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Q: Leukotrienes from damaged tissue cause smooth muscle in local blood vessels to vasodilate (increase…
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Name four hormones that cause vasodilation or vasoconstriction of
arterioles, and specify their effects?
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- Leukotrienes from damaged tissue cause smooth muscle in local blood vessels to vasodilate (increase the diameter of the vessel lumen). Is this an example of (a) autocrine stimulation or (b) paracrine stimulation? Explain.Answer both questions, they follow each other 1a)Which of the following is a function of the smooth muscle layer of arterioles during the transition to exercise because of the binding of the hormone epinephrine to a beta-adrenergic receptor? Group of answer choices a)Increase MAP as a response in a negative feedback arc b)Increase the distribution of blood to skeletal muscles during exercise c)Increase TPR d)Increased cardiac output e)Decreased heart rate 1b) Which of the following is a mechanism largely responsible for distributing more blood to Jose's skeletal muscles? Group of answer choices a)Decreased sympathetic stimulation of arteriolar smooth muscles b)Increased parasympathetic stimulation of arteriolar smooth muscles c)Autoflow regulation d)Active hyperemiaWhich of the following is true regarding plasma colloid osmotic pressure ? 1) It is less than interstitial osmotic pressure 2) It decreases by significantly in the muscle capillaries as blood flows from the arteriole end to the venous end 3) It is primarily caused by the presence of the substances in the plasma such as sodium and potassium 4) It increases in response to an increase in plasma fibrinogen concentration asap please
- Mrs. Scrolls is admitted to the coronary care unit with an anterior-wall myocardial infarction due to an obstruction in the left anterior descending and circumflex artery. Her temperature is now 38.1°C. She is diaphoretic and also feels lethargic. What are the physiological mechanisms behind Mrs. Scrolls’ signs and symptoms?What are the major compensatory responses to blood loss and which hormones are involved. Describe the process of autoregulation in order to insure supply to vitally important organs (brains, kidneys, heart, and etc.)Predict the effect of each of the following conditions on blood flow:(a) vasoconstriction of blood vessels in the skin in response to coldexposure, (b) vasodilation of blood vessels in the skin in response toelevated body temperature, and (c) erythrocytosis, which results in agreatly increased hematocrit.
- A 29-year-old female develops sepsis and, as a consequence, she experiences profound vasodilation. a) What effect does vasodilation have on the afterload? Explain why. b) What effect does vasodilation have on blood pressure? Explain why. How will her body try to bring her blood pressure back to homeostasis?Explain why orthostatic (postural) hypotension may occurwith vasodilator drugs.Explain the physiologic significance of the syncytiotrophoblast’s production of hCG.
- Answer ALL parts of this question. In terms of heart failure there is a decrease in cardiac output. This is due to a contractile deficit in the individual cardiac myocytes. (a) Explain how this contractile deficit occurs. (b) What common cardiac problem is often associated with the changes in calcium handling often seen in cardiac cells of heart failure patients? Explain how this problem arises. (c) Describe the mechanism of action of levosimendan in the treatment of heart failure.Upon the sensing of a slowing of NaCl flow in the ascending loop of Henle/DCT, what primary action does the macula densa take to combat these perceived drop in blood volume/pressure?A 29-year-old female develops sepsis and, as a consequence, she experiences profound vasodilation. a) What effect does vasodilation have on the afterload? Explain why. b) What effect does vasodilation have on blood pressure? Explain why. How will her body try to bring her blood pressure back to homeostasis Be detailed in your explanation and support your answer with facts from your textbook, research, and articles from scholarly journals. In addition, remember to add references in APA format to your posts to avoid plagiarism.
