27. Blood calcium levels are controlled by hormones from which structu
A. Adrenal cortex and the hypothalamus
B. Anterior lobe of the pituitary gland and the thyroid gland.
C. Parathyroid glands and the anterior lobe of the pituitary gland
D. Parathyroid glands and the thyroid gland
28. Where are all of the glomeruli of the kidney located in the?
A. Columns
B. Cortex
C. Medulla
D. Pyramids
29. What structure does the blood from the afferent arteriole enter the?
A. Bowman's capsule
B. Glomerulus
C. Peritubular capillaries
D. Vasa recta
30. Which part of the nephron is impermeable to water?
A. Ascending limb of the loop of Henle
B. Descending limb of the loop of Henle
C. Distal convoluted tubule in the presence of ADH
D. Proximal convoluted tubule
31. Which material is actively reabsorbed from the filtrate in the kidney tu
A. Cl-
B. H20
C. HCO3-
D. Na+
32. Which material is secreted into the filtrate in the kidney tubule?
A. Albumin.
B. H2O
C. Na+
D. Urea
33. Which one of the following is NOT produced by the kidneys?
A. Aldosterone
B. Calcitriol
C. Erythropoietin
D. Renin



Answer :

27. Blood calcium levels are controlled by hormones from which structure? C. Parathyroid glands and the anterior lobe of the pituitary gland. 28. Where are all of the glomeruli of the kidney located? B. Cortex 29. What structure does the blood from the afferent arteriole enter? B. Glomerulus 30. Which part of the nephron is impermeable to water? A. Ascending limb of the loop of Henle 31. Which material is actively reabsorbed from the filtrate in the kidney tubule? D. Na+ 32. Which material is secreted into the filtrate in the kidney tubule? D. Urea 33. Which one of the following is NOT produced by the kidneys? A. Aldosterone