Answer:
The correct answer to the question: The pineal body secretes which hormone that maintains the body´s internal clock, the 24-hour wake-sleep cycle, and regulates the onset and duration of sleep?, would be, C: Melatonin.
Explanation:
The process of sleep and wakefulness, also called the circadian cycle, its a pretty complex system that is controlled by several parts of the brain, but most importantly, structures of the diencephalon (vital is the hypothalamus), the pineal gland, and the stem of the brain. All these structures, and some others, respond to changes both in light perception by the eyes and other senses, heat, and homeostatic balances. These factor play a vital role in telling the human body that it is time for sleep, or to awaken. The pineal gland, as part of this melody, is essential, as it secretes the hormone, melatonin, in response to light changes. Melatonin will balance out the process of sleep, when it is secreted in high quantities by the pineal gland, and wakefulness, when it is no longer secreted in response to the presence of light. This is what is called the circadian cycle.
Answer: Blister
Explanation:
A blister is a fluid filled bubble like structure which develops in the uppermost layer of the skin that is epidermis. It may also form within the epidermis and dermis.
It develops due to friction, infection, freezing, burning, burns and contact with chemicals. Blister can also be caused due to diseases.
It can be filled with blood, plasma, serum and pus.
Explanation:
Quickening it is the process of the movement of the fetus , which is felt by the mother . It is observed in the second trimester .
The process of quickening is a natural phenomenon , which occurs in middle of the pregnancy .
The quickening process for a first time pregnant women is felt at around 18 - 20 weeks ,
And , the quickening process for a para woman , i.e. , who has given birth at least once is felt at around 15 - 17 weeks .
Answer:
Modern people are using the Earth for many things like farming, technology, art, and more.
Explanation:
Farming is a form of agriculture, people who farm can make money off of selling their crops, and they can also feed themselves.
Technology is a mix of mathematics, science, and the arts. Without technology, phones, laptops, cars, and other electronics would not exist right now. We need cars for transportation to get from Point A to Point B, and we use our phones and laptops for communication and entertainment.
Art is the form of human activities in creating visual, auditory or performing artifacts. Without art, life wouldn't be very pleasurable. People want to express themselves, and people want to see beauty. Art also helps historians tell about the past.
Hope this helped!
