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sergey [27]
2 years ago
5

In the mid ____________ , ____________ was the first surgeon to introduce aseptic techniques into the operating room in an effor

t to reduce microbes and prevent infection.
Biology
1 answer:
svp [43]2 years ago
5 0

alantic and Semmelweis was the first

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in the dark, an object is more clearly seen when viewed in peripheral vision than when viewed directly. this phenomenon occurs b
sleet_krkn [62]

In the dark, an object is more clearly seen when viewed in peripheral vision than when viewed directly, this phenomenon occurs because the rods located in the retina are:<u> more </u><u>sensitive</u><u> in the dark than </u><u>cones</u>.

The retina extends through the posterior portion of the eyeball is the innermost layer and in it are the photoreceptors: cones and rods.

Rods and cones are the two types of photoreceptor cells in vertebrates that capture light energy (photons) and convert it into electrical signals.

  • The rods are sensitive to changes in light, since their detection thresholds are low, so they only come into operation when the light intensity is low (scotopic vision or night vision).

  • Scotopic vision has relatively low acuity, as the details of an object cannot be discerned or its color appreciated.

  • On the contrary, cones have a much higher threshold for light, they are responsible for daytime vision (photopic vision) and their mission is to detect colors and shapes (details).

Therefore, we can conclude that in the dark, an object is more clearly seen when viewed in peripheral vision than when viewed directly, this phenomenon occurs because the rods located in the retina are: more sensitive in the dark.

Learn more here: brainly.com/question/14018797

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2 years ago
The process used to separate pigment
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It's called Chromatography. 
8 0
3 years ago
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What is the role of the gizzard in bird digestion?
viktelen [127]

The correct answer is C. To store gastroliths that physically grind up food.

Explanation

The gizzards, are a special part of the digestive system of some animals such as birds, fish, and reptiles whose main function is to crush the food that the animal ingests, for this task, the gizzards contain in their interior gastroliths, a kind of polished stones, that grinds the food that the animal eats. The gizzards represent an important part for these animals because many of them do not have teeth to crush their food and feed on it. So, the correct answer is C. To store gastroliths that physically grind up food.

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