Biology
Give reason/explain:
We urinate fewer times in summer than in winter and the urine passed is generally thicker.
Answer
During summer when the surrounding temperature is high, we lose a considerable part of water through perspiration (i.e., in the form of sweat, direct evaporation, etc.). This means that the kidneys have to reabsorb more water from the urine. Due to this reason, we urinate fewer times in summer than in winter and the urine passed is generally thicker.
Related Questions
Give reason/explain:
Excretion is a necessary process of our body.
Give reason/explain:
Why does the cortex of kidneys shows a 'dotted' appearance?
Give reason/explain:
Why does the medulla of kidneys shows a 'striped' appearance ?
Given below is a simple diagram of the longitudinal section of a human kidney. Study the same and answer the following questions:
(a) Name the part of kidney which is found between medulla and pelvis.
(b) What is the basic structural and functional unit of kidney ?
(c) What is main function of kidney ?
(d) Mention the exact location of kidney.
(e) Write two differences in the composition of blood flowing through blood vessels A and B.
(f) Name the part of kidney which collects urine for the first time from the nephrons.
(g) Define 'Osmoregulation'.
(h) Name the technique which is normally suggested by the doctors to the patients in case of a permanent damage to both the kidneys.
(i) Name the hormone which is associated with the 'reabsorption' step of urine production.
(j) Draw a neat and labelled diagram of a malpighian capsule.