The substance which is not reabsorbed into the blood capillaries surrounding the tuble of a nephron is mainly:
(a) glucose
(b) amino acid
(c) urea
(d) water

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Solution

(c) urea
Urea is not reabsorbed into the blood capillaries that surround the tubule of a nephron. However, glucose, amino acid and water are reabsorbed.

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Similar questions

Q. The substance which is not reabsorbed into the blood capillaries surrounding the tubule of a nephron is mainly:
(a) glucose
(b) amino acid
(c) urea
(d) water

Q. Which among the following are reabsorbed actively?
Glucose, amino acids, water, nitrogenous waste,

N a^{+}

Q. Very short answer type.
Glomerular filtrate has water, glucose, amino acids and creatinine. Which of them are rapidly reabsorbed actively by blood?

The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.

Parts indicated by the guidelines 1 to 8 are as follows :

1. Afferent arteriole from the renal artery;

2. Efferent arteriole

3. Bowman's capsule,

4. Glomerulus ;

5. Proximal convoluted tubule with blood capillaries;

6. Distal convoluted tubule with blood capillaries;

7. Collecting tubule;

8. U-shaped loop of Henle.

Study the diagram and answer the questions that follow;

(a) Where does ultrafiltration take place?

(b) Which structure contains the lowest concentration of urea?

(d) Which structure (normally) contains the lowest concentration of glucose?

(e) Where is most water reabsorbed?

$\begin{matrix} S u b s t a n c e & A m o u n t I n i t i a l l y f i l t e r e d o u t o f b l o o d s t r e a m & A m o u n t r e t u r n e d t o b l o o d s t r e a m W a t e r & 100 L & 99 L G l u c o s e & 370 g & 364 g U r e a & 30 g & 10 g \end{matrix}$

Calculate the percentage of each substance absorbed into the blood.

Percent absorbed by blood = $\frac{A m o u n t r e t u r n e d t o b l o o d s t r e a m \times 100}{A m o u n t i n i t i a l l y f i l t e r e d o u t}$

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The substance which is not reabsorbed into the blood capillaries surrounding the tuble of a nephron is mainly: (a) glucose (b) amino acid (c) urea (d) water

(c) ureaUrea is not reabsorbed into the blood capillaries that surround the tubule of a nephron. However, glucose, amino acid and water are reabsorbed.

The substance which is not reabsorbed into the blood capillaries surrounding the tuble of a nephron is mainly:
(a) glucose
(b) amino acid
(c) urea
(d) water

(c) urea
Urea is not reabsorbed into the blood capillaries that surround the tubule of a nephron. However, glucose, amino acid and water are reabsorbed.