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What does it mean when the iris covers the pupil in an eye?

When the iris covers the pupil in an eye, it typically indicates that the pupil is in a constricted state. This could be due to bright light or a response to the body's fight-or-flight reaction. In some cases, it may also be a sign of a medical condition affecting the muscles that control the pupil's size.


What is the difference between a coma and being unconscious?

A coma is a prolonged state of deep unconsciousness where a person cannot be woken up and does not respond to stimuli, while being unconscious is a temporary state where a person is not responsive or aware of their surroundings but can still be awakened. Comas typically last longer and require medical intervention, while unconsciousness can be brief and resolve on its own.


What would not occur if the parasympathetic division was more active than the sympathetic division?

If the parasympathetic division was more active than the sympathetic division, the body would experience a decrease in heart rate, pupil dilation, and the release of stress hormones. Overall, the individual would be in a more relaxed state with lower blood pressure and slower breathing.


1 State an advantage having more than one type of photosynthetic pigment gives a plant?

pigment is any substance that absorbs light. The color of the pigment comes from the wavelengths of light reflected (in other words, those not absorbed). Chlorophyll, the green pigment common to all photosynthetic cells, absorbs all wavelengths of visible light except green, which it reflects to be detected by our eyes. Black pigments absorb all of the wavelengths that strike them. White pigments/lighter colors reflect all or almost all of the energy striking them. Pigments have their own characteristic absorption spectra, the absorption pattern of a given pigment. the Light Dependent Processes (Light Reactions) light strikes chlorophyll a in such a way as to excite electrons to a higher energy state. BTW this is a yahoo answers response so give the other person credit. :)


Which type of microscope allows the viewing of living cells?

A compound light microscope is commonly used to view living cells as it utilizes light to illuminate the specimen without damaging it. This type of microscope allows for observation of cells in their natural state, providing valuable insight into their behavior and functions.

Related Questions

What occurs in the light-adapted state?

In the light-adapted state, the eye's sensitivity to light decreases, allowing it to function optimally in bright conditions. This is achieved through pupil constriction, which reduces the amount of light entering the eye, and adjustments in the retina that involve the redistribution of visual pigments to enhance visual acuity.


What does it mean when the iris covers the pupil in an eye?

When the iris covers the pupil in an eye, it typically indicates that the pupil is in a constricted state. This could be due to bright light or a response to the body's fight-or-flight reaction. In some cases, it may also be a sign of a medical condition affecting the muscles that control the pupil's size.


What is the adverb shone?

To emit rays of light; to give light; to beam with steady radiance; to exhibit brightness or splendor; as, the sun shines by day; the moon shines by night., To be bright by reflection of light; to gleam; to be glossy; as, to shine like polished silver., To be effulgent in splendor or beauty., To be eminent, conspicuous, or distinguished; to exhibit brilliant intellectual powers; as, to shine in courts; to shine in conversation., To cause to shine, as a light., To make bright; to cause to shine by reflected light; as, in hunting, to shine the eyes of a deer at night by throwing a light on them., The quality or state of shining; brightness; luster, gloss; polish; sheen., Sunshine; fair weather., A liking for a person; a fancy., Caper; antic; row., Shining; sheen.


What is the Vermont average cost per pupil?

The average cost per pupil in the state of Vermont is $15,925. This is quite a bit higher than the national average of $10,560.


What expands and contracts to change the size of the pupil?

The pupil changes size because of a little organ called the iris. The iris works like a gate or like the shutter on a camera. It is nearly closed when the light is very bright. It is wide open in very little light.


What is a pupilage in law?

pu·pil·age also pu·pil·lage play_w2("P0664800") (pyp-lj) n. The state or period of being a pupil. hm()


Are amber light bars legal on vehicle without permits?

Generally, no, although the laws may vary by state, and your best advice is to inquire with your state about them before mounting them.


Can you light firecrackers in the state of Nebraska before the Fourth of July?

In many states Fire Crackers are legal regardless because they are not deadly.


State with the most light houses?

The state with the most light houses is Michigan.


What change occurs with the atom when it is emitting light?

When an atom emits light, an electron in the atom transitions from a higher energy state to a lower energy state. This transition releases energy in the form of a photon of light. The atom remains the same element before and after emitting light.


Which state help produce light in fluorescent light bulbs?

Which state helps produce light in fluorescent lightbulbs?


An excited atom decays to it's ground state and emits a proton of green light if instead the atom decays to an intermediate state what could the light emitted be?

If an atom that emits a green proton when it decays to its ground state decays to an intermediate state instead it will emit a proton that is yellow/orange/red. The reason is that it will be a lower energy proton emitted and lower energy waves correspond to longer wavelengths like the ones that make up these colors.