D. Differentiate between the following. Breathing and respiration. External and internal respiration. Exhalation and inhalation E. Answer these questions.Explain the mechanism of breathing in humanbeings.How does exchange of gases take place in human body?3. With the help of an experiment, prove thatthe exhaled air contains carbon dioxide. F.Give reasons for the following. 1.We breathe air. 2.breathing rate increase during fast physical activities. 3.We sneeze.
Answers
Answer:
Everything is related to our breathing process
Explanation:
Breathing and Respiration:
Breathing is the physical process where you inhale and exhale air in and out of your lungs. Inhaling brings in air containing Oxygen, which is absorbed and exchanged for Carbon Dioxide. The Carbon Dioxide, now in the air inside your lungs, is expelled when you exhale. The Oxygen is carried in your blood to the cells around your body where respiration takes place. Respiration is a chemical reaction where Oxygen is used to breakdown Glucose in order to generate energy which is then used by the cell to function.
External and 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.
Exhalation and Inhalation:
During exhalation, the lungs expel air and lung volume decreases. ... During inhalation, the diaphragm is contracted which increases the volume of the lung cavity. During exhalation, the diaphragm is relaxed which decreases the volume of the lung cavity.
Mechanism of breathing in human beigs:
The mechanism of breathing involves two main processes: inspiration and expiration. Inspiration occurs when the diaphragm and the external intercostal muscles contract. ... The contraction or relaxation of muscles around the lungs changes the entire volume of air inside the lungs, and so does the pressure.
Exchange of gases take place in human body:
Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
1.We breathe air:
Because of the correct mechanism of our metabolics.To keep our brain fresh.
2.Breathing rate increases during fast physical activities at that time our body is very active because of the exercises.
3.We sneeze:
When the foreign particles entered in our body it is removed when we sneeze