Answer:
the area of the upper limb between elbow and hand
Answer:
C
Explanation:
This is because a solid particles are so packed tightly together, they're fixed in their position and can't move past one another, unlike liquids particles.
*Blood flow is regulated in all three types of blood vessels through constriction and dilation.
*Contraction of blood vessels slows blood flow, while relaxation of blood vessels, or dilation, allows free flow of blood.
*Muscle fibers control the constriction and dilation of vessels. In the capillaries, rings of muscle called capillary sphincters control blood flow.
*The directional flow of blood in the veins is controlled with valves , which prevent backward blood flow when closed, and allow blood to flow only toward the heart when open.
Vasoconstriction and vasodilatation allow blood vessels (arteries and veins) to control blood flow and thus control the blood pressure. This is possible because of the smooth muscle cells that surround the vessels. The contraction and dilatation of those muscles is controlled by chemical signals (e.g. norepinephrine constricts the vessels, while NO dilates them).
Measuring the volume of an object you are finding the amount of three dimensional space the object occupies
an natural pathway by which essential elements of living matter are circulated.
Nitrite was the preferred nitrogen for denitrification,followed by nitrate and no significant
