Answer:
Intrinsic conduction system of the heart consists of the passage of the electrical impulse from the atrial node to the purkinje fiber system, to produce ventricular contraction.
Explanation:
The heart's electrical conduction system allows the heart to fulfill its blood-pumping functions through the alternating movements of contraction and relaxation of its musculature.
- The nerve impulse begins in the sinoatrial node (SA), located at the top of the right atrium. This produces the atrial contraction to pass the blood from the atria to the ventricles.
- From the SA, the impulse travels to the atrial-ventricular node (AV), located in the interventricular septum.
- In AV, the impulse is briefly delayed and then transmitted to the His bundle (HB), until the HB splits into a right and a left branch. The left branch is divided into three fascicles: anterior, middle and posterior.
- Finally, from each branch and its fascicles originate the Purkinje fibers, which are introduced into the heart muscle and produce - when the nerve impulse arrives - the contraction of both ventricles, and the exit of blood from their cavities.
This series of steps is responsible for the heart being able to pump blood throughout the body.
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The nurse should respond that a CVS and amniocentesis are two different tests. However, they are similar in nature.
Further Explanation:
The Chorionic villus sampling or CVS is a test performed on pregnant women when they are around 11-13 weeks pregnant. This test is not painful but is described as being uncomfortable. This test can cause a miscarriage within 2 days of the procedure but there have been cases where the miscarriage occurs up to two after procedure. This procedure checks for several abnormalities in the fetus such as;
- Down Syndrome
- Cystic Fibrosis
- Muscular Dystrophy
- Sex of baby
An amniocentesis is done later in the pregnancy usually after 15 weeks. This test is performed by putting a needle in the stomach and getting a sample of fluids to be tested for abnormalities in the fetus also. This test is considered to be 99% correct and the CVS is considered to be 98% correct.
Learn more about amniocentesis at brainly.com/question/1266693
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<span>Smoke alarms being only necessary in the work place is false. Public places such as restrooms, airplanes, theaters, malls and even doctor's offices have smoke alarms. These places may be a workplace to some but they are also capable of being occupied by the public as well.</span>
