Answer:
Saturn. Saturn's rings are the most extensive ring system of any planet in the Solar System, and thus have been known to exist for quite some time. Galileo Galilei first observed them in 1610, but they were not accurately described as a disk around Saturn until Christiaan Huygens did so in 1655.
Explanation:
That's right, Venus (and the planet Mercury) are the only two planets that don't have a single natural moon orbiting them. Figuring out why is one question keeping astronomers busy as they study the Solar System.
The correct answer is option D, that is, neurons sense variations in the systems of the body, and hormones results in corrections.
The neuroendocrine system comprises of special cells known as neuroendocrine cells. They are dispersed all through the body. The neuroendocrine cells are found in almost every organ of the body. They are primarily found dispersed in the GI tract, colon, stomach, appendix, and esophagus.
The neuroendocrine cells produce and discharge hormones and identical substances, like peptides in reaction to chemical or neurological signals. The hormones then go into the blood and pass all through the body to the target cells. The hormones combine with particular receptors on the target cells that result in modifications in the cells and what they do.
Answer:
yoru answer is b
Explanation:
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