Elevated Na in the diet is thought to cause pathologies due Direct organ stress and elevated blood pressure Direct organ stress Elevated blood pressure Direct effects of hypothalamic regulation, and elevated blood pressure
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- The following events occur when the body loses water by sweating.I - Hypothalamus stimulates the posterior pituitary glandII - Osmotic pressure of blood stabilizesIII - ADH causes kidneys to reabsorb more waterIV - Osmotic pressure of blood increases In what order do these events occur?Which symptoms would you expect to see in a person who was unable to make enough aldosterone? high blood pressure low blood K+ high blood pressure and high blood Na+ low blood pressure and high blood K+Which of these associations is mismatched?a. atrial natriuretic hormone (ANH)—secreted by the heartb. renin—secreted by the anterior pituitaryc. aldosterone—secreted by the adrenal cortexd. antidiuretic hormone (ADH)—secreted by the posterior pituitary
- _____________ in the hypothalamus monitor blood Na+ and when necessary trigger vasopressin secretion.When experiencing stress, the effects of the epinephrine circulating in the body will result in a. bradycardiab. decreased heart contractilityc. increased skeletal muscle blood supplyd. hyperglycemiaAldosterone secretion is regulated by: A. renin secretion by the kidney resulting in the formation of angiotensin II that directly causes aldosterone release B. direct humoral stimulation of adrenal cortex cells by potassium ions C. ACTH during conditions of severe stress D. Atrial natriuretic pepside causing inhibition of aldosterone effects E. All of these are correct
- Da explain the role of cortisol in the maintaining blood glucose level in the form of flow chart?Secretion of the hormone ADH may decrease or stop if the pituitary’s posterior lobe is damaged, as by a blow to the head. This is one cause of diabetes insipidus. People with this form of diabetes excrete so much dilute urine that they may become seriously dehydrated. Where are the target cells of ADH?A tumor increases the secretion of GHRH. Predict the affects this tumor will have. How would this differ in adults versus children? A. short term effect of GH. B. Long tern effects of GH
- Although orthostatic hypotension has many causes, in the elderlyit can be due to age-related decreases in neural and cardiovascular responses. Decreased fluid intake while feeling ill and sweating due to a fever can result in dehydration. Dehydration candecrease blood volume and lower blood pressure, increasing thelikelihood of orthostatic hypotension.a. Describe the normal response to a decrease in blood pressureon standing.b. What happened to Molly’s heart rate just before she fainted?Why did Molly faint?c. How did Molly’s fainting and falling to the floor help establishhomeostasis (assuming she was not injured)?When blood pressure fluctuates within normal homeostatic range, a.GFR increases to compensate for increases in blood pressure b. GFR remains constant due to auto regulation c. GFR decreases to compensate for increases and blood pressureCalcitonin reduces Ca+ from the blood