Download App

Excretory Products and their Elimination — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYExcretory Products and their Elimination3 Marks
Question
Explain micturition.
✓

Answer

The process of passing out urine from the urinary bladder is called micturition. Urine formed by the nephrons is ultimately carried to the urinary bladder where it is stored. This causes stretching of the wall of bladder that leads to the stimulation of stretch receptors on the walls of the bladder. This sends signal to the CNS. The CNS passes on motor messages to initiate the contraction of smooth muscles of the bladder and simultaneous relaxation of the urethral sphincter causing the release of urine.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from Excretory Products and their Elimination→Excretory Products and their Elimination — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Briefly describe the following:
Heart failure.
→
What are the modifications that are observed in birds that help them fly?
→
Radha's father who is a diabetic patient does not avoid food items doctor has told him in diet. He also feels lazy to go for a walk. One day, his glucose level was checked by his doctor. The doctor advised him to take injections regularly, as he was not able to control his diabetes with diet and medication. He came home and while telling the things to Radha's mother, Radha (biology student) heard them and interrupted in between. She explained that, doctor has given insulin injections to control his blood glucose level. This may be discontinued, if he will take precautions in his daily routine.
  1. Which endocrine gland and its part is involved in the secretion of inslin?
  2. Why doctor preferred him to take insulin injections and what is the role of insulin in controlling level of glucose in blood?
  3. What precaution he should take to protect himself from such disorder?
  4. What are the values reflected from Radha's character as a biology student and a daughter?
→
  1. Define vernalisation.
  2. What are short-day plants?
  3. Name the plant growth regulator, which is snythesised by ripening fruits.
→
What is the difference between direct and indirect development?
→
Why does atrial systole always precede ventricular systole?
→
Write the characteristics of heartwood and sapwood.
→
What is the difference between lymph and blood?
→
Distinguish between blind spot and yellow spot.
→
Define placentation. Write any three differences between axile placentation and parietal placentation
→