In the eye, colour vision is effected by the presence of : (1) Choroid coat (2) Sclerotic coat (3) Rods (4) Cones

In the eye, colour vision is effected by the presence of : (1) Choroid coat (2) Sclerotic coat (3) Rods (4) Cones
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Cones
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In the eye, colour vision is effected by the presence of - (1) Choroid coat (2) Sclerotic coat (3) Rods (4) Cones

Description : In the eye, colour vision is effected by the presence of - (1) Choroid coat (2) Sclerotic coat (3) Rods (4) Cones

Last Answer : (4) Cones Explanation: Cone cells, or cones, are photoreceptor cells in the retina of the eye that are responsible for color vision, they function best in relatively bright light, as opposed to ... , but quickly reduce in number towards the periphery of the retina. It allow the perception of colour

Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions characteristics. (a) C-Aqueous chamber-Reflects the light which does not pass through the lens. (b) D - Choroid - Its anterior part forms ciliary body. (c) A - Retina - Contains photoreceptors, i.e., rods and cones. (d) B - Blind spot-Has only a few rods and cones.

Description : Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions characteristics. (a) C-Aqueous chamber-Reflects the light which does not ... , i.e., rods and cones. (d) B - Blind spot-Has only a few rods and cones.

Last Answer : (c) A - Retina - Contains photoreceptors, i.e., rods and cones.

What part of the eye gets inflamed and becomes pink when dust gets into ? (1) Cornea (2) Choroid (3) Conjunctiva (4) Sclerotic

Description : What part of the eye gets inflamed and becomes pink when dust gets into ? (1) Cornea (2) Choroid (3) Conjunctiva (4) Sclerotic

Last Answer : Conjunctiva

The colour of the eye depends upon the pigment present in - (1) cornea (2) iris (3) rods (4) cones

Description : The colour of the eye depends upon the pigment present in - (1) cornea (2) iris (3) rods (4) cones

Last Answer : (2) iris Explanation: Eye colour 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 ... iris stroma (located at the front of the iris), and the cellular density of the stroma.

The colour of the eye depends upon the pigment present in (1) cornea (2) iris (3) rods (4) cones

Description : The colour of the eye depends upon the pigment present in (1) cornea (2) iris (3) rods (4) cones

Last Answer : iris

Iris is part of (a) sclerotic(b) choroid (c) choroid and retina (d) sclerotic and choroid.

Description : Iris is part of (a) sclerotic (b) choroid (c) choroid and retina (d) sclerotic and choroid.

Last Answer : (d) sclerotic and choroid.

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

Select the answer with correct matching of the structure, its location and function. Structure Location Function (a) Eustachian Anterior Equalizes air tube part of pressure on internal ear either sides of tympanic membrane (b) Cerebellum Midbrain Controls respiration and gastric secretions (c) Hypothal Forebrain Controls body -amus temperature, urge for eating and drinking (d) Blind spot Near the place Rods and cones where optic are present but nerve leaves inactive here the eye

Description : Select the answer with correct matching of the structure, its location and function. Structure Location Function (a) Eustachian Anterior Equalizes air tube part of pressure on internal ear either sides ... the place Rods and cones where optic are present but nerve leaves inactive here the eye

Last Answer : (c) Hypothal Forebrain Controls body -amus temperature, urge for eating and drinking

In mammalian eye, the ‘fovea’ is the center of the visual field, where (a) only rods are present (b) more rods than cones are found (c) high density of cones occur, but has no rods (d) the optic nerve leaves the eye.

Description : In mammalian eye, the ‘fovea’ is the center of the visual field, where (a) only rods are present (b) more rods than cones are found (c) high density of cones occur, but has no rods (d) the optic nerve leaves the eye.

Last Answer : (c) high density of cones occur, but has no rods

In which part of the eye lies the pigment that decides the colour of the eyes of a person’? (1) Corea (2) Choroid (3) Iris (4) Vitreous body

Description : In which part of the eye lies the pigment that decides the colour of the eyes of a person’? (1) Corea (2) Choroid (3) Iris (4) Vitreous body

Last Answer : (3) Iris Explanation: The iris is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupils and thus the amount of light reaching the retina. "Eye color" is ... the center of the iris, known as the pupil. The larger the pupil, the more light can enter,

In which part of the eye lies the pigment that decides the colour of the eyes of a person? (1) Cornea (2) Choroid (3) Iris (4) Vitreous body

Description : In which part of the eye lies the pigment that decides the colour of the eyes of a person? (1) Cornea (2) Choroid (3) Iris (4) Vitreous body

Last Answer : Iris

With regard to the choroid: a. the choroid receives 85% of blood flow to the eye b. the blood vessels in the choroid contains tight junction c. the choroid vessels are embedded in a matrix made up of type III collagen d. in the presence of high partial pressure of carbon dioxide the choroidal vessels increase in diameter

Description : With regard to the choroid: a. the choroid receives 85% of blood flow to the eye b. the blood vessels in the choroid contains tight junction c. the choroid vessels are embedded in ... d. in the presence of high partial pressure of carbon dioxide the choroidal vessels increase in diameter

Last Answer : in the presence of high partial pressure of carbon dioxide the choroidal vessels increase in diameter

The bright-flash ERG: a. comes only from the cones b. is generated in a fully dark adapted eye by the highest intensity of light c. can be used to assess the overall retinal integrity in the presence of media opacity d. is abnormal in patients with age-related macular degeneration

Description : The bright-flash ERG: a. comes only from the cones b. is generated in a fully dark adapted eye by the highest intensity of light c. can be used to assess the overall retinal integrity in the presence of media opacity d. is abnormal in patients with age-related macular degeneration

Last Answer : can be used to assess the overall retinal integrity in the presence of media opacity

What is the difference between Rods and Cones? -Biology

Description : What is the difference between Rods and Cones? -Biology

Last Answer : answer:

Outer most layer of retina which holds sensory neuron like rods & cones is

Description : Outer most layer of retina which holds sensory neuron like rods & cones is

Last Answer : Outer most layer of retina which holds sensory neuron like rods & cones is

Outer most layer of retina which holds sensory neuron like rods & cones is

Description : Outer most layer of retina which holds sensory neuron like rods & cones is

Last Answer : Outer most layer of retina which holds sensory neuron like rods & cones is

Where is Rods and Cones present?

Description : Where is Rods and Cones present?

Last Answer : Retina

With regard to dark adaptation: a. is a quicker process than light adaptation b. the sensitivity of the cones increases more rapidly than the rods c. it is monophasic in rod monochromatism d. the first limb of the curve represents rod recovery

Description : With regard to dark adaptation: a. is a quicker process than light adaptation b. the sensitivity of the cones increases more rapidly than the rods c. it is monophasic in rod monochromatism d. the first limb of the curve represents rod recovery

Last Answer : it is monophasic in rod monochromatism

With regard to light perception: a. the fovea contains only cones b. the cones have a lower threshold to light than rods c. rods respond most to the red-yellow end of light d. rods respond most to wavelengths of about 500nm

Description : With regard to light perception: a. the fovea contains only cones b. the cones have a lower threshold to light than rods c. rods respond most to the red-yellow end of light d. rods respond most to wavelengths of about 500nm

Last Answer : rods respond most to wavelengths of about 500nm

True statement about dark adaptation include: a. there is a shift in peak spectral sensitivity from 555 nm to 505 nm with dark adaptation b. rods are more sensitive than cone during dark adaptation c. biphasic changes only occur in retina which processes both rods and cones d. all above

Description : True statement about dark adaptation include: a. there is a shift in peak spectral sensitivity from 555 nm to 505 nm with dark adaptation b. rods are more sensitive than cone during dark adaptation c. biphasic changes only occur in retina which processes both rods and cones d. all above

Last Answer : all above

Which one of the following statements is not correct? (a) Retinal is the light absorbing portion of visual photopigments. (b) In retina the rods have the photopigment rhodopsin while cones have three different photopigments. (c) Retinal is a derivative of vitamin C. (d) Rhodopsin is the purplish red protein present in rods only.

Description : Which one of the following statements is not correct? (a) Retinal is the light absorbing portion of visual photopigments. (b) In retina the rods have the photopigment rhodopsin while cones have three ... a derivative of vitamin C. (d) Rhodopsin is the purplish red protein present in rods only.

Last Answer : (c) Retinal is a derivative of vitamin C.

The light sensitive cells that respond to dim light are ________. a)cones b)rods c)cornea d)retina

Description : The light sensitive cells that respond to dim light are ________. a)cones b)rods c)cornea d)retina

Last Answer : b)rods

Optic nerve axon emerges from: a. Ganglion cells b. Rods and cones c. Amacrine cells d. Inner nuclear layer

Description : Optic nerve axon emerges from: a. Ganglion cells b. Rods and cones c. Amacrine cells d. Inner nuclear layer 

Last Answer : ANSWER: A

Night blindness is caused by: a. Central retinal vein occlusion b. Dystrophies of retinal rods c. Dystrophies of the retinal cones d. Retinal detachment

Description : Night blindness is caused by: a. Central retinal vein occlusion b. Dystrophies of retinal rods c. Dystrophies of the retinal cones d. Retinal detachment

Last Answer : ANSWER: B

Sensitive layer of the eye is? A. Choriods B. Sclerotic C. Retina (Answer) D. Cornea E. None of these

Description : Sensitive layer of the eye is? A. Choriods B. Sclerotic C. Retina (Answer) D. Cornea E. None of these

Last Answer : C. Retina (Answer)

Sensitive pigmented layer of eye is (a) cornea (b) retina (c) sclerotic (d) iris.

Description : Sensitive pigmented layer of eye is (a) cornea (b) retina (c) sclerotic (d) iris.

Last Answer : (b) retina

Choroid of eye lined by : -

Description : Choroid of eye lined by : -

Last Answer : Choroid of eye lined by : - A. Cuboidal Epithelium B. Squamous Epithelium C. Ciliated Epithelium D. Colummar Epithelium

Which of the following statements is not correct? (a) An action potential in an axon does not move backward because the segment behind is in a refractory phase. (b) Depolarisation of hair cells of cochlea results in the opening of the mechanically gated potassium-ion channels. (c) Rods are very sensitive and contribute to daylight vision. (d) In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.

Description : Which of the following statements is not correct? (a) An action potential in an axon does not move backward because the segment behind is in a refractory phase. (b) Depolarisation of hair cells ... d) In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.

Last Answer : (c) Rods are very sensitive and contribute to daylight vision.

True statements about visual adaptation include: a. light adaptation takes longer than dark adaptation b. dark adaptation reaches its maximum in about 20 minutes c. in dark adapted eye, a higher intensity of light is required to stimulate cones than rodsd. people who wear red goggles in the light adapt quicker in the dark than those who do not wear them

Description : True statements about visual adaptation include: a. light adaptation takes longer than dark adaptation b. dark adaptation reaches its maximum in about 20 minutes c. in dark adapted eye, a higher intensity ... wear red goggles in the light adapt quicker in the dark than those who do not wear them

Last Answer : in dark adapted eye, a higher intensity of light is required to stimulate cones than rods

What is sclerotic sacral lesion?

Description : What is sclerotic sacral lesion?

Last Answer : Sclerosis when describing bone is defined as a pathologicthickening of the bone. Usually one area of bone will show thisincreased thickening. Sclerotic lesions are often seen in longbones, but can be ... on x-rays. Further workup to find the underlying cause of a sclerotic lesion isneeded.

How do you treat aorta sclerotic?

Description : How do you treat aorta sclerotic?

Last Answer : Need answer

The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of

Description : The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of

Last Answer : The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a ... Vitamin B 1 C. Vitamin C D. Vitamin D

The real application of knuckle joint is used to connect three rods - two with forks and a third with the eye. A. True B. False

Description : The real application of knuckle joint is used to connect three rods - two with forks and a third with the eye. A. True B. False

Last Answer : A. True

According to Mendelism, which character shows dominance? (a) Terminal position of flower (b) Green colour in seed coat (c) Wrinkled seeds (d) Green pod colour

Description : According to Mendelism, which character shows dominance? (a) Terminal position of flower (b) Green colour in seed coat (c) Wrinkled seeds (d) Green pod colour

Last Answer : (d) Green pod colour

What is the outer transparent coat of the human eye calleds?

Description : What is the outer transparent coat of the human eye calleds?

Last Answer : ANSWER: CORNEA

Compare choroid and retina. -Biology

Description : Compare choroid and retina. -Biology

Last Answer : answer:

What are the chemical signals of sodium choroid ?

Description : What are the chemical signals of sodium choroid ?

Last Answer : : The chemical signal of sodium choroid (food salt) is NaCl

What is choroid ?

Description : What is choroid ?

Last Answer : : The chord is the layer below the sclera level.

The function of choroid plexus is

Description : The function of choroid plexus is

Last Answer : The function of choroid plexus is A. To produce lymph B. To produce blood C. To produce cerebrospinal fluid D. To produce endolymph

Anterior part of choroid layer which hold lens by ligaments is

Description : Anterior part of choroid layer which hold lens by ligaments is

Last Answer : Anterior part of choroid layer which hold lens by ligaments is

Anterior part of choroid layer which hold lens by ligaments is

Description : Anterior part of choroid layer which hold lens by ligaments is

Last Answer : Anterior part of choroid layer which hold lens by ligaments is

Maximum quantity of Zinc is present in the body in (A) Prostate (B) Choroid (C) Skin (D) Bones

Description : Maximum quantity of Zinc is present in the body in (A) Prostate (B) Choroid (C) Skin (D) Bones

Last Answer : Answer : C

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.

Give reason: Choroid is thick and rich with blood vessels

Description : Give reason: Choroid is thick and rich with blood vessels

Last Answer : Choroid has a layer of blood vessels which nourishes the back of the eye.

All of the following are part of uvea except: a. Pars plicata b. Pars plana c. Choroid d. Schwalbe’s line

Description : All of the following are part of uvea except: a. Pars plicata b. Pars plana c. Choroid d. Schwalbe’s line

Last Answer : ANSWER: 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 : Iris

The daylight/photopic or colour vision and twilight/scotopic vision are function of respectively

Description : The daylight/photopic or colour vision and twilight/scotopic vision are function of respectively

Last Answer : The daylight/photopic or colour vision and twilight/scotopic vision are function of respectively

The daylight/photopic or colour vision and twilight/scotopic vision are function of respectively

Description : The daylight/photopic or colour vision and twilight/scotopic vision are function of respectively

Last Answer : The daylight/photopic or colour vision and twilight/scotopic vision are function of respectively

23 Which one of the following sets of colour combinations is added in colour vision in TV? A. Red, green and blue B. Orange, black and violet C. White, red and Yellow D. Green, Yellow and Blue

Description : 23 Which one of the following sets of colour combinations is added in colour vision in TV? A. Red, green and blue B. Orange, black and violet C. White, red and Yellow D. Green, Yellow and Blue

Last Answer : ANSWER: A

Which one of the following is responsible for the working of New-ton's colour disc experiment? (1) Formation of pure spectra (2) Formation of impure spectra (3) Persistence of vision (4) Principle of complementary colour

Description : Which one of the following is responsible for the working of New-ton's colour disc experiment? (1) Formation of pure spectra (2) Formation of impure spectra (3) Persistence of vision (4) Principle of complementary colour

Last Answer : (3) Persistence of vision Explanation: A Newton Disc can be created by painting a disc with the seven different colours. A combination of red, green and blue in the circular disc will yield the same result. This is due to the phenomenon called persistence of vision.