Answer:
The correct answer will be option-A
Explanation:
Electrocardiogram or ECG is the recording and representation of the electrical changes that are taking place during the cardiac cycle.
The QRS complex is preceded by the P wave or atrial systole or atrial depolarization after which the electrical signals are passed on to the AV node.
As soon as the AV node passes the electrical signals to bundle of His, it is observed in as the QRS interval which represents the atrial diastole and the onset of ventricular depolarization.
Thus, option-true is the correct answer.
Answer:
The answer to the question: Electrical impulses or action potentials (AP) cannot propagate across a synaptic cleft. Instead, neurotransmitters are used to communicate at the synapse, and re-restablish the AP in the post-synaptic cell, would be, true.
Explanation:
Essentially, although the CNS, PNS and ANS (Central Nervous System, Peripheral Nervous System and Autonomic Nervous System) are electrical systems, that use the electricity generated through action potentials, that in turn, are created by the exchange of electrically charged ions from within and without the neuronal cells, these electrical impulses do not pass the pre-synaptic, and post-synaptic cleft. Instead, once an AP has reached the terminal end of the pre-synaptic neuron, neurotransmitters are released by this one, into the cleft, which are then taken up by the receptors present in the post-synaptic neuron. Depending on the type of transmitter released, there will be an inhibitory or excitatory effect. Then, with the transmitter attached, the post-synaptic neuron will depolarize and a new AP will be generated in the post-synaptic neuron, which will carry on. Messages, thus are transmitted that way between neurons, and also, between the nervous system and the organs they influence.
Answer:
Him being over assertive. There is no way for the husband to know what ailment the wife is dealing with.
Explanation:
Answer: (A) Hyperal dosteronism
Explanation:
In the case of hyperaldosteronism the levels of secretion of aldosterone increases. This can become responsible for alkolosis and hyperkalemia. High blood pressure, low levels of potassium, headache, muscle weakness, numbness and feeling tired are the symptoms of the hyper dosteronism. Also the increase in the content of sodium and decrease in levels of magnesium causes polyuria and polydipsia without causing polyphagia.
Answer:
The correct answer to the question: Which of the following types of fluoride are typically used in the dental office, would be, D: All of the above.
Explanation:
When going to the dentist, for mouth care, it is normal for these professionals to use certain chemicals to ensure not just the removal of bacteria that can cause caries, but also to ensure the total health of the mouth cavity. According to the American Dental Association, the use of fluoride substances is allowed, but there are only a few choices available. As such, the types allowed are neutral sodium fluorides in foam, gels and varnish, as well as acidulated phosphate, also in gels and foams.
