If the lymph system did not exist: A. Blood vessels could not carry oxygen
B. Tissues would swell from protein leaks
C. Capillary exchange would be more efficient
D. Your kidneys would not work

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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i dont know it at allnow im just getting points at this pint

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.

gag reflex, poor dentition, gum retraction

have a good day