Advertisements
Advertisements
Question
With regards to toxicity and the need for dilution in water, how different are ureotelic and uricotelic excretions? Give examples of animals that use these types of excretion?
Advertisements
Solution
Ureotelic animals excrete urea with minimum loss of water, e.g., Mammals and terrestrial amphibians. Uricotelic animals excrete uric acid with the least loss of water, e.g., Birds and reptiles.
RELATED QUESTIONS
Define the Glomerular Filtration Rate (GFR).
Explain the autoregulatory mechanism of GFR.
Explain the process of formation of urine with suitable diagram
Answer the following in detail.
Explain the structure of a nephron with the help of a diagram.
Explain the terms ultrafiltration and selective absorption
Give Reasons for the following:
As a result of ultrafiltration along with excretory products certain useful products like glucose, salt, etc. are also filtered but these are not excreted?
Multiple Choice Question: Ultrafiltration occurs in:
Choose the correct option.
Tubular secretion does not take place in ______.
Answer the following question.
Effective filtration pressure was calculated to be 20 mmHg; where glomerular hydrostatic pressure was 70 mm of Hg. Which other pressure is affecting the filtration process? How much is it?
When a molecule or ion is reabsorbed from the lumen of the nephron, where does it go? If a solute is filtered and not reabsorbed from the tubule, where does it go?
What solute is normally present in the body to estimate GFR in humans?
If the afferent arteriole of the nephron constricts, what happens to the GFR in that nephron? If the efferent arteriole constricts what happens to the GFR in that nephron? Assume that no auto regulation takes place.
If Henle’s loop were absent from mammalian nephron, which one of the following is to be expected?
Identify the biological term
Carry urine from the kidneys to the bladder.
Identify the biological term
Removal of useful substances from glomerular filtrate.
How is urea formed in the human body?
The human kidney is histologically divided into ____________.
Complete the following:
Urinary excretion = Tubular reabsorption + Tubular secretion –
