Which of the following is a protein that forms during the final stages of the clotting process?

Platelet

Erythrocyte

Fibrin

Coagulin

Fibrin.

Explanation:

Blood clotting refers to a process where clump of blood transform from liquid to gel like, thereby forming clot. These occur when there is cessation of blood loss due to damaged vessels.

When a blood vessel is damaged, it is exposed to some factors which lead to platelet plug formation. The platelet seal together to form a cover on the damaged vessels.

Coagulation occurs where fibrin form a mesh that collect the platelet, blood cells and plasma. The fibrin mesh contract and drain out the fluid content.

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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when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave