What is Pupil ?

What is Pupil ?
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1 Answer

Answer :

There is a hole in the middle of the Irish called the pupil.
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Related questions

is pupil a long or short vowel?

Description : is pupil a long or short vowel?

Last Answer : There are two vowels in pupil. The first one, 'u' is long, whilethe second one, 'i' is short.

What is the difference between pupil and student ?

Last Answer : : Pupil is usually used for students under the direct supervision of a teacher or for lower class students and for students in school (secondary) , college and university .

Regulating muscle, which controls the pupil is a part of

Description : Regulating muscle, which controls the pupil is a part of

Last Answer : Regulating muscle, which controls the pupil is a part of

Regulating muscle, which controls the pupil is a part of

Description : Regulating muscle, which controls the pupil is a part of

Last Answer : Regulating muscle, which controls the pupil is a part of

What refers to contraction of the pupil?

Description : What refers to contraction of the pupil?

Last Answer : The pupil constricts when it becomes smaller.

Who is the Greek philosopher pupil of Socrates?

Description : Who is the Greek philosopher pupil of Socrates?

Last Answer : Plato

What does the pupil do in the eye?

Description : What does the pupil do in the eye?

Last Answer : The pupil is an opening into the center of the eyeball, where the retina (visual receptor layer) is located.The pupil is located in the front center of the eyeball, and its size (aperture) is ... behind the cornea, or lens, that focuses light on the interior surface of the eye (the retina).

A) Size of pupil becomes __________________when you see in dim light?

Description : A) Size of pupil becomes __________________when you see in dim light?

Last Answer : size of pupil becomes larger when you see in dim light

Which ONE of the following would be expected in a third nerve palsy? A. Enophthalmos B. Constricted pupil C. Convergent strabismus D. Increased lacrimation E. Unreactive pupil to light

Description : Which ONE of the following would be expected in a third nerve palsy? A. Enophthalmos B. Constricted pupil C. Convergent strabismus D. Increased lacrimation E. Unreactive pupil to light

Last Answer : Ans: E

When a person enters a dark room from bright light he is not able to see clearly for little while because ______ A. Eye is unable to adjust itself immediately B. Retina becomes insensitive momentarily C. Iris is unable to dilate the pupil immediately D. Distance between the lens and retina take time to adjust

Description : When a person enters a dark room from bright light he is not able to see clearly for little while because ______ A. Eye is unable to adjust itself immediately B. Retina becomes insensitive ... is unable to dilate the pupil immediately D. Distance between the lens and retina take time to adjust

Last Answer : ANSWER: C

When a person enters a dark room from bright light, he is not able to see clearly for a little while because the (a) eye is unable to adjust itself immediately (b) retina becomes insensitive momentarily (c) iris is unable to dilate the pupil immediately (d) distance between the lens and retina takes time to adjust

Description : When a person enters a dark room from bright light, he is not able to see clearly for a little while because the (a) eye is unable to adjust itself immediately (b) retina becomes insensitive ... is unable to dilate the pupil immediately (d) distance between the lens and retina takes time to adjust

Last Answer : Ans:(c)

When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because (a) The eye muscles cannot immediately change the focal length of the eye lens (b) The retina retains the bright images for some time and becomes momentarily insensitive (c) The iris is unable to contract the pupil immediately (d) The iris is unable to dilate the pupil immediately

Description : When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because (a) The eye muscles cannot immediately change the focal length of the eye ... iris is unable to contract the pupil immediately (d) The iris is unable to dilate the pupil immediately

Last Answer : Ans:(d)

A person will have brown eyes, blue eyes or black eyes depending on the particular pigment present in the : (1) Pupil (2) Cornea (3) Iris (4) Choroid

Description : A person will have brown eyes, blue eyes or black eyes depending on the particular pigment present in the : (1) Pupil (2) Cornea (3) Iris (4) Choroid

Last Answer : (3) Iris Explanation: Eye color is a polygenic phenotypic character determined by 2 distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the turbid ... iris stroma (located at the front of the iris), and the cellular density of the stroma.

When a person enters a dark room from bright light he is not able to see clearly for a little while because the? A. Eye is unable to adjust itself immediately B. Retina becomes insensitive momentarily C. Iris is unable to dilate the pupil immediately (Answer) D. Distance between the lens and retina take time to adjust

Description : When a person enters a dark room from bright light he is not able to see clearly for a little while because the? A. Eye is unable to adjust itself immediately B. Retina becomes insensitive ... to dilate the pupil immediately (Answer) D. Distance between the lens and retina take time to adjust

Last Answer : C. Iris is unable to dilate the pupil immediately (Answer)

With regard to efferent pupillary defect: a. the pupil reacts poorly to light and accommodation b. anisocoria is a feature c. the affected eye has poor distant vision d. a lesion in the sympathetic pathway is a recognized cause

Description : With regard to efferent pupillary defect: a. the pupil reacts poorly to light and accommodation b. anisocoria is a feature c. the affected eye has poor distant vision d. a lesion in the sympathetic pathway is a recognized cause

Last Answer : a lesion in the sympathetic pathway is a recognized cause

The following are true about pupil reaction to light: a. secretion of acetylcholine is responsible for pupil dilatation b. constriction of the pupil is mediated by nerve fibres travelling in the short ciliary nerve c. dilatation of the pupil is mediated by nerve fibres travelling in the long ciliary nerve d. the sympathetic nerve innervates the dilator muscles

Description : The following are true about pupil reaction to light: a. secretion of acetylcholine is responsible for pupil dilatation b. constriction of the pupil is mediated by nerve fibres travelling in ... fibres travelling in the long ciliary nerve d. the sympathetic nerve innervates the dilator muscles

Last Answer : the sympathetic nerve innervates the dilator muscles

In myasthenia gravis: a. the vertical muscles of the eye are more commonly involved than the horizontal muscles b. the pupil reaction to light is sluggish c. absent antibody to acetylcholine receptors exclude the diagnosis d. Cogan's twitch refers to involuntary twitching of the orbicularis

Description : In myasthenia gravis: a. the vertical muscles of the eye are more commonly involved than the horizontal muscles b. the pupil reaction to light is sluggish c. absent antibody to acetylcholine receptors exclude the diagnosis d. Cogan's twitch refers to involuntary twitching of the orbicularis

Last Answer : the vertical muscles of the eye are more commonly involved than the horizontal muscles

Pupil dilatation occurs with: a. neostigmine b. cocaine c. atenolol d. codeine

Description : Pupil dilatation occurs with: a. neostigmine b. cocaine c. atenolol d. codeine

Last Answer : cocaine

Stimulation of the beta receptors give rise to: a. tachycardia b. increased myocardial contraction c. vasoconstriction of visceral vessels d. pupil dilatation

Description : Stimulation of the beta receptors give rise to: a. tachycardia b. increased myocardial contraction c. vasoconstriction of visceral vessels d. pupil dilatation

Last Answer : increased myocardial contraction

True statements about the pupil include: a. it is controlled mainly by the autonomic system b. miosis increases the depth of focus for near vision c. a change in the pupil diameter from 2 to 8 mm increases the amount of light entering the eye by 16- fold d. all above

Description : True statements about the pupil include: a. it is controlled mainly by the autonomic system b. miosis increases the depth of focus for near vision c. a change in the pupil diameter from 2 to 8 mm increases the amount of light entering the eye by 16- fold d. all above

Last Answer : all above

The following are true about pupillary reaction to light: a. it is impaired in damage of the Edinger-Westphal nucleus b. it is impaired in damage of the ciliary ganglion c. it is impaired in damage of the superior cervical ganglion d. the pupil does not respond to light with a frequency of greater than 5 H

Description : The following are true about pupillary reaction to light: a. it is impaired in damage of the Edinger-Westphal nucleus b. it is impaired in damage of the ciliary ganglion c. it is impaired in ... cervical ganglion d. the pupil does not respond to light with a frequency of greater than 5 H

Last Answer : the pupil does not respond to light with a frequency of greater than 5 H

The visual acuity is affected by: a. pupil size b. illumination of the target c. red-green colour blindness d. contrast

Description : The visual acuity is affected by: a. pupil size b. illumination of the target c. red-green colour blindness d. contrast

Last Answer : contrast

The following are true about dark adaptation: a. only regeneration of rhodopsin is responsibleb. adaptation usually takes about 20 minutes c. dilatation of pupil plays a part in dark adaptation d. it is better with the fovea than the peripheral retina

Description : The following are true about dark adaptation: a. only regeneration of rhodopsin is responsible b. adaptation usually takes about 20 minutes c. dilatation of pupil plays a part in dark adaptation d. it is better with the fovea than the peripheral retina

Last Answer : dilatation of pupil plays a part in dark adaptation

When light fell on the eye, the pupil: a. does not constrict if the optic nerve is severed b. does not respond if the sympathetic system is not functioning c. does not respond if the cholinergic system is blocked d. does not respond if the pretectal nucleus is damaged

Description : When light fell on the eye, the pupil: a. does not constrict if the optic nerve is severed b. does not respond if the sympathetic system is not functioning c. does not respond if the cholinergic system is blocked d. does not respond if the pretectal nucleus is damaged

Last Answer : does not respond if the pretectal nucleus is damaged

The following reflexes are used to test for brain stem death: a. knee jerk reflex b. Babinski's reflex c. gag reflex d. pupil reflex

Description : The following reflexes are used to test for brain stem death: a. knee jerk reflex b. Babinski's reflex c. gag reflex d. pupil reflex

Last Answer : gag reflex

The following are true about the pupils: a. pupil size is largest in adolescence b. physiological anisocoria is found in 20% of the population c. the latent period of the pupil reaction to light ranges from 0.2 to 0.5s d. all above

Description : The following are true about the pupils: a. pupil size is largest in adolescence b. physiological anisocoria is found in 20% of the population c. the latent period of the pupil reaction to light ranges from 0.2 to 0.5s d. all above

Last Answer : all above

The following conditions can affect the pupil size: a. iris colour b. fatigue c. exercise d. all above

Description : The following conditions can affect the pupil size: a. iris colour b. fatigue c. exercise d. all above

Last Answer : all above

Ablation of the stellate ganglion cuases: a. dilatation of the ipsilateral pupil b. vasodilatation of the ipsilateral arm c. posteral hypotension d. loss of consensual light reflex

Description : Ablation of the stellate ganglion cuases: a. dilatation of the ipsilateral pupil b. vasodilatation of the ipsilateral arm c. posteral hypotension d. loss of consensual light reflex

Last Answer : vasodilatation of the ipsilateral arm

The following reflexes are used to test for brain stem death: a. knee jerk reflex b. Babinski's reflex c. gag reflex d. pupil reflex

Description : The following reflexes are used to test for brain stem death: a. knee jerk reflex b. Babinski's reflex c. gag reflex d. pupil reflex

Last Answer : gag reflex

Direct light reflex of the pupil is absent in: a. lesion of the ipsilateral ciliary ganglion. b. transaction of the ipsilateral optic nerve. c. bilateral occipital lobe lesion. d. topical application of phenylepherine.

Description : Direct light reflex of the pupil is absent in: a. lesion of the ipsilateral ciliary ganglion. b. transaction of the ipsilateral optic nerve. c. bilateral occipital lobe lesion. d. topical application of phenylepherine.

Last Answer : lesion of the ipsilateral ciliary ganglion.

The following are true about entopic phenomenon: a. it can be produced by cells in the vitreous b. it can be produced by palpation of the eyeballs c. the size of one's pupil can be observed with a pinhole d. asteroid hyalosis causes significant visual disturbance due to entopic phenomenon e. Haidinger's brushes are produced by the inner plexiform layers

Description : The following are true about entopic phenomenon: a. it can be produced by cells in the vitreous b. it can be produced by palpation of the eyeballs c. the size of one's ... significant visual disturbance due to entopic phenomenon e. Haidinger's brushes are produced by the inner plexiform layers

Last Answer : the size of one's pupil can be observed with a pinhole

Photoreceptors (Rods and cones) of eye are present in (a) Sclera (b) Cornea (c) Retina (d) Pupil

Description : Photoreceptors (Rods and cones) of eye are present in (a) Sclera (b) Cornea (c) Retina (d) Pupil

Last Answer : (c) Retina

Function of iris is to (a) move lens forward and backward (b) refract light rays (c) bring about movements of eye lids (d) alter the size of pupil.

Description : Function of iris is to (a) move lens forward and backward (b) refract light rays (c) bring about movements of eye lids (d) alter the size of pupil.

Last Answer : (d) alter the size of pupil.

Light rays entering the eye is controlled by (a) pupil (b) iris (c) cornea (d) lens.

Description : Light rays entering the eye is controlled by (a) pupil (b) iris (c) cornea (d) lens.

Last Answer : (a) pupil

One function of parasympathetic nervous system is (a) contraction of hair muscles (b) stimulation of sweat glands (c) acceleration of heart beat (d) constriction of pupil.

Description : One function of parasympathetic nervous system is (a) contraction of hair muscles (b) stimulation of sweat glands (c) acceleration of heart beat (d) constriction of pupil.

Last Answer : (d) constriction of pupil.

Resolving power of a telescope depends on (A) The diameter of the aperture (B) The pupil aperture of the eye (C) The diameter of the object glass (D) All the above

Description : Resolving power of a telescope depends on (A) The diameter of the aperture (B) The pupil aperture of the eye (C) The diameter of the object glass (D) All the above

Last Answer : (D) All the above

The colored part of the human eye that controls how much light passes through the pupil is called the?

Description : The colored part of the human eye that controls how much light passes through the pupil is called the?

Last Answer : Iris

If a teacher is not able to answer the question of a pupil he should (a) Say that he will answer after consultation (b) Rebuke the pupil (c) Say that the questions wrong (d) Feel shy of his ignorance

Description : If a teacher is not able to answer the question of a pupil he should (a) Say that he will answer after consultation (b) Rebuke the pupil (c) Say that the questions wrong (d) Feel shy of his ignorance

Last Answer : (a) Say that he will answer after consultation

Below are given some probable characteristics of an in-effective teacher, which of them is most likely to be characterized the ineffective teacher (a) Emphasis upon pupil discussion in the clarification of groups’ goals. (b) Emphasis upon standards (c) Emphasis upon the control of the immediate situation (d) None of the above

Description : Below are given some probable characteristics of an in-effective teacher, which of them is most likely to be characterized the ineffective teacher (a) Emphasis upon pupil discussion in the clarification of groups ... (c) Emphasis upon the control of the immediate situation (d) None of the above

Last Answer : (c) Emphasis upon the control of the immediate situation

Most benign cause of postmenopausal bleeding Cervical polyp Atrophic vaginitis 112-Pt came by hx os sudden eye pain burning vision photophobia and by ex. Small pupil and keretic cell on cornea and cell in humorus Ttt Cyclospoine + corticosteroid

Description : Most benign cause of postmenopausal bleeding Cervical polyp Atrophic vaginitis 112-Pt came by hx os sudden eye pain burning vision photophobia and by ex. Small pupil and keretic cell on cornea and cell in humorus Ttt Cyclospoine + corticosteroid

Last Answer : Cyclospoine + corticosteroid

patient has complete ptosis in hih rt eye. pupil is out and down, fixed dilated. restricted ocular movements. dx a. 3rd n palsy. b. 4th n palsy. c. 3rd and 4th. d. 6th n palsy

Description : patient has complete ptosis in hih rt eye. pupil is out and down, fixed dilated. restricted ocular movements. dx a. 3rd n palsy. b. 4th n palsy. c. 3rd and 4th. d. 6th n palsy

Last Answer : a. 3rd n palsy.

In maxilla fracture, if intra cranial pressure increases:** A. It is normal B. Typically associated with tachycardia C. Associated with blood pressure D. Usually subsides spontaneously E. Typically associated with constricted and un-reactive pupil

Description : In maxilla fracture, if intra cranial pressure increases:** A. It is normal B. Typically associated with tachycardia C. Associated with blood pressure D. Usually subsides spontaneously E. Typically associated with constricted and un-reactive pupil

Last Answer : C. Associated with blood pressure

The junction of optic nerve and retina is insensitive to light and no image is formed here , it is known as ______. a)blind spot b)yellow spot c) fovea d)pupil

Description : The junction of optic nerve and retina is insensitive to light and no image is formed here , it is known as ______. a)blind spot b)yellow spot c) fovea d)pupil

Last Answer : a)blind spot

The _______ the amount of light entering the eye. a)iris b)pupil c)cornea d)lens

Description : The _______ the amount of light entering the eye. a)iris b)pupil c)cornea d)lens

Last Answer : a)iris

The following action of adrenaline is mediated by both α and β receptors producing the same directional effect: A. Cardiac stimulation B. Intestinal relaxation C. Dilatation of pupil D. Bronchodilatation

Description : The following action of adrenaline is mediated by both α and β receptors producing the same directional effect: A. Cardiac stimulation B. Intestinal relaxation C. Dilatation of pupil D. Bronchodilatation

Last Answer : B. Intestinal relaxation

A suspected case of poisoning has been brought to the casualty with weakness, fainting, involuntary passage of urine and stools, profuse sweating, salivation, watering from nose and eyes. His pulse is 120/min, low volume, BP 90/60 mm Hg, respiration shallow, pupil constricted, muscles flabby with occasional fasciculations. Which is the most likely type of poisoning: A. Belladonna B. Barbiturate C. Anticholinesterase D. Dicophane (DDT

Description : A suspected case of poisoning has been brought to the casualty with weakness, fainting, involuntary passage of urine and stools, profuse sweating, salivation, watering from nose and eyes. His pulse ... likely type of poisoning: A. Belladonna B. Barbiturate C. Anticholinesterase D. Dicophane (DDT

Last Answer : C. Anticholinesterase

The sympathetic and parasympathetic systems exert functionally opposite influences on the following parameters except: A. Heart rate B. Atrial refractory period C. Pupil diameter D. Intestinal motility

Description : The sympathetic and parasympathetic systems exert functionally opposite influences on the following parameters except: A. Heart rate B. Atrial refractory period C. Pupil diameter D. Intestinal motility

Last Answer : B. Atrial refractory period

The following action of adrenaline is not mediated by β receptors: A. Dilatation of blood vessels B. Dilatation of pupil C. Bronchodilation D. Renin release from kidney

Description : The following action of adrenaline is not mediated by β receptors: A. Dilatation of blood vessels B. Dilatation of pupil C. Bronchodilation D. Renin release from kidney

Last Answer : B. Dilatation of pupil

The following action of adrenaline is mediated by both α and β receptors producing the same directional effect: A. Cardiac stimulation B. Intestinal relaxation C. Dilatation of pupil D. Bronchodilatation

Description : The following action of adrenaline is mediated by both α and β receptors producing the same directional effect: A. Cardiac stimulation B. Intestinal relaxation C. Dilatation of pupil D. Bronchodilatation

Last Answer : B. Intestinal relaxation