Question

which important features of flatworms enable them to survive using direct diffusion method of gas exchange

Answer 1

Gas Exchange Process

Explanation:

• Gases are exchanged between the alveolar air and the blood by diffusion, the development of particles from a region of higher focus to a territory of lower fixation, where focus concentration to the amount of one substance is available in a mixture of substances.  
• Three procedures are essential for the exchange of oxygen from the outside air to the blood moving through the lungs
• Perfusion,Ventilation and diffusion is the procedure by which air moves all through the lungs
• Entilation (V) alludes to the progression of air into and out of the alveoli, while perfusion (Q) alludes to the progression of blood to alveolar vessels
• Singular alveoli have variable degrees of ventilation and perfusion in various districts of the heart.

Answer 2

Students will be able to describe the make up of atmospheric air and how it relates to patient care;

Students will be able to describe the passive and active processes of inhalation and exhalation;

Students will be able to apply their knowledge of the gas exchange process to a sick patient.

Trillions of cellular metabolic processes happen in the human body. Most of these cellular functions require oxygen to effectively and efficiently complete these processes. In most cases, this oxygen consumption results in the creation of carbon dioxide, a potentially dangerous byproduct of cellular metabolism. This large-scale use of oxygen, and the resulting creation of carbon dioxide, requires a highly efficient absorption/elimination and transport system.

The body has two routes for the elimination of carbon dioxide: the lungs and the kidneys (the lungs being the primary and most efficient route).1 However, the lungs are only one route available for the absorption of oxygen, and the blood (or cardiovascular system) is the only method available for its transportation. Because of this, the lungs must maintain normal function. To do so, they need to work in conjunction with the cardiovascular system and interact with the environment in a highly effective manner. This will allow them to proficiently facilitate the exchange of these vital and dangerous gases.

Gas exchange is the process of absorbing inhaled atmospheric oxygen molecules into the bloodstream and offloading carbon dioxide from the bloodstream into the atmosphere.2 This process is completed in the lungs through the diffusion of gases from areas of high concentration to areas of low concentration. The process also requires that oxygen move from its gaseous environment into a liquid environment and carbon dioxide move from a liquid environment into a gaseous environment. This article explores the gas-exchange process by taking a closer look at the