Fill in the blanks: The subunit of compact bone is the _____ . It consists of rings of bone matrix called ______that surround a structure called the______ that contains blood vessels and nerves. Other structures called _______also contain blood vessels and nerves. Osteocytes are housed in_____and communicate via_______.

Video transcript

Hey, everyone. Let's take a look at this question together. The HG system houses the following, except which is it? Answer choice. A nerves, answer choice, B blood vessels, answer choice C lymphatics or answer choice D muscles. Let's work this problem out together to try to figure out which of the following answer. Choices is not a component of the Harver Gian system. So in order to solve this question, we have to recall what components are included in the HG system, which we can recall that the term HG system refers to the microscopic structural unit of compact bone, which is also referred to as an osteon. And within an osteon are concentric rings of a calcified matrix called Lamela. And at the center of each osteon is the central or hovers. Now, which the central or hovers canal contains blood vessels, nerves and lymphatic vessels. So blood vessels, nerves and lymphatic vessels are all found within the Harver system. So answer choices. A B and C are all incorrect, making answer choice D muscles, the correct answer since muscles are not housed in the HRS system. So it is the correct answer. I hope you found this video to be helpful. Thank you and goodbye.