CBSE Class 10 Answered
How is cold formed? Why do our nose get blocked when we get cold?
Asked by Lakshyajeet Gogoi | 23 Feb, 2012, 04:00: PM
Expert Answer
Rhinovirus infects only a small proportion of the cells lining the nose. Inflammatory mediators cause dilatation and leakage of blood vessels and mucus gland secretion. They also activate sneeze and cough reflexes and stimulate pain nerve fibers.
When the tissues in the membrane become swollen, it blocks the normal passage of fluid through your nasal pathways.
Answered by Meghna Thapar | 24 Feb, 2012, 12:14: PM
Application Videos
-
Absorption in small intestine
This video explains why absorption of food occurs in the small intestine. -
Opening and closing of stomata
This video explains how guard cells regulate the opening and closing of sto... -
Exchange of gases in Amoeba
This video details the process of exchange of gases in Amoeba. -
Exchange of gases in fishes
This video details the process of exchange of gases in fishes. -
Arteries and Veins
This video explains the difference between arteries and veins.
Concept Videos
-
Respiration in Organisms
Learn the mechanism of breathing and various organs of respiratory system.... -
Transport in Organisms
Explain the need for transportation system. Function of the vascular tissu... -
Blood
This video explains the components of blood, blood vessels and the concept ... -
Autotrophic Nutrition - Part 1
This video explains the types of nutrition, photosynthesis in plants and th... -
Respiration in Organisms
Learn the mechanism of breathing and various organs of respiratory system....
CBSE 10 - Biology
Asked by kunchalasrinivasaraosrinivasar | 23 Apr, 2024, 07:40: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by bgmigaurav7318 | 08 Apr, 2024, 01:46: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by jayeshsah1995 | 04 Mar, 2024, 12:01: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by nsubhashree54 | 24 Feb, 2024, 11:08: AM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by sarmabankupalli9 | 02 Jan, 2024, 08:19: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by pavanimullu123 | 26 Dec, 2023, 07:17: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by jitendranathsingh331 | 26 Nov, 2023, 06:17: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by waccstudies123 | 08 Oct, 2023, 02:10: AM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by 09.10bjanvhijadhav | 16 Sep, 2023, 11:58: PM
ANSWERED BY EXPERTCBSE 10 - Biology
Asked by devy64469 | 03 Sep, 2023, 09:25: PM
ANSWERED BY EXPERT
