Questions: A renal corpuscle is a ?, whereas a renal tubule is a ?. A special blood cell in the kidneys; tubule that leads from the kidneys to the bladder (B) glandular structure that regulates blood pressure; blood vessel that regulates the flow of blood into the glomerulus (C) storage area for urine; tubule that carries urine from the urinary bladder outside (D) structure composed of connective tissue; blood vessel (E) cluster of blood capillaries and glomerular capsule; highly coiled tubule exiting the glomerular capsule

The answer is (E): cluster of blood capillaries and glomerular capsule; highly coiled tubule exiting the glomerular capsule.

Explanation for each option:

(A) A special blood cell in the kidneys; tubule that leads from the kidneys to the bladder

• Incorrect. A renal corpuscle is not a blood cell; it is a structure composed of the glomerulus and Bowman's capsule. The renal tubule does not lead directly from the kidneys to the bladder; it processes filtrate into urine.

(B) Glandular structure that regulates blood pressure; blood vessel that regulates the flow of blood into the glomerulus

• Incorrect. While the kidneys do have structures that help regulate blood pressure, the renal corpuscle itself is not a glandular structure. The renal tubule is not a blood vessel.

(C) Storage area for urine; tubule that carries urine from the urinary bladder outside

• Incorrect. The renal corpuscle is not a storage area for urine; it is involved in the filtration of blood. The renal tubule processes filtrate into urine, but it does not carry urine from the bladder outside.

(D) Structure composed of connective tissue; blood vessel

• Incorrect. The renal corpuscle is not primarily composed of connective tissue; it consists of the glomerulus and Bowman's capsule. The renal tubule is not a blood vessel.

(E) Cluster of blood capillaries and glomerular capsule; highly coiled tubule exiting the glomerular capsule

• Correct. The renal corpuscle consists of the glomerulus (a cluster of blood capillaries) and the glomerular (Bowman's) capsule. The renal tubule is a highly coiled structure that exits the glomerular capsule and processes the filtrate.