Peripheral nervous system (PNS) is the nervous system that contains nerves and ganglia outside the central nervous system (CNS). PNS is divided into:
somatic (voluntary) nervous system-controls the movements of the skeletal muscles
autonomic (involuntary) nervous system-controls the smooth muscles and glands and thus it is the regulator of the major body functions. It is subdivided into tree groups:
sympathetic ("fight and flight") system-responsible for stressful and active situations (but also in normal conditions);contains short preganglionic fibers and long postganglionic fibers.
parasympathetic ("rest and digest") system-opposite to sympathetic, responsible for the maintenance of body's activities at rest.
enteric nervous system-controls the function of the gastrointestinal tract.
shaped curve with logistic growth" is the one among the following choices given in the question that describes the growth curve of the rabbit population now that the foxes have arrived I don't know if this helps.
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Among the choice the one that makes human embryonic stem cells that are derived from a 5-day old embryo important to stem cell research is <span>They have the capacity for long-term self-renewal in laboratory culture.</span>
<span>It
is important that antibodies have a symmetrical quaternary structure to create
two identical binding sites for antigens. An antibody is a relatively large
protein having a Y-shape. Plasma cells produce antibodies which are then used
by the immune system to fight off pathogens (e.g. bacteria and virus). The antibody
is able to recognize the antigen of the pathogen. It binds with it either to
neutralize it directly or “tag” the microbe for future attack by other parts of
the immune system. </span>
