* not completed

. Which of the following statements regarding the adrenal cortex are correct?

The adrenal cortex secretes both peptide and steroid hormones correct incorrect

The adrenal cortex will atrophy following removal of the anterior pituitary gland correct incorrect

Aldosterone plays a role in the regulation of plasma calcium correct incorrect

The secretion of cortisol peaks at around 6 a.m. each day correct incorrect

Cortisol is a hyperglycaemic hormone correct incorrect

* not completed

. The adrenal cortex consists of four morphologically distinct zones of cells.

True correct incorrect

False correct incorrect

* not completed

. The cells of the various zones of the adrenal cortex secrete different steroid hormones

True correct incorrect

False correct incorrect

* not completed

. Which of the following statements regarding the adrenal medulla are correct?

Chromaffin cells are found in the adrenal medulla correct incorrect

Excess secretion of catecholamines will lead to hypertension. correct incorrect

The heart rate is reduced by circulating adrenaline and noradrenaline. correct incorrect

Increased catecholamine secretion stimulates lipolysis. correct incorrect

* not completed

. A middle aged man is experiencing recurrent headaches and occasional palpitations. He reports that he has bouts of anxiety and has lost 6 kg body weight in the last few months. His blood pressure is 185/110 mm Hg with a heart rate of 65 b.p.m. Which of the conditions listed below is the most likely cause of his distress?

Cushing's syndrome correct incorrect

Excess secretion of growth hormone correct incorrect

phaeochromocytoma correct incorrect

Excess secretion of thyroid hormone correct incorrect

* not completed

. A fifty year old woman has experienced a number of fainting episodes including one when she stood up to leave her train. On examination her heart rate was 85 b.p.m. and her blood pressure was 120/75 mm Hg when lying down but 85/60 mm Hg when standing. A blood test showed that her plasma sodium and potassium were 125 mmol l^-1 and 6 mmol l^-1. Which of the following endocrine disorders might account for her symptoms?

Addison's disease correct incorrect

Cushing's syndrome correct incorrect

Conn's syndrome correct incorrect

Excess secretion of adrenaline correct incorrect