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Why does oxygen diffusion from the alveolus to the alveolar capillary occur?
Diffusion (of anything) occurs because of a concentration gradient meaning there is more oxygen in one place than another. Alveolus when you inhale will have a higher concentration of oxygen that that of the alveolar capillary resulting in a concentration gradient, this causing diffusion to occur until equilibrium is met. This means more oxygen in alveolus so oxygen travels into the alveolar capillary until a balanced amount of oxygen is in both places, but then of course the oxygen is transported and you exhale and inhale so the process repeats.
Because there is more oxygen in an alveolus than in the blood around it oxygen diffuses?
When there is more oxygen in an alveolus than in the blood around it oxygen diffuses from the capillaries to the veins. This is due to the high concentration of oxygen in the alveoli.
What is a sentence for the word alveolus?
(Alveoli are the jaw sockets for teeth, or the individual air sacs in the lungs.) "In childhood, more than one tooth can occupy an alveolus." "In each alveolus of the lung, gases are exchanged with the capillary blood."
Is o2 concentration greater in the pulmonary capillaries or alveoli?
In the alveoli
How do sponges breathe?
A sponge gets its oxygen from the water. The oxygen moves from the water to the sponge by a process called diffusion. Diffusion is when molecules of a substance move from an area where they are highly concentrated (where there are a lot of oxygen molecules) to an area where they are less concentrated (where there are not a lot of oxygen molecules). Oxygen is more highly concentrated in the water then in the sponge. Therefore, the oxygen goes from the water to the sponge.
What system responds by delivering more oxygen to the cells?
Circulatory system delivers blood (containing oxygen) to cells.
What is the pathway of oxygen gas molecules from an alveolus of the lung to the the right atrium of the heart and where are the areas of the gas exchange?
Oxygen is transfered into the blood at alveoli. Oxygen travels along the pulmonary vein into the left ventricle of the heart. It then travels along the aorta to the body tissues, gathering impure blood (CO2) along the way. Travels back to the heart via the Vena Cava and all impure blood is emptied into the right atrium of the heart, before it travels back to the lungs via the pulmonary artery.
The gas that is more concentrated in the blood than in metabolically active tissues?
Oxygen is the gas that is more concentrated in the blood than in metabolically active tissues. Oxygen is transported by red blood cells and carried throughout the body to be utilized by tissues for cellular respiration.
How do capillaries exchange substances between the blood and the tissues?
Oxygen and Carbon Dioxide.
Which layer has more volume of oxygen between the troposphere and stratosphere?
The troposphere has more volume of oxygen compared to the stratosphere. This is because the troposphere is the layer of the atmosphere closest to the Earth's surface, where most atmospheric gases are concentrated, including oxygen. The stratosphere, located above the troposphere, has lower concentrations of oxygen.
What is capillarisation?
a capillary is our body's smallest form of blood vessel the more capillary's at the muscles, the more oxygen the muscles can use an increase in capillarisation means that there is an increase in blood vessels and subsequently an increase in the opportunity for blood (and oxygen) to be transported to and used by the muscles a decrease in capillarisation means that there is a decrease in poo vessels and subsequently a decrease in the opportunity for blood (and oxygen) to be transported to and used by the muscles aerobic or endurance training does well to bring about an increase in capillarisation, meaning that muscles can perform for longer peroids of time as they are able to use more oxygen for contraction
Why is arterial bleeding more serious than venous or capillary bleeding?
Arterial bleeding is more serious than venous or capillary bleeding because arteries carry blood with higher pressure and oxygen content, causing them to spurt or gush out more rapidly. This can lead to a faster blood loss and potential life-threatening situations if not controlled promptly. Arterial bleeding can result in more severe blood loss and tissue damage compared to venous or capillary bleeding.
