helps to hold the lens and retina in place.

  • does not contribute to intraocular pressure.

  • does not change the path of incoming light.

Explanation

Question 23 of 46

1

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

Select one of the following:

  • macula lutea

  • optic chiasm

  • fovea centralis

  • optic disc.

Explanation

Question 24 of 46

1

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

Select one of the following:

  • 3, 4, 2, 1, 5

  • 1, 2, 3, 4, 5

  • 2, 3, 4, 1, 5

  • 5, 1, 2, 4, 3

  • 4, 3, 2, 5, 1

Explanation

Question 25 of 46

5

The following are true about the iris:

Select one or more of the following:

  • it contains pigmented epithelium on its anterior surface.

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

  • its colour is determined by sympathetic innervations.

  • the dilator muscle is innervated by the sympathetic system

  • the constrictor muscle is innervated by the Parasympathetic system.

Explanation

Question 26 of 46

5

The tympanic cavity (middle ear)

Select one or more of the following:

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

  • is about 1.5 cm from its lateral to its medial wall

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

  • is lined by stratified squamous epithelium

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

Explanation

Question 27 of 46

5

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

Select one or more of the following:

  • the cochlear nuclei in the hindbrain

  • the medial geniculate body

  • the lateral lemniscus

  • the inferior temporal gyrus

  • the anterior limb of the internal capsule

Explanation

Question 28 of 46

5

The optic chiasm

Select one or more of the following:

  • is anterior to the stalk of the hypophysis cerebri

  • is lateral to the internal carotid artery

  • contains fibers from the bipolar neuroses of the retina

  • contains fibers which end in the lateral geniculate body

  • contains crossed fibers associated with the nasal fields of vision

Explanation

Question 29 of 46

5

An optic tract

Select one or more of the following:

  • contains fibers whose cell bodies are in the retina

  • contains fibers from the medial half of each retina

  • contains fibers all of which end in the lateral geniculate body

  • contains fibers which form the inferior brachium

  • contains fibers which form the afferent pathway of the light reflex

Explanation

Question 30 of 46

5

The right visual cortex

Select one or more of the following:

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

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

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

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

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

Explanation

Question 31 of 46

5

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

Select one or more of the following:

  • the posterior root ganglion

  • lamellated (Pacinian) corpuscles

  • the parietal lobe of the cerebral hemisphere

  • the genu of the internal capsule

  • the medial lemniscus

Explanation

Question 32 of 46

5

The mastoid antrum

Select one or more of the following:

  • has the posterior semicircular canal on its medial side.

  • has its aditus on its lateral wall.

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

  • is related posteriorly to the cerebellum.

  • is posterolateral to the facial nerve.

Explanation

Question 33 of 46

5

Parasympathetic nerves in the thorax

Select one or more of the following:

  • cause contraction of the muscle in the lung

  • supply sensory fibres to the lung

  • are secretomotor to the oesophagus

  • cause the longitudinal muscle of the oesophagus to relax

  • supply sensory fibres to the pericardium.

Explanation

Question 34 of 46

5

Middle ear infection may follow a throat infection because:

Select one or more of the following:

  • 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.

Explanation

Question 35 of 46

1

Fill the blank space to complete the text.

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

Explanation

Question 36 of 46

1

Fill the blank space to complete the text.

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

Explanation

Question 37 of 46

1

Fill the blank space to complete the text.

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

Explanation

Question 38 of 46

1

Fill the blank space to complete the text.

The ciliary muscle is supplied by the

Explanation

Question 39 of 46

1

Fill the blank space to complete the text.

The outer covering of the eye is called the

Explanation

Question 40 of 46

1

Fill the blank space to complete the text.

Blind spot of the eye is known as

Explanation

Question 41 of 46

1

Fill the blank space to complete the text.

The stapes sends its vibrations to the

Explanation

Question 42 of 46

1

Fill the blank space to complete the text.

The membranous labyrinth contains fluid.

Explanation

Question 43 of 46

7

Select from the dropdown lists to complete the text.

Which of the following A to F supplies the structures 1 to 6?
A. sphenopalatine ganglion ( 5, none, 1, 2, 3, 4, 6 )
B. ciliary ganglion ( 1, none, 2, 3, 4, 5, 6 ),( 4, none, 1, 2, 3, 5, 6 )
C. optic ganglion ( 2, none, 1, 3, 4, 5, 6 )
D. superior cervical ganglion ( none, 1, 2, 3, 4, 5, 6 )
E. submandibular ganglion ( 3, none, 1, 2, 4, 5, 6 )
F. none of these ( 6, none, 1, 2, 3, 4, 5 )

1. ciliary muscle
2. parotid gland
3. sublingual gland
4. sphincter pupillae
5. lacrimal gland
6. Ievator palpebrae superioris muscle

Explanation

Question 44 of 46

13

Select from the dropdown lists to complete the text.

Which of the following A to E supplies the structures 1 to 13? (Note: ltems A through E may he used more than once.)
A. gustatory cells ( 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 ), ( 7, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13 )
B. macula lutea ( 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13 )
C. crista ampullaris ( 4, 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13 ), ( 9, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13 ), ( 13, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 )
D. macula ( 2, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 ), ( 3, 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 ). ( 5, 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13 ), ( 6, 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13 )
E. Spinal Organ (organ of corti) ( 8, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13 ), ( 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13 ), ( 11, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13 )

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 centralism
13. 8 group of hair cells located in the ampulla.

Explanation

Question 45 of 46

9

Select from the dropdown lists to complete the text.

Which of the following A to D supplies the structures 1 to 9? (Note: Items A through D may he used more than once.)
A. ganglion cells ( 1, 2, 3, 4, 5, 6, 7, 8, 9 ), ( 4, 1, 2, 3, 5, 6, 7, 8, 9 ), ( 7, 8, 9, 1, 2, 3, 4, 5, 6 )
B. bipolar cells ( 8, 9, 1, 2, 3, 4, 5, 6, 7 )
C. both A and B ( 1, 2, 3, 4, 5, 6, 7, 8, 9 ), ( 4, 1, 2, 3, 5, 6, 7, 8, 9 ), ( 7, 8, 9, 1, 2, 3, 4, 5, 6 ), ( 8, 9, 1, 2, 3, 4, 5, 6, 7 )
D. neither A nor B ( 2, 1, 3, 4, 5, 6, 7, 8, 9 ), ( 3, 1, 2, 4, 5, 6, 7, 8, 9 ), ( 5, 1, 2, 3, 4, 6, 7, 8, 9 ), ( 6, 1, 2, 3, 4, 5, 7, 8, 9 ), ( 9, 1, 2, 3, 4, 5, 6, 7, 8 )

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.

Explanation

Question 46 of 46

8

Select from the dropdown lists to complete the text.

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 ( 1, 2, 3, 4, 5, 6, 7, 8 ), ( 5, 1, 2, 3, 4, 6, 7, 8 ), ( 6, 1, 2, 3, 4, 5, 7, 8 ), ( 7, 1, 2, 3, 4, 5, 6, 8 )
B. endolymph ( 2, 1, 3, 4, 5, 6, 7, 8 ), ( 3, 1, 2, 4, 5, 6, 7, 8 ), ( 4, 1, 2, 3, 5, 6, 7, 8 ), ( 8, 1, 2, 3, 4, 5, 6, 7 )

1. scala vestibuli.
2. cochlear duct.
3. semicircular ducts.
4. utricle.
5. scala tympani.
6. vestibule.
7. semicircular canals.
8. saccule.

Explanation

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