in lab we're going to look at bone under the microscope it looks something like this with a central canal where there's blood vessels vessels and nerves and we're going to feed that tissue with these canals called canal oliculi i like that word as we grow we're going to deposit rings of the melee our bones get big and that happens because these bone cells osteocytes will lay down new bone yeah but as we get older if we're not careful if we don't move enough this process goes backwards osteoporosis and we lose bone now osteocytes in the lacuna kind of look like one thing so that's why my label because you can't really tell the lacuna from the osteocytes so if you're wondering what that's about okay our job is to go into the lab get out the microscope on low power and look at what i've been talking about here there's the growth rings lamellae of the osteon that's just the bone system there's our central canal osteocyte and lacuna kind of one unit you may not see the canoliculi because they're so tiny if you don't see them you can just sketch them in pretend that you see them okay we do this all in the lab it's kind of fun you know because bone is alive and uh we have to be responsible uh for our body maintenance uh you know okay the next activity on the in this lab is to look at the foot one of those marvels of the human body because all these joints and bones will absorb shock and rebound and recoil that way in our knee is not traumatized you know it's smart to wear a loose fitting shoe and a shoe that doesn't have at a pinched uh tip or a rigid sole we want our feet muscular so try to go towards barefoot all right we're going to sketch the foot which is not that easy really but it's not an art class right so we just do what we can and you end up with something like this when you draw it um pay attention to the toe this is the big toe because that toe will tell you that this is the midline the medial part of the foot and this is the lateral the pinky is the lateral side right midline lateral with that information then you can go okay there's three cuny forms in a row that's the names of these bones the medial is on the toe side intermediate is next lateral comes third so cuneiform medial intermediate and medial and at the very end is the cuboid big blocky bone remember the job is to flex and protect our body okay navicular boat shaped here talus is huge that's where the tibia is going to attach the lower bone of our leg and here is the heel the calcaneus big tendon right there these are all called tarsals which is ankle in the heel metatarsals kind of the top of the foot i guess and phalanges when you're done it'll look something like this bone cell on top foot below good luck with it