The alveoli passes the oxygen to the blood capillary by diffusion (high – low) and this is also how the waste (carbon dioxide) is passed back to the lungs to be breathed out this is why there is only a thin membrane so it can be passed through easily. Also diffusion is the movement of molecules from a region of low concentration until the concentrations are equal. When the air enters the body the upper airway (from the nostrils to the vocal cords), the sinuses either warm or cool the air that has been breathed in depending on the weather you have breathed in e.g. if it is hot it will cool the air down and if it’s cold it will warm the air
1. What are the differences between internal and external respiration? Internal respiration is when the body’s cells consume oxygen and discharge carbon dioxide. External respiration is when your body is actually breathing or ventilating. The difference is internal respiration happens at the cellular level while external respiration is the actual breaths.
This path will divide into even smaller branches that are known as bronchioles. At the end of the bronchioles are very small air sacs called alveoli. They deflate during exhalation and inflate when you inhale. The gas exchange of oxygen cycles through the lungs and then the blood stream as the walls of the alveoli shares the same walls with capillaries making the exchange of oxygen for carbon dioxide between the two very easy. The oxygen molecules attach to the red blood cells as the red blood cells move towards the heart, as the carbon dioxide is evacuated from the body by the exhale.
Write the equation for the chemical reaction that occurs for the transposrt of carbon dioxide as bicarbonate ions in blood:__ 3. The three basic steps of respiration are pulmonary ventilation, external respiration and cellular respiration. 4. For inhalation to occur, air pressure in the alveoli must be less than atmospheric pressure; for exhalation to occur, air pressure must be greater than atmospheric pressure. 5.
The extra mucus and fluids put extra pressure on the lungs. E. How would Cari’s lung compliance (the effort required to expand the lungs) be altered as her alveoli fill with fluid due to pneumonia? She will have a low compliance, because the lungs wont be able to expand with all the fluid build up. Usually lungs have a high compliance and expand easily and surfactant in alveolar fluid reduces surface tension. Decreased compliance is a common feature in pulmonary conditions that scar lung tissue.
The Respiratory System The respiratory systems main function is to inhale oxygen and exhale carbon dioxide. Its main components are the lungs (of which there are two) which are situated in a persons chest and the lungs are made up of bronchi. bronchioles and alveoli. The respiratory system is responsible for bringing in the oxygen needed to burn nutrients for energy, and for clearing out certain metabolic waste products. When a person inhales, they bring in oxygen into the lungs.
It doesn't, it only leads to losing water weight. No fat loss. Two ways to deal with dehydration Move the dehydrated person to a cool area so he/she can cool down, put a cool cloth on his/her forehead. - Sip water slowly. If you drink too much water, your cells can expand and eventually burst, which can be dangerous.
Your respiratory system works by you breathing air in through your nose and mouth, which wet and warm the air so it wont irritate your lungs. After that the air travels through your voice box, down your windpipe and then through bronchial tubes into your lungs. Cilia in your airways entrap foreign particles and germs to filter the air that you breathe. You then cough or sneeze the particles out of your body. The main components of the respiratory system are the nose (moistens air, filters air and warms air), larynx, pharynx, trachea (Connects the external respiratory organs with the lungs), bronchi (Components essential for external respiration), bronchioles (Each terminal bronchiole conducts air to an acinus in the lung), pleura, alveoli, and the diaphragm (contracts with each inspiration, becoming flattened downwards and increasing the volume of the thoracic
Explain your results with reference to the concentration of respiratory gases. The body constantly produces CO2 as a by-product of the metabolic energy production. Normally carbon dioxide is carried to the lungs by the blood and is expelled though exhalation. However, holding your breath increases the concentration of CO2 in the bloodstream which can cause suffocation, or feel unconscious. One of the most common causes of hyperventilating is high levels of oxygen in the blood.
NAME- IBIFURO SAM-EPELLE CLASS-SS2P SUBJECT-BIOLOGY TECAHER-MRS.SANNI Gas exchange Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: * the area available for diffusion * the distance over which diffusion occurs * the concentration gradient across the gas exchange surface * the speed with which molecules diffuse through membranes. Efficient gas exchange systems must: * have a large surface area to volume ratio * be thin * have mechanisms for maintaining steep concentration gradients across themselves * be permeable to gases. Single-celled organisms are aquatic and their cell surface membrane has a sufficiently large surface area to volume ratio to act as an efficient gas exchange surface. In larger organisms, permeable, thin, flat structures have all the properties of efficient gas exchange surfaces but need water to prevent their dehydration and give them mechanical support.