Iris is part of
- sclerotic
- choroid
- choroid and retina
- sclerotic and choroid.
The Correct Option is D
Solution and Explanation
Choroid is the middle layer of eye.
Uvea is the pigmented layer of eye that lies beneath sclera and cornea. It comprises of choroid, iris and ciliary body.
Retina is the inner layer of eye that contain photoreceptor cells.
Top Questions on neural control and coordination
Match List I with List II with respect in human eye.
List I
List II
A Fovea I Visible coloured portion of eye that regulates diameter of pupi B Iris II External layer of eye formed of dense connective tissue. C Blind spot III Point of greatest visual acuity or resolution D Sclera IV Point where optic nerve leaves the eyeball and photoreceptor cells are absent Choose the correct answer from the options given below:
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Questions Asked in NEET exam
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector \(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
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List I
List II
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Concepts Used:
Neural Control and Coordination
Neural System:
Neurons are the most specialised cells in the nervous system of all animals, and they are responsible for detecting, accepting, and conveying numerous types of motives. The neurological system of low-spinal animals like Hydra is incredibly simple, consisting of a network of neurons. When the brain of an insect comprises a vast number of ganglia and neural tissues, it is optimally structured.
Coordination System:
Coordination is the process by which two or more organs work together to accomplish each other's duties. Increased muscle activity increases the supply of oxygen and the demand for energy while we exercise. When we cease exercising, our nerves, heart, lungs, and kidneys all return to normal. As a result, all of the organs' functions are properly integrated in order to conduct the exercise and supply the appropriate conditions while exercising. Similarly, in the human body, the neurological and endocrine systems work together to coordinate all of the organ activities.