MedIS exam 2013 - smh.aau.dk .Chiasma opticum, Tractus opticus, Nervus opticus, Radiatio optica,

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Text of MedIS exam 2013 - smh.aau.dk .Chiasma opticum, Tractus opticus, Nervus opticus, Radiatio optica,

1

MedIS exam 2013

Course title: Nervesystemet og bevgeapparatet II Medicine

Programme: Bachelor in education

Semester: 5. semester

Exam date: 21-1-12

Time: 9:00 - 13:00

Evaluation form 7-point scale External censur

Important information:

Remember to bring your student identification card

Remember to put your student number not your name and cpr no on all sheets that

you hand in for evaluation

Remember to hand in the assignment if you leave the exam before it has ended

No written aid is allowed

Quicktionary pen is allowed

Your paper must be handed in on paper in hand written form

The study board/the university cannot be held liable if any problems should occur regarding

the electronic aid during the examination

It will be considered cheating or attempting to cheat if the technical equipment of the student is

communicating or trying to communicate with other equipment not relevant to the exam, without

an explicit permission. Before the beginning of the exam, the student should make sure that all

communication devices in the equipment at the exam are turned off.

Use of Latin nomenclature

Communication is not allowed

The exam consists of a mixture of multiple choice questions and essay questions.

The total amount of questions is 60.

The total amount of points is 108.

This lists the grades corresponding to the points:

12 (passed): 101-108 points

10 (passed): 92-100.5 points

07 (passed): 83-91.5 points

04 (passed): 74-82.5 points

02 (passed): 65-73.5 points

00 (failed): 33-64.5 points

-2 (failed): 0-32.5 points

2

1. Eye muscle innervations

A. M. levator palpebrae superioris

B. M. obliquus superior

C. M. rectus lateralis

D. M. obliquus inferior

E. M. rectus medialis

Lead in: From the list above, select the appropriate option.

This muscle is innervated by the N. trochlearis (cranial nerve IV). B

This muscle is innervated by the N. abducens (cranial nerve VI). C

Max point: 2 Achieved point:

2. Eye muscle functions

A. M. levator palpebrae superioris

B. M. obliquus superior

C. M. rectus lateralis

D. M. obliquus inferior

E. M. rectus medialis

F. M. rectus inferior

G. M. rectus superior

Lead in: Select the appropriate muscle function from the list above.

Eye looks laterally (abduction) C

Eye rolls, looks down, laterally B

Eye looks medially (adduction) E

Eye rolls, looks up, laterally D

Max point: 4 Achieved point:

3.

What are the three branches of the cranial nerves V (N. trigeminus)? Give

them in ascending order (V1, V2, V3)

Where do these nerves pass through?

- N. ophthalmicus/V1 (0.5); Fissura orbitalis superior (0.5)

- N. maxillaris/V2 (0.5); Foramen rotundum (0.5)

- N. mandibularis/V3 (0.5); Foramen ovale (0.5)

Max point: 3 Achieved point:

4.

Which of the following cranial nerves has no primary sensory-motor function (mixed)?

A. N. vagus

B. N. vestibulocochlearis C. N. facialis

D. N. trigeminus

E. N. glossopharyngeus

Max point: 1 Achieved point:

3

5.

Which of the following cranial nerves does not pass through the foramen

jugulare?

A. N. vagus

B. N. glossopharyngeus

C. N. hypoglossus D. N. accessorius

Max point: 1 Achieved point:

6.

Which of the following statements is not true?

A. The vitreous humor fills the space between the lens and the retina.

B. The vitreous humor enters the Canal of Schlemm that delivers the

humor to veins in the sclera.

C. The aqueous humor fills the space in front of the lens.

D. The aqueous humor is actively secreted by epithelial cells.

E. The intraocular pressure is considered normal in the range of 12 to 21

mm/Hg.

Max point: 1 Achieved point:

7

Visual information processing from the retina to the visual cortex

involves different structures. Arrange the following terms in the correct order:

Chiasma opticum, Tractus opticus, Nervus opticus, Radiatio optica,

Corpus geniculatum laterale.

Nervus opticus, Chiasma opticium, Tractus opticus, Corpus geniculatum laterale,

Radiatio optica

Max point: 2 Achieved point:

8. A left tractus opticus lesion induces which one of the following clinical

signs?

A. Medial deviation of the eyeball

B. Ptosis

C. Anosmia

D. Hemianopia E. Miosis

Max point: 1 Achieved point:

9 Which one of the following statements concerning the corneal reflex is

true?

A. The afferent nerve fibers belong to the N. occulomotorius.

B. It is a monosynaptic reflex.

C. The reflex fails in a complete peripheral palsy of the N. facialis. D. The efferent nerve fibers originate in the Mesencephalon.

E. A positive reflex is a pathological sign.

Max point: 1 Achieved point:

4

10

The pupillary light reflex mainly involves two inner eye muscles.

Give the exact latin names of these muscles and their functions.

Musculus sphincter pupillae - Miosis (1)

Musculus dilatator pupillae - Mydriasis (1)

Max point: 2 Achieved point:

11

Which one of the following statements concerning the Nervus

vestibulocochlearis is NOT true?

A. Lesions of the semicircular canals induce sensorineural deafness. B. Sensory receptors are located in the cochlea.

C. It passes through the Meatus acusticus internus.

D. Nuclei are located in the Medulla oblongata.

E. Sensory receptors are located in the semicircular canals.

Max point :1 Achieved point:

12

Which one of the following statements concerning the

Sound Pressure Level (SPL) is true?

A. The physical unit of SPL is phon.

B. A tenfold increase of the sound pressure corresponds to an increase of

SPL by 20 dB SPL.

C. The reference pressure is 0.02 Pa.

D. The auditory pain threshold is approx. 80 dB SPL.

E. The SPL of a jackhammer is 40 dB SPL.

Max point: 1 Achieved point:

13

Clinical testing of hearing impairment includes the Weber and Rinne test.

A - Describe the performance of the Weber test.

B - Give the results of the test in a patient with a conductive hearing loss

on the right side (Weber).

C briefly define the meaning of a positive and negative Rinne test

A. In the Weber test a tuning fork (either 256 or 512 Hz) is struck and the stem of the fork is placed on the top of the patient's skull - equal distance from the

patient's ears, in the middle of the forehead - equal distance from the patient's

ears or above the upper lip over the teeth. The patient is asked to report in

which ear the sound is heard louder. (2)

B. Weber: Lateralization of sound in the affected right ear. (1)

C. Conductive hearing loss: ACBC/positive Rinne test

AC: air conduction, BC: bone conduction

Max point: 4 Achieved point:

5

14 Anatomy of the ear

Lead in: Identify the appropriate name to accompany each label

Label:

A Membrana tympani

B Stapes

C Cochlea

D Tuba auditiva (Eustachii)

Max point: 4 Achieved point:

15.

When it comes to the transmission of sound waves from the inner ear,

what are the sound amplification mechanisms that involves the 3 ossicles?

The 3 ossicle are a series of levers:

Movement of the malleolus causes a greater movement of the incus which in turn

causes an even greater movement of the stapes.

Max point: 1 Achieved point:

16

Which one of the following statements is true regarding clinical signs of

N. facialis impairment?

A. Paresis of Mm. masticatorii

B. Bells sign C. Vertigo

D. Diplopia

E. Anosmia

Max point: 1 Achieved point:

6

17

Which one of the following statements is NOT a typical clinical test of

N. vagus impairment?

A. Intraoral, pharyngeal sensations

B. Uvula position

C. Speak & cough

D. Protrude & retract tongue E. Gag reflex

Max point: 1 Achieved point:

18

Which one of the following statements concerning accommodation is

true?

A. Contraction of the Musculus ciliaris decreases the refractory power of

the lens.

B. Total loss of accommodation is called Myopia.

C. Accommodation is clinically tested by the Snellen Chart.

D. Emmetropia corresponds to loss of sympathetic innervation.

E. Parasympathetic input to inner eye muscles mediates near

accommodation.

Max point: 1 Achieved point:

19

Which one of the following vessels does NOT belong to the

Circulus arteriosus cerebri?

A. Arteria subclavia B. Arteria cerebri anterior

C. Arteria cerebri media

D. Arteria cerebri posterior

E. Arteria basilaris

Max point: 1 Achieved point: