Cones are concentrated at the center of retina called fovea centralis where no rod cells are present.
The retina is the innermost lining of the eye, made up of thousands of light-sensitive cells, with an inner part of nerve tissue and a pigmented outer part. It plays a fundamental role in the formation of images, which will be projected and then sent to the brain, through electrical impulses.
The retina consists of three types of layers: bipolar neurons, ganglion neurons and photosensitive cells.
Bipolar neurons promote the union of photosensitive cells with ganglion neurons, which are grouped with nerve fibers and thus originate the optic nerve. It carries nerve impulses to the brain. Photosensitive cells, due to their shape, are named in two types: cones and rods.
There are about 6 million cones that are concentrated in a small depression located in the macula lutea (center of the retina) called the fovea. They have an elongated and cylindrical shape, with conical outer segments. It is in this region that the image is most clearly formed, as they are stimulated by the most intense light. Cones are specialized in the accuracy of daytime vision and in recognizing color. There are three types of cones that have fundamental photopigments that respond to light of wavelengths (λ): cyanopigment - S cones (short λ) - sensitive to blue color, chloropigment - M cones (medium λ) - sensitive to green color and erytopigment - cones L (λ long) - sensitive to red color. The brain interprets the signals received by these cones, which allows it to process color differentiation.
Answer:
The correct answer is B. SOCIAL SUPPORT
Explanation:
When Lorraine's twins were born nine weeks early and were hospitalized because of their prematurity,she spent every day at the hospital with them. Her neighbors wanted to help in any way they could, so they cut her lawn and watered her flowers while she was gone. Lorraine's parents helped by caring for her 3-year-old son, so Lorraine could be with the babies. The help she received in her time of need from her neighbors and parents is best described as SOCIAL SUPPORT
Answer: I think the answer is C
Explanation:
A quarter is a fourth of something. In this case a quarter is a fourth of an hour. An hour is 60 minutes, and a fourth of that is 15 minutes (60 divided by 4).
So quarter past 3 is 3:15
the answer to this is
C.
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