Question

The given diagram represents a nephron and its blood supply. Study the diagram and answer the ahead 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 tubule

(2) Distal convoluted tubule

(3) Loop of Henle.

(4) Bowman capsule.

(ii) The afferent arteri ole entering the Bowman capsule is wider than the efferent arteriole which leaves it. So more blood is entering and less blood is moving out of the glomerulus.

(iii) Renal venuole.

(iv) Ultrafilteration and Reabsorption.

(v) Loop of Henle.