Table of Contents
What is external respiration?
Definition of external respiration : exchange of gases between the external environment and a distributing system of the animal body (such as the lungs of higher vertebrates or the tracheal tubes of insects) or between the alveoli of the lungs and the blood — compare internal respiration.
What is external respiration answer?
External Respiration. External respiration is the formal term for gas exchange. It describes both the bulk flow of air into and out of the lungs and the transfer of oxygen and carbon dioxide into the bloodstream through diffusion.
Where does external respiration occur quizlet?
External respiration occurs in the alveoli; the pH is higher and the temperature is lower; oxygen diffuses from the alveoli into the blood and carbon dioxide diffuses from the blood to the alveolar space for expiration.
What is external respiration quizlet?
external respiration. the exchange of gases between the air in the alveoli and the blood in the pulmonary capillaries. internal respiration. the exchange of gases between blood and tissue cells in systemic capillaries. oxygen.
How does external respiration occur?
External respiration occurs in the lungs where oxygen diffuses into the blood and carbon dioxide diffuses into the alveolar air. Internal respiration occurs in the metabolizing tissues, where oxygen diffuses out of the blood and carbon dioxide diffuses out of the cells.
What is external respiration Class 10?
External respiration refers to breathing and exchange of gases between the external environment and lungs and between alveoli surface and the blood stream.
What is meant by external respiration and internal respiration?
External respiration, also known as breathing, involves both bringing air into the lungs (inhalation) and releasing air to the atmosphere (exhalation). During internal respiration, oxygen and carbon dioxide are exchanged between the cells and blood vessels.
Which of the following occurs with external respiration?
What is external respiration Class 7?
Breathing or external respiration: This is the process of taking in oxygen-rich air and giving out carbon dioxide-rich air.
What is external respiration Class 9?
What organs are involved in external respiration?
External respiration- exchange of gases between the air and the blood in the lungs…. oxygen diffuses into the blood, carbon dioxide diffuses into the lungs….Upper: Lower:
- Nose (nasal cavity) 1. Lower part of the trachea.
- Pharynx 2. Bronchial tree.
- Larynx 3. Lungs.
- Upper part of trachea.
What is external respiration Class 8?
Hint: External respiration is actually the breathing process, in which oxygen is taken into by inhalation and carbon-dioxide is expelled by exhalation. In this process oxygen is taken from the external environment and carbon dioxide is expelled to the external environment.
What is the difference between internal and external respiration?
Location: External respiration occurs between cells of the body and the external environment while internal respiration occurs within cells.
What are the steps of external respiration?
Thus, external respiration has three steps namely inhalation, exhalation, and relaxation. Inhalation is an active process while exhalation is passive. Furthermore, it involves two stages known as ventilation and gas exchange. Ventilation is the movement of the air in and out of the lungs.
Where does internal and external respiration take place?
Internal respiration takes place in the tissues of the body with the exchange of gases between systemic capillaries and surrounding tissue fluid, according to the McGraw-Hill College Division. In contrast, external respiration is the exchange of gases between air in the alveoli of the lungs and blood in pulmonary capillaries.
What happens during internal respiration?
External respiration occurs in the lungs where oxygen diffuses into the blood and carbon dioxide diffuses into the alveolar air. Internal respiration occurs in the metabolizing tissues, where oxygen diffuses out of the blood and carbon dioxide diffuses out of the cells. This is the external respiration.