Answer: E. All of the above
Explanation:
Hormones are called as the chemical messengers. These are secreted by the specialized cells of body and their action is on other cells of the body that are called as the target. The following can alter the hormonal levels in the body:
A. Changes in mineral and nutrient plasma levels: The minerals and nutrients can supports the amount of secretion of the hormones.
B. Pituitary tumor: The pituitary gland is a secretor of various hormones if the tumor produces over the pituitary gland then this will lead to the inhibition of hormone secretion from pituitary.
C. Transatlantic flight: The flight above the dense ocean is called as transatlantic flight. This may be responsible for increase in secretion of hormones which are responsible for increasing the stress and anxiety.
D. Training for the Olympics: In such a situation, the hormones which can increase the performance will be released such as testosterone.
Answer: The right answer is D. all of the above.
Answer:
The “lub” is the first heart sound, commonly termed S1, and is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole. The second sound,” dub” or S2, is caused by the closure of aortic and pulmonic valves, marking the end of systole.
Explanation:
To round a number to the nearest tenth , look at the next place value to the right (the hundredths). If it's 4 or less, just remove all the digits to the right. If it's 5 or greater, add 1 to the digit in the tenths place, and then remove all the digits to the right.
Answer:
Bacteria are highly adaptable microorganisms who have the capability of developing defense mechanisms against that which may harm them. Not least important of all, is the easiness with which some bacteria, especially pathogenic bacteria like Salmonella, or Klebsiella, develop mechanisms of resistance to antiseptics and, most importantly, antibiotics.
Antibiotics are a chemical substance that was created, and has been developed, in order to be able to combat pathogenic microorganisms, specifically bacteria. However, because today these substances are being used indiscriminately, we are now seeing a very worrying pattern of antibiotic-resistance patterns in microorganisms that used to be sensible to them. The result, we are facing strains of pathogenic bacteria, like Klebsiella pneumonia and E. Coli, that have become resistan to all types of antibiotics, from first generation, to fourth generation. And this has meant that when people acquire infection by these pathogens, the likelihood of death by them has increased because there are no agents capable of combating them.
Exposure to antibiotics has been the sole reason why these resistant strains of bacteria have emerged, especially when these antibiotics are not necessary. And feeding these substances to animals, to ensure their development and weight gain, has not made the situation any better. Now, we are instead adding also bacteria to the list that did not use to be resistant, but that are becoming so as they become adjusted to the constant exposure to antibiotics. Again, the result has been: more people infected with bacterial strains that cannot be combated with any of the existing antibiotic agents.
