Health Assessment of Patients Quiz

C: Steroids are lipid soluble so diffuse through the plasma membrane to bind to a receptor within the cell.

C: The acini cells produce digestive enzymes.

A: Thyroid hormones T3 and T4 contain three and four iodine atoms, respectively.

C: Thyroxine (or tetraiodothyronine) is converted to triiodothyronine in_x000D_target tissues.

B: Aldosterone causes reclamation of sodium ions from the filtrate and potassium to be secreted in exchange.

As steroid hormones are lipid soluble, their receptors are inside the cell as they can cross the plasma membrane.

C: As aldosterone is concerned with the absorption of sodium ions, a_x000d_“mineral”, and aldosterone is produced by the adrenal cortex; it is termed a mineralocorticoid.

C: The hypothalamus produces peptide hormones.

B: Parafollicular (or “C”) cells of the thyroid produce calcitonin which aids in lowering of blood calcium.

D: Endocrine glands secrete “circulating” hormones, that is, they are secreted into the blood.

C: The hypothalamus controls the secretion of the anterior pituitary by the use of “releasing hormones” and “inhibitory hormones”.

D: Aldosterone promotes the absorption of sodium from the filtrate, while potassium (also a positively charged ion) is secreted to maintain electrical neutrality.

D: Hypothalamus secretes regulatory hormones that control endocrine cells in the anterior pituitary gland, produces ADH and oxytocin and contains “autonomic centres” that exert neural control over endocrine cells of the adrenal medullae.

C: PTH causes increased calcium absorption and hence increases blood calcium level.

B: The anterior pituitary produces and releases six hormones.

D: The pituitary gland releases peptide hormones which are soluble in blood. The other choices refer to steroid hormones which are insoluble in blood. They require transport via plasma proteins.