Answer:
The answer to the question: The movement of ions through their channels require a discharge of the capacitance, is, true.
Explanation:
In order for cells, muscular and neuronal, to perform their activities, they need to generate action potentials, that will permit these activities. In order for an action potential to happen, a cell´s membrance must be charged, or rather, its polarity must be changed, so that the cell can be charged and then fire. Usually, cells remain in a resting membrane state, in which, the extracellular matrix remains positive, while the intracellular space remains positive, due to ion, and anion presence in either. In order for the action potential to happen, these polarities are reversed through a series of steps in which ions, particularly potassium and sodium, sometimes calcium, will enter and exit the cell´s membrane to change this polarity. But in order for this process to take place, first a current, or stimulation, must motivate the cell to start the process. The capacitance is the capability of a cell to be ready to be activated or de-activated when stimulated, meaning, to be charged and discharged, when necessary. In order for this capacitance to permit the process of action potential formation, it needs to be discharged first, and this is done through the stimulus, which orders the cell´s membrane to initiate depolarization by opening up the ion channels. This is why the answer is true.
Answer: A and D
Explanation: In old age, dehydration and compression of the disc between the vertebrae in the spine causes reduction in height. The loss of bone density (osteoporosis) can also make the spine to become more curved, and make the vertebrae to collapse due to thinning that is caused by overall decrease in body water. This can be the reason for the reduction in height of the patient.
Answer:
The best answer to the question: A nurse is monitoring the laboratory values of a client who is receiving heparin. Which of the following values should a nurse report to the provider? would be: D: aPTT of 50 seconds.
Explanation:
Unlike Warfarin and the low-molecular weight heparin, medically speaking, the one diagnostic test that is still being used as a measure of heparin´s therapeutic achievements in a patient with a coagulopathy, is the activated partial thromboplastin time aPTT. Although the measurement in seconds, will depend on the laboratory that is doing the measuring, and despite scientific evidence that points to the fact that aPTT is not the most accurate of laboratory measurements for a patient with heparin, it is still being used today and still is the leading laboratory test for these types of patients.
The endotracheal tube of 2.5mm can be used to intubate a newborn with an estimated gestational age of 26 weeks.
<h3>What is an endotracheal tube?</h3>
Tube constructed of polyvinyl chloride, placed between the vocal cords through the trachea is referred to as endotracheal tube.
It aids to give oxygen and gases to the lungs and protects it from contamination, such as gastric contents or blood.
Typically, the endotracheal tube of 2.5mm can be used to intubate a newborn with an estimated gestational age of 26 weeks.
Thus, the size of the tube should be of 2.5mm diameter.
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Answer:
Adequate Intakes (AI)
Explanation:
Adequate Intake (AI) is the recommended average daily intake level based on observed or experimentally determined approximations or estimates of nutrient intake by a group (or groups) of apparently healthy people that are assumed to be adequate used when an RDA cannot be determined.
