In a concurrent exchange mechanism, the medium (air or water) flows…

Question Answered step-by-step In a concurrent exchange mechanism, the medium (air or water) flows… In a concurrent exchange mechanism, the medium (air or water) flows in the same direction of blood on the other side of the respiratory surface. This is considered a less efficient mechanism for exchanging substances (e.g., oxygen) from medium to blood, because … a. Concentration gradient of the substance is greater at the end of the vessels. As a result, diffusion can only occur towards the end of the vesselsb. Concentration gradient of the substance is the same throughout the length of the vessels. As a result, diffusion cannot occur throughout the length of the vesselsc. Concentration gradient of the substance is lower at the beginning part of the vessels, but increases along the lengths. As a result, diffusion rate decreases throughout the length of the vesselsd. Concentration gradient of the substance is greater at the beginning part of the vessels, but decreases along the lengths. As a result, diffusion rate decreases throughout the length of the vessels   Biology Science Physiology BIO 101 Share QuestionEmailCopy link Comments (0)