Which statement correctly describes an aspect of the nervous system? A. Sensory receptors in the spinal cord send messages to the rest of the body.
B. The brain and spinal cord make up the CNS.
C. The PNS is the control center of the body.
D. Neurons are made up of bundles of nerves.

Which technically is nasa developing that will astronauts reach mars

The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i. e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above