The following are true: a. depth of perception only occurs in patients with normal visual acuities in both eye b. Hering's law states that increased innervation to an extraocular muscle is accompanied by a decrease in innervation to its antagonists. c. objects on the Panum's area fall on simultaneous areas of the retina d. objects outside of the Panum's area are perceived as doubl

The following are true:
a. depth of perception only occurs in patients with normal visual acuities in both eye
b. Hering's law states that increased innervation to an extraocular muscle is accompanied by a decrease
in innervation to its antagonists.
c. objects on the Panum's area fall on simultaneous areas of the retina
d. objects outside of the Panum's area are perceived as doubl
by

1 Answer

Answer :

objects outside of the Panum's area are perceived as doubl
by

Related questions

The following are true: a. Kirschman's law: the greatest contrast in colour is seen when the luminosity differnece is small b. Emmbert's law: the perceived size of an object varies in proportion to the distance of the surface on which it is projected c. Hering's law: the contraction of a muscle is accompanied by simultaneous and proportional relaxation of the antagonist d. Troxler's phenomenon: an image in the periphery of the retina tends to fade or disappear during steady fixation of another objec

Description : The following are true: a. Kirschman's law: the greatest contrast in colour is seen when the luminosity differnece is small b. Emmbert's law: the perceived size of an object varies in ... image in the periphery of the retina tends to fade or disappear during steady fixation of another objec

Last Answer : Troxler's phenomenon: an image in the periphery of the retina tends to fade or disappear during steady fixation of another objec

In binocular vision: a. only points on the horopter fall on the corresponding retinal point b. points in front of the horopter will stimulate binasal retina c. points outside the horopter is perceived doubly d. the Panum's fusional area is wider in the centre than the periphery e. sensory fusion refers to the cortical integration of images perceived by the two eyes

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Last Answer : only points on the horopter fall on the corresponding retinal point

The following are true: a. a horopter is a straight line on which an object will stimulate corresponding retinal points b. objects further or nearer than the horopter to the eyes are always perceived as double c. objects in the Panum's area are perceived singly d. objects outside the Panum's are are perceived as double

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Last Answer : objects outside the Panum's are are perceived as double

The following are true about ocular circulation: a. only 4% of the total blood supply to the eye goes to the retina b. the choroidal blood flow in normal people is ten times that of the grey mater of the brain c. autoregulation occurs in both retinal and choroidal circulation d. a PaCO2 rise of 1 mm Hg induces a 3% rise in retinal blood flow

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All the following are extraocular muscle of eye except: a. Superior rectus b. Ciliary muscle c. Inferior oblique d. Superior oblique

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Which of the following terms refers to the decrease in lens flexibility that occurs with age, resulting in the near point of focus getting farther away? a) Presbyopia Presbyopia usually begins in the fifth decade of life, when reading glasses are required to magnify objects. b) Presbycusis Presbycusis refers to age-related hearing loss. c) Cataract Cataract is the development of opacity of the lens of the eye. d) Glaucoma Glaucoma is a disease characterized by increased intraocular pressure.

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The following are true about critical fusion frequency: a. it refers to the rate at which stimuli can be presented and still be perceived as separate stimuli b. it is dependent on visual acuity c. it is dependent on the spacing between neighbouring photoreceptors d. it depends on the time-resolving ability of the eye

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The only extraocular muscle which does not arise from the apex of the orbit is: a. Superior rectus b. Superior oblique c. Inferior oblique d. Inferior rectus

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The following are true about micro-circulation: a. arterioles have no muscle b. capillaries have walls made up of a single layer of cells c. capillaries have no innervation d. the capillaries contain 5% of the total blood volume at any one time

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The following are true about the Troxler's phenomenon: a. it refers to disappearance of an image during steady fixation of another object b. it only occurs in the peripheral retina c. eye movement eliminates this phenomenon d. movement of the object eliminates this phenomenon

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Which of the following statements describes benign paroxysmal positional vertigo (BPPV)? a) The vertigo is usually accompanied by nausea and vomiting; however hearing impairment does not generally occur. BPPV is a brief period of incapacitating vertigo that occurs when the position of the patient’s head is changed with respect to gravity. The vertigo is usually accompanied by nausea and vomiting; however hearing impairment does not generally occur.

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Extraocular muscle function testing?

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If there is simultaneous fall in consumers disposal income as well number of suppliers of a product in the market, the (a) Equilibrium quantity will decrease ; (b) Equilibrium price will decrease ; (c) Equilibrium price will go up ; (d) Equilibrium quantity will increase

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Absorption accompanied by heat evolution results in (A) Increased capacity of the absorber (B) Increase in equilibrium solubility (C) Decrease in equilibrium solubility (D) None of these

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The Pulfrich phenomenon: a. occurs in patients with bilateral macular degeneration b. occurs in optic neuritis c. refers to the perception of photopsia d. refers to the illusion of abnormal motion

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Which of the following statements about delivery-dependent oxygen consumption are true? A. Below the critical oxygen delivery (D(overdot)O 2crit), one would expect to see a decrease in the lactate-pyruvate ratio. B. D(overdot)O 2crit may be increased in patients with sepsis. C. A desirable goal in the treatment of shock is to achieve delivery-independent oxygen consumption. D. The oxygen extraction ratio remains constant as long as oxygen delivery remains above D(overdot)O 2crit.

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If you doubl the mass of an object while leaving the net force unchanged what is the result on the acceleration?

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Auxin antagonists compounds interact with auxins as: a. Counteract b. Increase c. Decrease d. None of the above

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When the nurse notes that the post cardiac surgery patient demonstrates low urine output (< 25 ml/hr) with high specific gravity (> 1.025), the nurse suspects: a) Inadequate fluid volume Urine output of less than 25 ml/hr may indicate a decrease in cardiac output. A high specific gravity indicates increased concentration of solutes in the urine which occurs with inadequate fluid volume. b) Normal glomerular filtration Indices of normal glomerular filtration are output of 25 ml or greater per hour and specific gravity between 1.010 and 1.025. c) Overhydration Overhydration is manifested by high urine output with low specific gravity. d) Anuria The anuric patient does not produce urine.

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Last Answer : a) Inadequate fluid volume Urine output of less than 25 ml/hr may indicate a decrease in cardiac output. A high specific gravity indicates increased concentration of solutes in the urine which occurs with inadequate fluid volume.

Fall in blood pressure caused by larger doses of histamine is blocked by (a) H1 antihistaminics alone (b) H2 ANTAgonists alone (c) Combination of H1 and H2 antagonists (d) None of the above

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In the intact animal H2 receptor antagonists potentiate the following action of histamine: A. Cardiac stimulation B. Fall in blood pressure C. Uterine relaxation D. Bronchospasm

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Fall in blood pressure caused by larger doses of histamine is blocked by: A. H1 antihistaminics alone B. H2 antagonists alone C. Combination of H1 and H2 antagonists D. None of the above

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A far-sighted person, without optical correction, is typically able to see nearby objects more clearly in bright light. The reason for this phenomena is: w) bright light provides better illumination. x) the pupil of the eye narrows which increases the depth of focus. y) the pupil of the eye widens which increases the depth of focus. z) the bright light causes squinting which flattens the eyeball which tends to correct the far-sighted condition.

Description : A far-sighted person, without optical correction, is typically able to see nearby objects more clearly in bright light. The reason for this phenomena is: w) bright light provides better ... bright light causes squinting which flattens the eyeball which tends to correct the far-sighted condition.

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Hahnemann conceived idea of Cinchona bark experiment during the translation of Options: 1) Monroe’s “Materia Medica” 2) Cullen’s “Treatise on Materia Medica” 3) Lewin’s “Secondary Effects of Remedies” 4) Herings “Guiding Symptoms of Materia Medica"

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Last Answer : Correct Answer: 2) Cullen’s “Treatise on Materia Medica”

What type of sensory information travels from the retina through the thalamus to the visual cortex?

Description : What type of sensory information travels from the retina through the thalamus to the visual cortex?

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In a patient with dense cataract and poor retina view, the following tests can be used to test the macular function: a. relative afferent pupillary defect b. laser interferometry c. Haidinger brushes d. Visual evoked potential

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The cells of the retinal pigment epithelium: a. are of mesenchymal origin b. are shorter at the fovea than else where in the retina c. have intracellular melanosomes d. regenerate visual pigment e. form the inner outer blood-retina barrier

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Which one of the following is the correct difference between rod cells and cone cells of our retina? Rod cells Cone cells (a) Overall Vision in poor Colour vision function light and detailed vision in bright light (b) Distribution More Evenly concentrated in distributed centre of retina all over retina (c) Visual acuity High Low (d) Visual pigment Iodopsin Rhodopsin contained

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Last Answer : (a) Overall Vision in poor Colour vision function

Which of the following statements regarding cytokines is incorrect? A. Cytokines act directly on target cells and may potentiate the actions of one another. B. Interleukin 1 (IL-1) is a major proinflammatory mediator with multiple effects, including regulation of skeletal muscle proteolysis in patients with sepsis or significant injury. C. Platelet-activating factor (PAF) is a major cytokine that results in platelet aggregation, bronchoconstriction, and increased vascular permeability. D. Tumor necrosis factor alpha (TNF-a), despite its short plasma half-life, appears to be a principal mediator in the evolution of sepsis and the multiple organ dysfunction syndrome because of its multiple actions and the secondary cascades that it stimulates.

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Which of the following terms related to aphasia refers to the failure to recognize familiar objects perceived by the senses? a) Agnosia Auditory agnosia is failure to recognize significance of sounds.

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The isozyme CK-MB is specifically increased in the blood of patients who had (A) Skeletal muscle disease (B) Recent myocardial infarction (C) Infective hepatitis (D) Myxoedema

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The following are true about the lens: a. 90% of the weight of the lens is contributed by waterb. it has no sensory innervation c. the capsule is thicker posterior than anteriorly d. it has an equatorial diameter of about 15 mm

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Last Answer : it has no sensory innervation

Which type of sleep apnea is characterized by lack of airflow due to pharyngeal occlusion? a) Obstructive Obstructive sleep apnea occurs usually in men, especially those who are older and overweight. b) Simple Types of sleep apnea do not include a simple characterization. c) Mixed Mixed sleep apnea is a combination of central and obstructive apnea with one apneic episode. d) Central In central sleep apnea, the patient demonstrates simultaneous cessation of both airflow and respiratory movements.

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Last Answer : a) Obstructive Obstructive sleep apnea occurs usually in men, especially those who are older and overweight.

If our physical appearance never changed past a certain age, yet we continued to age normally, how would this visual perception effect the world? or you?

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Last Answer : People would be surprised when you dropped dead of old age or behaved in a senile fashion. Besides, with enough plastic surgery your fantasy is real today.

The equilibrium price of a commodity will definitely rise if there is a/an: (1) increase in supply combined with a decrease in demand. (2) increase in both demand and supply. (3) decrease in both demand and supply. (4) increase in demand accompanied by a decrease in supply.

Description : The equilibrium price of a commodity will definitely rise if there is a/an: (1) increase in supply combined with a decrease in demand. (2) increase in both demand and supply. (3) decrease in both demand and supply. (4) increase in demand accompanied by a decrease in supply.

Last Answer : (4) increase in demand accompanied by a decrease in supply. Explanation: Price of a commodity is always determined by the forces of demand and supply in the market. The price at which ... equilibrium price definitely increases when there is an increase in demand combined with the decrease in supply.

The equilibrium price of a commodity will definitely rise if there is a/an : (1) increase in supply combined with a decrease in demand. (2) increase in both demand and supply. (3) decrease in both demand and supply. (4) increase in demand accompanied by a decrease in supply.

Description : The equilibrium price of a commodity will definitely rise if there is a/an : (1) increase in supply combined with a decrease in demand. (2) increase in both demand and supply. (3) decrease in both demand and supply. (4) increase in demand accompanied by a decrease in supply.

Last Answer : increase in demand accompanied by a decrease in supply.

The following are true about spectral sensitivity of the retina: a. in scotopic conditions, the peak sensitivity of the eye is near 500 nm b. under photopic conditions the peak sensitivity is near 555 nm c. in the presence of a bright yellow steady background light the retina has a peak sensitivity near 440 nm to a 25-Hz stimulus d. all above

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Last Answer : all above

In the neurone: a. the magnitude of the action potential is dependent on the strength of the stimulus b. impulses can travel in both direction c. depolarization is accompanied by increased permeability of the cell membrane to potassium ions d. during depolarization, the potential of the neurone changes from -70mV to +40mV

Description : In the neurone: a. the magnitude of the action potential is dependent on the strength of the stimulus b. impulses can travel in both direction c. depolarization is accompanied by increased ... potassium ions d. during depolarization, the potential of the neurone changes from -70mV to +40mV

Last Answer : during depolarization, the potential of the neurone changes from -70mV to +40mV

Retro-bulbar optic neuritis is characterized by: a. Marked swelling of the optic disc. b. Impaired direct light reflex in the affected eye c. Impaired consensual light reflex in the affected eye d. Normal visual acuity

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Last Answer : ANSWER: B