The nervous system is responsible for voluntary/involuntary movement. The glands of the endocrine system produce hormones that are responsible for growth, metabolism, sexual function, etc.
It is problematic due to antibiotic-resistance that would
occur. This extensive use and abuse of antibiotics result in the emergence of resistant
strains of bacteria. Some types of
bacteria that cause serious infections in humans have already developed
resistance to most or all of the available treatments, and there are very few
promising options in the market.
The process of
prenatal development occurs in three main stages and they are listed in order;
<span>1. </span>Germinal Stage - begins at conception when the
sperm and egg cell joined in one of the two fallopian tubes.
<span>2. </span>Embryonic Stage - begins at the beginning of
the third week after conception. This stage plays an important role in the
development of the brain.
<span>3. </span>Fetal Stage - begins during the ninth week
and lasts until birth.
