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.
Drew read an article about the dash eating plan. She learned that dash eating pattern is high in <u>vegetables</u> but low in <u>whole fat dairy.</u>
- DASH stands for Dietary Approaches to Stop Hypertension. The DASH diet is a healthy eating plan designed to help treat or prevent high blood pressure (hypertension).
- The DASH diet includes foods that are high in potassium, calcium, and magnesium.
- These nutrients help control blood pressure. Dietary restrictions apply to foods high in salt, saturated fat, and added sugars.
- The DASH diet offers a variety of low-fat dairy products, vegetables, fruits, and nutritious grains in addition to fish, chicken, and nuts.
- It offers a limited variety of sweets, red meats, and sweet beverages.
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The thalamus is the brain region from which all the somatosensory input passes by the synapses to the cerebrum.
The brain is a central nervous system of all humans, which controls all voluntary and involuntary actions. It has three major parts- Forebrain( Prosencephalon), Midbrain( Mesencephalon), and Hindbrain( rhombencephalon). The forebrain is the largest part of the brain having two parts cerebrum and the diencephalon.
The thalamus is the part of the diencephalon, which performs the somatosensory function by transmitting all the sensory information by the impulses from the various receptors present in the body to the cerebral cortex.
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Answer:
Based on Murchison’s research and presentation, I agree with the definition of cancer as a “strange, short-lived, self-destructive life form; an evolutionary dead end”.
Explanation:
I agree with Murchison's definition because of the nature of cancer to branch and diversify in the process of changing or evolving; this makes it strange, and from the information revealed by Murchison’s study on the Tasmanian devil—which is an animal that has a pouch like a kangaroo, and whose specie has been undergoing extinction as a result of cancer—cancer is contagious; meaning that it is easily transmitted. As a result of the evolving, contagious and destructive nature of cancer, coupled with the fact that people struggle with it and die, and it has been making a whole specie (Tasmanian devil) to undergo extinction, I agree with Murchison’s definition of cancer as a “strange, short-lived, self-destructive life form; an evolutionary dead end”.