After birth, the pressure in the pulmonary artery decreases greatly. What is the cause of this?

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#Question id: 11974

#Biochemistry

Which of the following changes would be expected to occur with increased binding of a hormone to plasma proteins?

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#Question id: 11977

#Biochemistry

Which of the following would be associated with parallel changes in aldosterone and cortisol secretion?

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#Question id: 12079

#Biochemistry

Which of the following decreases the rate of urinary excretion of calcium ions by the kidney?

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#Question id: 12080

#Biochemistry

A 55-year-old man has developed the syndrome of inappropriate antidiuretic hormone secretion due to carcinoma of the lung. Which of the following physiological responses would be expected?

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#Question id: 12081

#Biochemistry

During pregnancy, the uterine smooth muscle is quiescent. During the 9th month of gestation the uterine muscle becomes progressively more excitable. What factors contribute to the increase in excitability?

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#Question id: 12082

#Biochemistry

 A 20-year-old woman is not having menstrual cycles. Her plasma progesterone concentration is found to be minimal. What is the explanation for the low level of progesterone?