Answer:
a. in the bottom of the atrium just above the ventricles
Explanation:
AV node -
It helps to control the heart rate , it serves as an electrical relay station , reduces the electrical current which is sent by the SA node .
The location of the AV node , is at the lower back section of the inter atrial septum , and conducts the electrical impulse normally from the atria to ventricles .
Answer: b. The elderly have a higher risk from toxic pesticides because they are less able to eliminate environmental toxins.
Explanation:
The older adults are expected to have health problems after a pesticide exposure. This is because of the fact that their metabolism is slow and the liver and kidneys are not able to remove the pesticides from the body. The liver and kidney may get injured during the exposure of the high doses of pesticides.
The longer a pesticide stay in the body of an old person this may result in more severe injury. As the body is slow in metabolism that is the conversion of the chemicals in the pesticides into less toxic metabolites. Thus the elderly people will not be able to eliminate the toxin from the body. The toxin will damage the vital organs and can lead to death.
P wave is the atria “firing”/depolarizing, the QRS complex is the ventricles depolarizing (and the atria are depolarizing while this happens), and the T wave is the ventricles depolarizing. Depolarizing is when it contracts, and repolarizing is when it relaxes and refills.
Given what we know about rheumatoid arthritis, we can confirm that the nurse can determine that the teaching is effective when the client makes the statement that "<em>Rheumatoid arthri</em><em>tis includes </em><em>joint involvement </em><em>that is usually </em><em>symmetric </em><em>and </em><em>polyarticular</em>".
Arthritis is one of many diseases in the autoimmune category. An autoimmune disease is one in which the immune system of the patient attacks its own cells. <em><u>The reasons behind this remain unknown</u></em>. In the case of Rheumatoid arthritis, the attacks remain isolated to the joints. The immune system causes the joints to be unable to produce synovial liquid, which causes inflamation.
As stated by the patient, Rheumatoid arthritis includes joint involvement that is usually symmetric and polyarticular. What this means is that any diarthrodial joint can be affected by the condition and is usually collateral, meaning that <u>if the left hand is affected, the right hand often is as well.</u>
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