Fill in the blanks: The lymphoid organ that filters the blood is the ______, and the lymphoid organ that filters the lymph is the______.

Video transcript

Hey, everyone. Let's take a look at this question together which region of the spleen is responsible for destroying old erythrocytes. Is it answer choice. A the red pulp. Answer choice B the white pulp, answer choice C the trabecula or answer choice. D all of the above. Let's work this problem out together to try to figure out which of the following answer. Choices is the region of the spleen responsible for destroying old erythrocytes. So in order to solve this question, we have to recall what we have learned about the different regions of the spleen and which region is responsible for destroying old erythrocytes. And we can recall that within the reticular tissue framework of the spleen are two distinct histological regions. And those two distinct histological regions are the red pulp and the white pulp, which the red pulp contains macrophages that are responsible for destroying old erythrocytes. Whereas the white pulp is responsible for filtering pathogens from the blood and the white pulp contains leukocytes. So looking at our answer choices, since we are looking for the region of the spleen responsible for destroying old erythrocytes, which we know is the red pulp answer choice A is the correct answer and all other answer choices are incorrect. I hope you found this video to be helpful. Thank you and goodbye.