Sample Test Items Part I (Basic Science)
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1 Sample Test Items Part I (Basic Science) 1. A 31-year-old female is deaf in her right ear and is unable to close her right eye, but has no loss of touch sensation on the right side of her face. The MOST likely site of a single lesion that would account for her symptoms is the: a. superior orbital fissure b. cavernous sinus *c. internal auditory meatus d. stylomastoid foramen e. crus cerebri Section: A Primary Sub-content Area: 1 Skill: 2 2. Which of the following cell types is capable of becoming a plasma cell? a. Monocyte *b. Lymphocyte c. Eosinophil d. Neutrophil Section: A Primary Sub-content Area: 2 Skill: 1 3. The muscles of mastication are innervated by motor neurons whose cell bodies are located in the: a. dorsal motor nucleus of the vagus nerve b. motor nucleus of the facial nerve *c. motor nucleus of the trigeminal nerve d. salivatory nucleus Section: A Primary Sub-content Area: 3 Skill: 1 4. In the absence of oxygen, which metabolic event or cycle generates the NAD + utilized during the metabolism of glucose? a. Pentose phosphate pathway (Pentose shunt) b. Tricarboxylic acid cycle (Krebs cycle) c. Oxidative phosphorylation *d. Lactic acid production Section: A Primary Sub-content Area: 4 Skill: 1 5. Which of the following changes in plasma ion concentration is the major stimulus for parathyroid hormone secretion? a. An increase in calcium *b. A decrease in calcium c. An increase in sodium d. A decrease in potassium Section: A Primary Sub-content Area: 5 Skill: 1
2 6. Which of the following tests would BEST differentiate staphylococci from streptococci? *a. Catalase b. Oxidase c. Gram stain d. Giemsa stain Section: A Primary Sub-content Area: 6 Skill: 1 7. Which type of antibody is involved in atopic disease? a. IgA *b. IgE c. IgG d. IgM Section: A Primary Sub-content Area: 7 Skill: 1 8. Which of the following drugs acts by selective stimulation of β 2 -adrenergic receptors? a. Theophylline b. Isoproterenol c. Norepinephrine *d. Albuterol Section: A Primary Subcontent Area: 8 Skill: 1 9. Tumors originating in which of the following organs typically do NOT metastasize? a. Lung b. Breast c. Colon *d. Brain Section: A Primary Subcontent Area: 9 Skill: The sensation of corneal pain is PRIMARILY transmitted through which of the following nerves? a. Infraorbital b. Lacrimal *c. Nasociliary d. Oculomotor Section: B Primary Sub-content Area: 1 Skill: 1 2
3 11. Which of the following structures of the adult eye is embryologically derived from the tertiary vitreous? a. Lens capsule b. Internal limiting membrane *c. Zonular fibers d. Vitreous body Section: B Primary Sub-content Area: 2 Skill: A head tilt toward the left shoulder is MOST likely due to a paresis of the right: a. inferior oblique *b. superior oblique c. inferior rectus d. superior rectus Section: B Primary Sub-content Area: 3 Skill: Occlusion of the short posterior ciliary arterioles will MOST likely cause necrosis of which of the following retinal layers? a. Inner nuclear b. Ganglion cell c. Nerve fiber *d. Outer nuclear Section: B Primary Sub-content Area: 3 Skill: Which of the following preservatives is MOST likely to disrupt the corneal epithelium? *a. Benzalkonium chloride b. Chlorobutanol c. Sorbic acid d. Chlorhexidine Section: B Primary Sub-content Area: 4 Skill: A D lens has a real object located 20 cm from the lens. The conjugate image is: *a. real and located 50 cm from the lens b. virtual and located 50 cm from the lens c. real and located 8.30 cm from the lens d. virtual and located 8.30 cm from the lens e. real and located cm from the lens Section: C Primary Sub-content Area: 1 Skill: 2 3
4 16. A lens is made of glass with a refractive index of What would be the refractive index for the ideal anti-reflection coating? *a b c d e Section: C Primary Sub-content Area: 2 Skill: A 22-mm round bifocal lens has a power of DS, Add D. What is the "jump" with this bifocal in prism diopters? a b *c d e Section: C Primary Sub-content Area: 3 Skill: An Executive bifocal has a base curve of D and a segment surface of D. The ocular surface measures D when a lens gauge is placed on it vertically, and D when placed horizontally. The Rx is: a DS DC x 090, Add D b DS DC x 090, Add D *c DS DC x 180, Add D d DS DC x 180, Add D e DS DC x 180, Add D Section: C Primary Sub-content Area: 3 Skill: An eye under the influence of an extremely strong miotic agent has a pupil diameter of 1 mm. The resolution of this eye is considered to be limited by: a. radial astigmatism b. coma *c. diffraction d. spherical aberration e. depth of focus Section: C Primary Sub-content Area: 4 Skill: 1 4
5 20. The size of the first Purkinje image is NOT dependent on the: a. radius of curvature of the anterior corneal surface *b. refractive index of the cornea c. size of the object d. distance of the object from the cornea Section: C Primary Sub-content Area: 4 Skill: The portion of the spectrum called blue-green by normals is MOST readily confused with the white portion for which of the following types of observers? a. Trichromats *b. Deuteranopes c. Tritanopes Section: C Primary Sub-content Area: 5 Skill: What is the final position of the eye after being abducted 10 degrees and elevated 20 degrees from the straight-ahead position? a. Primary b. Secondary *c. Tertiary Section: C Primary Sub-content Area: 6 Skill: In a block of 100 trials of a yes/no signal detection experiment, the signal is absent on 10 trials. The observer has 80 hits and 5 false alarms (false positives). How many responses are correct rejections? a. 0 *b. 5 c. 10 d. 15 Section: D Primary Sub-content Area: 1 Skill: When measured with Teller acuity cards, the grating acuity of a 10-month-old infant is expected to be approximately: *a. 10 cycles per degree b. 30 cycles per degree c. 50 cycles per degree d. 70 cycles per degree Section: D Primary Sub-content Area: 2 Skill: 1 5
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