Answer:
The answer is - Tetany
Explanation:
Tetany is a sustained contraction which can either be fused (one smooth sustained contraction plateau) or unfused (incomplete due to wavering contraction). Tetany occurs when the muscle contracts uncontrollably and can also be as a result of electrolyte imbalance such as low calcium, magnesium deficiency, low potassium. When the sarcomeres are stimulated so quickly causing a sustained contraction it is called tetany.
Answer:
zygomaticus Major
Explanation:
The Zygomaticus major , is one of the muscle of the human body , it is one the facial muscle responsible for smiling or laughing . Like other muscles responsible for facical expressions , the zygomaticus major is also innervated by the facial nerves.
The zygomaticus major extends from our cheekbone to the corners of the mouth.
Basically ,
When the <u>Zygomaticus major</u> contracts , the corner of the mouth is drawn upward , during the process of laughing.
The correct answer is A. Public health improvements have contributed to world population growth.
Explanation
Public health is a discipline that is responsible for studying issues related to health improvement, disease control, and elimination. For this reason, it has been a determining factor for population growth in the last decades this can be explained as in previous centuries health services and disease control conditions were more limited due to the lack of study in these fields but today, there are instruments such as microscopes, tests, exams, among others to control and eliminate diseases. Also, the health conditions are more rigorous which reduces death rate and support population growth. So, the correct answer is A. Public health improvements have contributed to world population growth.
