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Osteocytes and the Bone Matrix

Osteocytes are bone cells  that sit within chambers called lacuna.   Lacuna are connective via tine canals called canaliculi and form concentric circles around a central haversian canal.   This coloring worksheet may help with your understanding of these relationships. It can be very difficult to develop


The clavicle is commonly called the collarbone and it located in the upper chest region.  The word “clavicle” is latin for “little key” because it rotates like a key when the shoulder and arm are extended.  The clavicle connects to the acromion process of the scapula and

Tibia and Fibula

The lower leg bones of the human consist of the large tibia, which is commonly called the shinbone, and the smaller fibula which is located laterally.  Several features of these bones are visible from the outside of the body.  The large tibial tuberosity, is visible as a bulge

Femur – Distal End

The lower end of the femur, called the distal end, articulates with the tibia of the lower leg.   It consists of two large structures called condyles, which is the greek word for “knuckle.”   In fact, if you go to a butcher shop, you can order

Femur – Proximal End

The proximal end of the femur articulates with the hip.  The rounded head of the femur fits within the acetabulum of the coxal bones, forming a ball-and-socket joint.  The fovea capitis is a small depression in the head serves as an attachment point for ligaments.   The greater

Iliolumbar Artery

The iliolumbar arteries are named for their location, supplying blood to the lumbar region of the back and the ilium of the  of the pelvis.  They branch from the abdominal aorta just above where it splits into the external and internal iliac arteries.


The trachea is also called the windpipe and it connects the mouth to the lungs.   It is distinguished from the nearby esophagus by the presence of cartilage rings which prevent the airway from collapsing.   At the top of the trachea is the larynx, or the

Greater Omentum

The greater omentum is a fold of visceral peritoneum that hangs down from the greater curvature of the stomach.   It stores fat and also has an immune function, you might notice white spots embedded in the tissue – macrophage collections. The lesser omentum is found in