Answer:
DNA is the hereditary material found in the nucleus of eukaryotic cells (animal and plant) and the cytoplasm of prokaryotic cells (bacteria) that determines the composition of the organism. DNA is found in the nucleus of every cell, and it is exactly the same in each cell.
Explanation:
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The first law. Planets orbit is an ellipse with the Sun at one focus.
Answer:
Primary lymphoid organs: These organs include the bone marrow and the thymus. They create special immune system cells called lymphocytes.
Secondary lymphoid organs: These organs include the lymph nodes, the spleen, the tonsils, and certain tissue in various mucous membrane layers in the body (for instance in the bowel). It is in these organs where the cells of the immune system do their actual job of fighting off germs and foreign substances.
Also...
Bone marrow is a sponge-like tissue found inside the bones. That is where most immune system cells are produced and then also multiply. These cells move to other organs and tissues through the blood. At birth, many bones contain red bone marrow, which actively creates immune system cells. Over the course of our life, more and more red bone marrow turns into fatty tissue. In adulthood, only a few of our bones still contain red bone marrow, including the ribs, breastbone, and pelvis.
<span>Losing proprioception is when the specialized sensory receptors on
nerve endings found in muscles, joints, tendons and inner ear is not working
properly. Their ability to receive and send information on the positioning of
the body and movement can execute protective reflexes to prevent an injury. Thus,
walking on a leg that has ‘fallen asleep” is similar to losing proprioception
which joint stability is not present.</span>
