Question

exact 20 sentences on human respiratory system please, I will mark them as the best answer.​

Answer 1

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1) The respiratory system, also called the gas exchange system, is the body getting rid of

carbon dioxide and taking in oxygen

2) Carbon dioxide, a waste product, goes out of the body.

3) Oxygen, which the body needs, comes in. The lungs are the main organ to do this.

4) In other words , a process in which oxidation of organic compounds occurs in cell and energy is released is called as Respiratory system .

5) The first step in this process is breathing in air, or inhaling. Inhalation means bringing air rich in oxygen into the body. Exhalation means giving out air rich in carbon dioxide from the body

6) Exhalation means giving out air rich in carbon dioxide from the body

7) The second step is gas exchange in the lungs where oxygen is diffused into the blood and the carbon dioxide diffuses out of the blood.

8) The third process is cellular respiration, which produces the chemical energy that the cells in the body need, and carbon dioxide

9) Finally, the carbon dioxide from cellular respiration is breathed out of body from the lungs.

10). Most important processes of HUMAN RESPIRATORY SYSTEM are Breathing and Gas Exchange

11) Breathing is the first step in respiration. For respiration to happen, the body needs a constant supply of oxygen, which is done by breathing.

12) Inhalation is the breathing in of air. To inhale, the lungs expand, decreasing the air pressure in the lungs.

13) The diaphragm (a sheet of muscular tissue that separates the lungs from the abdomen) is pulled downward. Also the muscles between the ribs contract to expand the chest.

14) Both of these actions expand the lungs. To fill the enlarged lungs, air from outside at higher pressure comes rushing into the area of low pressure in the lungs.

15) The lungs are made of many tubes or branches. As air enters the lungs, it first goes through branches called the bronchi, then through smaller branches called bronchioles, and finally into the air sacs.

16) The inhaled air goes down to the air sacs at the end of each bronchiole.

17) The air sacs are called alveoli — they have a large surface area, and are moist, thin, and close to a blood supply. The inhaled air has a much greater concentration of oxygen than carbon dioxide whilst the blood flowing to the lungs has a more carbon dioxide than oxygen.

18) This creates a concentration gradient between the air in the air sacs and the blood, meaning there is more oxygen in the air than the blood

19) As the membrane, oxygen can easily diffuse in and out. Oxygen at high concentration in the air sacs diffuses into the blood where oxygen concentration is low, and carbon dioxide at high concentration in the blood diffuses into the air sacs where carbon dioxide concentration is low.

20) The oxygen in the blood enters the circulatory system and is used by the cells in the body. The carbon dioxide in the air sacs are exhaled out of the body.

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Answer 2

• The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants.
• The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history.
• In land animals the respiratory surface is internalized as linings of the lungs.
• Gas exchange in the lungs occurs in millions of small air sacs called alveoli in mammals and reptiles, but atria in birds.
• These microscopic air sacs have a very rich blood supply, thus bringing the air into close contact with the blood.
• These air sacs communicate with the external environment via a system of airways, or hollow tubes, of which the largest is the trachea, which branches in the middle of the chest into the two main bronchi.
• These enter the lungs where they branch into progressively narrower secondary and tertiary bronchi that branch into numerous smaller tubes, the bronchioles.
• In birds the bronchioles are termed parabronchi.
• It is the bronchioles, or parabronchi that generally open into the microscopic alveoli in mammals and atria in birds.
• Air has to be pumped from the environment into the alveoli or atria by the process of breathing which involves the muscles of respiration.
• In most fish, and a number of other aquatic animals (both vertebrates and invertebrates) the respiratory system consists of gills, which are either partially or completely external organs, bathed in the watery environment.
• This water flows over the gills by a variety of active or passive means.
• Gas exchange takes place in the gills which consist of thin or very flat filaments and lammelae which expose a very large surface area of highly vascularized tissue to the water.
• Other animals, such as insects, have respiratory systems with very simple anatomical features, and in amphibians even the skin plays a vital role in gas exchange.
• Plants also have respiratory systems but the directionality of gas exchange can be opposite to that in animals.
• The respiratory system in plants includes anatomical features such as stomata, that are found in various parts of the plant.
• It includes your airways, lungs, and blood vessels.
• The muscles that power your lungs are also part of the respiratory system.
• These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.
• The air inhaled moves down the trachea into the lungs where oxygen is exchanged for carbon dioxide from the body tissues.
• Carbon dioxide is then exhaled out of the lungs through the mouth.

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