Answer:
Answer:
Anatomically this is because there are no neurons or blood vessels covering the cones.
Explanation:
Fovea centralis and its containing cones cell is surrounded by the macula lutea to form a depression or pit in the retina. The abundant cones cells provide high visual acuity characteristic of the fovea.
In addition an area in the fovea of no blood cells called fovea avascular zone allows light rays to be focused on the fovea, with less scattering,this minimises the losses of incident lights on the fovea, and therefore reception of maximum light rays from objects for acute vision.
Therefore the presence of abundant cones cells in the fovea together with the presence of fovea avascular (area with no blood cells)which reduces dispersion of light rays for maximum receptions are responsible for high visual acuity of the fovea.
This explains the reasons why fovea is refereed to as the center for primary vision or fovea vision where high degree of visual activity is needed such as focusing with microscope, reading,knitting and driving
Explanation:
Answer:
Cell: Basic unit of structure and function of all living things. ... Organ: Structure composed of one or more types of tissues. ... is the digestive system, which breaks down food into a form that cells can use. ... organized into the following levels: cells, tissues, organs, and organs system(s)
Explanation:
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The answer that best completes the statement above is this: POSTERIOR TIBIAL. Based on the nurse's assessment, stabbing pain and burning sensation is reported as the subjective cue and the skin of the foot is lighter. Given this result, this would clearly mean that the artery in the left foot is being occluded. And the artery present here is the posterior tibial artery. The stabbing pain and burning sensation being felt of the patient is a result of lack of oxygen in the area since the blood can no longer circulate.
Answer:
A.) Ask an older sibling to step in and help weigh the pros and cons.
Explanation: just took the test
