The red pulp areas of the spleen are sites of a. splenic sinusoids, macrophages, and red blood cells, b. clustered lymphocytes, c. connective tissue septa.

Video transcript

Hi, everyone. Here's our next question. What area of the spleen contains clustered lymphocytes and is primarily involved in immune responses. A red pulp, B, splenic sinusoids, C white pulp or D macrophages. Well, our answer here is Choice C white Pope. The white pulp of the, the spleen is made of lymphoid tissue, including lymphocytes and initiates the immune response to pathogens and foreign tissue. So that is our correct answer here. Let's look at the other answer choices to understand why they are not correct the red pulp, as you might guess by red in its name is works for the filtration and removal of old or damaged red blood cells. I wrote R B CS and act as a reservoir for red blood cells and platelets. So that's not our correct answer. It's not involved in the immune response so much as that. That's this has this purpose of refreshing the red blood cell supply and being this reservoir for red blood cells and platelets. Choice B the splenic sinusoids are specialized vascular channels and what does the vascular system do? Transport blood and these vascular channels do allow blood to travel through the spleen, but they're through the travel of red blood of blood cells through the spleen, not immune response as their function. So that's why choice B is not correct. And finally, macrophages, choice D, these are a type of immune cells found in many tissues including the spleen. So they're involved in the immune response. They're found in the spleen, but they are not specific to one area of the spleen. And that's what our question is asking about. So that's not a correct answer. So again, the area of the spleen that contains cholester lymphocytes and is primarily involved in immune responses. Choice c the white pulp. See you in the next video.