You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Angiotensin II Causes- and explain in detail?
Ans. is 'a' i.e., Vasoconstriction Actions of angiotensin 11 (A-II)o The most prominent action of A-II is vasoconstriction.o Angiotensin II is one of the most potent vasoconstrictors known, being four to eight times as active as epinephrine.o Vasoconstriction involves arterioles and venules and occurs in all vascular beds. However, it is less marked in cerebral, skeletal muscle, pulmonary and coronary vessels.o A-II increases the force of myocardial contraction by promoting Ca+2 influx.o A-II and A-II I are tropic to zona glomerulosa of adrenal cortex -| aldosterone secretion - Na+ & water retention.o A-II also has a direct action on kidney - promotes Na+, C1- and HCO2- reabsorption.o In brain, A II induces drinking behavior and ADH release. It also increases central sympathetic outflow.o A-II enhances sympethetic activity by peripheral action as well - It releases Adr from adrenal medulla, stimulates autonomic ganglia and increases the output of NA from adrenergic nerve endings.