Question

The given diagram represents a nephron. and its bind supply. Study the diagram and answer the following questions
(i) Label parts 1, 2, 3 and 4.
(ii) State the reason for the high hydrostatic pressure in the glomerulus.
(iii) Name the blood vessel which contains the least amount of urea in this diagram.
(iv) Name the two main stages of urine formation.
(v) Name the part of the nephron which lies in the renal medulla.

Answer 1

(i) 1. Collecting duct. 2. Distal convoluted tubule. 3. A loop of Henle. 4. Bowman's capsule.

(ii) The high hydrostatic pressure in the glomerulus is caused by reduced diameter of capillaries of afferent arteriole.

(iii) Efferent arteriole contains the nonfilterable components of blood and the least amount of urea

(iv) 1. Ultrafiltration. 2. Selective Reabsorption.

(v) A loop of Henle.