Advertisements
Advertisements
Question
Name the main nitrogenous waste in the human blood. How is it removed from the blood?
Advertisements
Solution
The main nitrogenous waste in the human blood is urea. The kidneys remove the urea from the blood and excrete them in the form of a dilute solution called urine.
Kidneys are the main excretory organ of the human body. There are millions of nephrons in each kidney. Each nephron contains a renal corpuscle and a renal tubule. The renal corpuscle consists of capillaries called the glomerulus, enclosed by a capsule called Bowman's capsule. The blood is filtered in the glomerulus and the filtrate travels through the renal tubules. Here, the materials needed by the body are reabsorbed, while the wastes (like urea) are collected and excreted in the urine.
APPEARS IN
RELATED QUESTIONS
What are the methods used by plants to get rid of excretory products?
The Biological/technical term for The removal of nitrogenous wastes from the body
With which human organ system (or human systems) is glomerulus associated?
What is the function of excretory system in humans?
Where is urine carried through ureters?
Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form.
Excess sugar in the blood is a symptom of diabetes.
Fill in the blank.
Malpighian body consists of Bowman’s capsule and .....................
Fill in the blank.
.................. produces bile pigments from the heamoglobin of broken RBCs.
Answer the following in short.
List five waste products of plants.
Given below is a set of five terms. Rewrite the terms in their correct order so as to be in logical sequence.
Renal artery, urethra, ureter, kidney, urinary bladder.
Choose the odd one out in the following series:
Proximal convoluted duct, loop of Henle, vein.
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
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from 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 question that follow:
Which structure contains the lowest concentration of urea?
Differentiate between:
Renal cortex and Renal medulla.
Complete the following sentence with appropriate word:
The sum total of all the chemical reactions taking place in the cell is known as ______.
Write the functional activity of the following structure: Vasopressin
Write the functional activity of the following structure: Henle’s loop
Adult frog is an amphibian, its mode of excretion is ______.
Give two examples of the following:
Water-soluble vitamins
Choose the odd one out in the following set and write the category for the remaining terms:
