The myelin sheath that covers many cns axons is formed by oligodendrocytes.
Oligodendrocytes are type of neuroglia (non-neural cells found in central nervous system) with protective, trophic and supportive role. Their function is to insulate axons (with myelin sheath), in the central nervous system (CNS) which is, equivalent to the function performed by Schwann cells in the peripheral nervous system (PNS).
Pulmonary artery carry blood from the right ventricle of the heart to the lungs for oxygenation.
I think the correct answer from the choices listed above is option C. Endosymbiosis can best be described as one organism living completely inside another organism. <span>Symbiogenesis, or </span>endosymbiotic theory<span>, is an evolutionary </span>theory<span> which explains the origin of eukaryotic cells from prokaryotes.</span>
Answer:
I believe the answer is A because if shrimp eat phytoplankton, and squid eat shrimp this should work. I am not positive but I hope this helps.
