Respiration is the process by which living organisms produce energy from the nutrients they consume. It involves a series of chemical reactions that convert nutrients into a form that can be used by cells to power their various functions.
The most common type of respiration in animals and humans is aerobic respiration, which requires oxygen. This process occurs in the mitochondria, the powerhouses of the cell.
The first step of aerobic respiration is glycolysis, which breaks down glucose (a simple sugar) into two molecules of pyruvate. This process releases a small amount of energy and produces a molecule called NADH, which will be used later in the process to produce more energy.
The pyruvate is then transported into the mitochondria, where it is further broken down through a process called the citric acid cycle, also known as the Krebs cycle. This process releases even more energy and produces additional NADH molecules.
The final step of aerobic respiration is the electron transport chain, which uses the energy from the NADH molecules to produce ATP (adenosine triphosphate). ATP is the primary energy currency of the cell and is used to power all the cell's functions.
In the absence of oxygen, cells can use anaerobic respiration, which does not require oxygen but is less efficient at producing energy. One example of anaerobic respiration is fermentation, which is used by yeast and some bacteria to produce energy.
Overall, respiration is a vital process that allows living organisms to produce the energy they need to survive and thrive. It is a complex process that involves multiple steps and relies on the efficient functioning of various cellular structures and chemical reactions.
Mechanism of breathing and its neural regulation
Breathing Breathing is the process of taking in air from the atmosphere and then releasing it back out into it. It raises when a person is brisk walking, running or after a heavy exercise; similarly, decreases when a person is calm. The oxygen is then supplied to all the tissues of the body. Organs Organs of the respiratory system, like the nose, lungs, etc. Ans: Respiration that occurs in the presence of oxygen is called aerobic respiration.
Mechanism of Respiration in Human
In the form of bicarbonates Carbonic acid quickly ionizes to form ions i. What is the Respiratory Mechanism? A lot of students don't get reliable study material and they end up getting confused in concepts explained by other notes and textbooks, this is why students get recommended to get study material from a reliable platform, you can trust Vedantu ad it is the best reliable platform that gives 100% accurate study material and which is prepared by the specialized subject teachers who have years of experience. CO 2 + HHb-NH 2 Hb-NH-COOH About 20-23% of CO 2 are transported in this form. The increase in the intrapulmonary pressure increases the atmospheric pressure, which creates a pressure gradient, allowing the air to flow out of the lungs. Students who want a complete understanding of respiration in fishes can connect with the excerpts of Vedantu who will help you to get guidance from the subject excerpts. Mechanical ventilation is controlled by the phrenic nervewhich signals the diaphragm to contract, this occurs both automatically in response to the body's level of oxygen and CO2--via signals from the hypothalamus--and voluntarily, when an individual consciously focuses on their rate of breathing. Mechanism of Respiration Mechanism of respiration involves the breathing mechanism and exchange of gases.
Mechanism of Breathing: Definition, Inspiration, Expiration
This is the reason why pleural pressure is termed as negative pressure. Contraction of the diaphragm and the external intercostal causes inspiration, and relaxation of these muscles causes expiration. Exchange of Gases Oxyhaemoglobin is one of the chemical components formed during the transportation of oxygen. Water present in plasma has poor solubility for oxygen, so it carries only 3% of total oxygen. Respiratory Gas Transport After the gases have scattered in the lungs, causing the blood to become oxygenated, leaving carbon dioxide, the next phase of transportation of oxygen-rich blood to the tissues takes place. What is better- breathing through the chest or the stomach? The oxygenated air present outside the body being at high-pressure flow rapidly into the lungs. Transportation Through RBC Almost 97% of oxygen is transported through RBCs.
.jpeg)
