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प्रश्न
The excretory unit in the human excretory system is called:
विकल्प
nephron
neuron
nephridia
kidney
उत्तर
nephron
Explanation:
The main excretory unit in the human excretory system is called nephron. It produces urine and maintains the homeostasis of the body.
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संबंधित प्रश्न
State the exact location of the Loop of Henle.
Name the basic filtration unit present in the kidney.
What gaseous waste products are excreted by plants?
A dialysis machine contains long tubes coiled in a tank containing dialysing solution Of what substance are the tubes made?
What are the methods used by plants to get rid of their waste products?
The organs A of a person have been damaged completely due to which too much of a poisonous waste material B has started accumulating in his blood, making it dirty. In order to save this person's life, the blood from an artery in the person's arm is made to flow into long tubes made of substance E which are kept in coiled form in a tank containing solution F. This solution contains three materials G, H and I in similar proportions to those in normal blood. As the person's blood passes through long tubes of substance E, most of the wastes present in it go into solution. The clean blood is then put back into a vein in the arm of the person for circulation.
(a) What are organs A?
(b) Name the waste substance B.
(c) What are (i) E, and (ii) F?
(d) Name G, H and I.
(e) What is the process described above known as?
Tick the most appropriate answer.
The process of removing waste from the body is called
Answer the following in short.
What is excretion?
Why is it necessary to maintain a normal osmotic concentration of the blood?
Given below is a simplified diagram of the human kidney cut open longitudinally. Answer the questions that follow.
 |
- Define excretion.
- Why does the cortex of the kidney show a dotted appearance?
- Why does the medulla of the kidney show a striped appearance?
- Write two differences in the composition of the blood flowing through the blood vessels 'A' and 'B'.
Explain in your own words with suitable examples.
How does excretion occur in human beings?
Look at the figure given below. It is a section of human kidney as seen from the front.
Which area/part (give its name and number given on the diagram) which contains the following:
(i) Malpighian capsule
(ii) The pyramids
(iii) Freshly collected urine
Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:
Name the functional units of the kidneys.
Describe in brief how urine is produced in the human body.
Give Technical Term:
The organ which filters out urea and uric acid from the bloodstream.
Give Technical Term:
The organ in man concerned with maintaining water balance in the body.
Write the functional activity of the following structure: Henle’s loop
Write the functional activity of the following structure: Renal artery
Answer the following question.
Amphibian tadpole can afford to be ammonotelic. Justify.
Adult frog is an amphibian, its mode of excretion is ______.
