The physical changes during puberty are due to <u>secondary sex characteristics</u>
Explanation:
Origin: Secondary sex characteristics in male typically originate at the onset and develop during puberty from 9-16 years.
Mechanism: The hypothalamus of the brain initiates the release of follicular stimulating and leutinizing hormones which trigger the Sertoli cells of the testes to begin spermatogenesis and the interstitial cells of Leydig to produce the male sex hormone testosterone.
It is this release of testosterone that leads to the development of secondary sexual characteristics like:
- Muscular and strong body
- Deepening of voice
- Growth of facial, axillary (underarm) and pubic hair
- Enlargement of reproductive organs like the scrotum, testes, etc; along with penis lengthening
- Spermatogenesis begins along with feelings of sexual drive during this adolescent period
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The difference between drugs and medicines is pretty basic, but a lot of people often interchange them. The main thing that differentiates them are their legality and society's perception of them. Both are used for the treatment or cure of diseases, but drugs have a more stimulating and addictive effect to the body than medicine. On the other hand, medicines generally don't have such effects.
Cream Masks are recommended.
Answer:
The pancreas produces the hormone insulin that is responsible for carrying sugar from my body to the cells for use. It has been shown that obese people will have a high incidence of diabetes, therefore it is advisable to lose weight and have a proper diet.
Answer:
1.They contain half the genetic material of their mother cells, and they become gametes.
Explanation:
Meiosis is the process through which gametes (in humans, sperm cells and egg cells) are created.
Before meiosis, the DNA is replicated in the diploid parental cell. Then, the parental cell undergoes 2 cell divisions: meiosis I and meiosis II.
After meiosis I, the cells are diploid (contain the same amount of genetic material as the parent cell. They divide again during meiosis II, to produce a total of four cells containing half the amount of DNA as the mother cells.
These cells go on to become gametes.
