Answer:
The areas that have had the action potential are refractory to a new action potential.
Explanation:
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The crayfish have its nerve cord on the ventral side rather than on the dorsal side. The ventral side is under the Crayfishes' exoskeleton, as opposed to the dorsal side where the exoskeleton is . If it is attacked it will be from the dorsal side and the nerve cord would be snapped easier. The function of the nerve cord is that if it gets attacked by a predator they will go for the top and it will still be able to move.
Answer:
Phytoplanktons are photosythetic organisms found near ocean surface and provide food to a wide variety of sea creatures like whale, shrimp, jelly fish etc. They also rely on nutrients such ad nitrates, phosphate for their development. They maintain a balance ecosystem and food web in ocean.
A vasa recta is not associated with the renal corpuscle, whereas a podocyte, a fenestrated capillary, and an efferent arteriole are.
<span>It depends upon what type of cell which underwent the division.
If it is a somatic cell and it underwent mitosis, the number of chromosomes remains
unchanged at 46 in each cell. On the other hand, if it is a sex cell, the
number of chromosomes is halved (23) after meiosis. By the way, mitosis is the
term for cell division among somatic cells and meiosis is for the sex cells.</span>
