Answer:
The answer to the question: Name the phase when the atrioventricular valves and the semilunar valves are all closed during ventricular diastole, would be: the isovolumic, or isovolumetric relaxation.
Explanation:
The systolic and diastolic cycles of the heart ensure that blood is always being circulated around the body from the heart, and from the body to the heart. While systole implies the moments of contraction and active motion of the heart muscles to ensure the correct passage of blood from the four chambers of the heart (atria and ventricles), to and from the body, diastole is the time when either the atria, or ventricles relax to allow the flow of blood into them. To also ensure this process is seamless, there are a series of valves, the atrioventricular valves, or AV valves, and the aortic and pulmonary (semilunar) valves, that will ensure that blood can flow from the atria to the ventricles (AV valves) without flowing back, and that blood will flow towards the body through the aorta, and the lungs, through the pulmonary arteries, through the aortic and semilunar valves, without going back into the ventricles. At one point, when the ventricular diastole begins, there is an early stage known as the isovolumic, or isovolumetric stage, meaning, volumes are pressures are equalized and then both the AV valves and aortic and pulmonary valves are closed only for a bit as the ventricles relax. Not soon later, the AV valves will start opening to allow the gentle flow of blood from the atria, to the ventricles, before actively initiating atrial systole.
B. the liver. Hope that helps!
Answer:
1. biomedical equipment technician.
2. biomedical engineer.
3. blood and urine analysis equipment.
Explanation:
1. If a doctor needs help using a medical imaging machine, a biomedical equipment technician might be called to assist the doctor.
2. If a manufacturing company wants to develop a new biomedical machine, they might call on a biomedical engineer to help design and develop the product.
3. If you get a certification as a laboratory equipment specialist, you will specialize in the use of blood and urine analysis equipment.
The right answer is True
Reason:
AV nodal block (also known as "heart block"), occurs when conduction between the atria and the ventricles is impaired due to damage of the specialized conducting tissue.