Sujay is conducting a research on a group of factory machinists as part of a study on workplace stress and heart disease. Before conducting his study, he explains the objective of the study to the subjects and tells them what they would need to do. He gives them the opportunity to choose if they want to participate or not. In other words, Sujay is seeking .

Informed consent

Explanation:

Informed consent is a permission that is granted in full knowledge of the possible consequences usually given to a doctor by a patient with knowledge of the possible risks and benefits on the procedure the doctor wants to carry out on the patients. In this case, Sujay seeks informed consent by telling them what they would need to do and giving them the opportunity to choose if they want to participate or not participate.

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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he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?