Answer:
The inferior region of the brain stem, the <u>medulla oblongota</u> houses many vital autonomic centers involved in the control of heart rate, respiratory rhythm, and blood pressure.
Explanation:
The medulla oblongata is the part of the brain that joins the spinal cord and forms the lower part of the brain stem. In the bulb there are ascending (sensory) and descending (motor) fascicles that communicate the spinal cord with the brain, in addition to numerous nuclei or centers (masses of gray matter) that regulate various vital functions. The medulla oblongata has the function of controlling vital and unconscious elements such as the heartbeat and blood pressure. Thus, it is responsible for maintaining the heart rate and regulating vasoconstriction. Also, it manages the control of respiratory function, maintaining it at all times.
<span>keeping their stomata open just enough to allow photosynthesis to take place but not so much that they lose an excessive amount of water. Leaves take in carbon dioxide and give off oxygen during photosynthesis.</span>
Answer:
The water cycle is also known as the hydrological cycle. It shows how water is circulated continuously within the atmosphere of the Earth.
Evaporation is the process where water, when heated, goes from the liquid to gaseous state in the form of vapor. This is how water gets from the geosphere to the atmosphere. As the vapor rises, the air around it gets cooler, and this is where condensation occurs. Condensation is the process where vapour will turn into its liquid state. As more vapour condense they start to form clouds. When the cloud gets dense enough, the water falls back to Earth through precipitation.
The human body has living cells that interact with other living cells (Food) and inorganic cells (Salt, Oxygen). It also has a lot of chemical reactions that simultaniously happen inside of it.
Inorganic systems usually do not interact with themselves, and the reactions are mostly exterior.
Administer varicella vaccine to the health 6-year old child (who does not have evidence of immunity to varicella) was exposed to a confirmed case of varicella 2 days ago.
Explanation:
It is seen that if a child receives varicella vaccine between 3 to 5 days of exposure, he is safe as disease will not appear in him and would be saved for future infections.
Varicella vaccine is given for prevention against small pox. It is expected once immunised with varicella body will produce antibodies for a span of twenty years or more.
