Define Respiration:( Cellular Respiration) in Biology

Updated on Jan. 8, 2021 03:23 PM IST by Lakshmi Arya

Respiration:( Cellular Respiration)

The sum total of physical and chemical processes by which oxygen and carbohydrates (main food nutrient) etc. are assimilated into the system and the oxidation products like carbon dioxide and water are given off.

Breathing:( External Respiration):- 
The process of exchange of oxygen from the atmosphere with carbon dioxide produced by the cell  is known as breathing.

Respiratory Tract:-
A pair of external nostrils---->nasal chamber through nasalpassage---->pharynx--->glottis---->larynx--->trachea--->left and right primary bronchi--->secondary and tertiary bronchi----->brinchioles---> vascularised bag like structures (alveoli)or air sacs.

Lung is the respiratory organ in terrestrial organisms from where exchange of gases take place.
Each lung is covered with double layered membrane known as pleura with pleural fluid between them.

Respiratory organs in animals:-

  1. Protozoans,annelids, frogs : Body surface
Total Views: 475

Related FAQs

Q. What is the function of rings of cartilage ?

Ans: Rings of cartilage are present in the throat. These are also known as tracheal cartilage. These ensured that the air passage does not collapse and support the trachea while still allowing it to move a... read more

Q. How is oxygen transported in large multicellular organisms like humans ?

Ans: In large multicellular organisms like humans, the body size is large, so the diffusion pressure alone cannot take care of oxygen delivery to all parts of the body. In multicellular organisms respirato... read more

Q. Explain the movement of diaphragm during inhalation and exhalation.

Ans: Inhalation is the taking in air rich in oxygen. During inhalation, we lift our ribs and flatten our diaphragm which increase the volume of the thoracic cavity. Because of this, air rushes inside of th... read more

Q. What Are The End Products Of Anaerobic Respiration?

Ans: An Anaerobic Respiration is the form of cellular respiration that occurs when oxygen is absent. The end products of anaerobic respiration are Lactic acid or ethanol and ATP molecules. Anaerobic respir... read more