It prevent
an action potential if it blocks the movement of sodium across the membrane. The
primary feature of a neuron that prevents the action potential from traveling
back from where it just passed is the absolute refractory period. It holds an
action potential if it blocks the movement of sodium across the membrane.
Ok idk if there was a picture that was supposed to go with that cause I don't see one but here are some vestigial structures in humans: Appendix, Pinky toe (debatable possible used for balance) , ear muscles, tail bone, wisdom teeth, nictitating membrane, male nipples (sorry to be gross), and goosebumps. Those are the ones I can remember. Hope this helps!
Organisms tend to be larger in size at higher trophic levels, but their smaller numbers result in less biomass. biomass is the total mass of organisms at a trophic level.
Digestion is when the food is desolved, absorption is when the cells esorb the absorvbs the minerals. And respiration is when you work the lungs and breath!
hope this halps and maybe a brainly?
