Question

quiz: intro to the skeletal system and skull lab activities
question 13
identify the highlighted structures.

Explanation:

To identify the highlighted structure (the yellow - colored, concentric - ring - like structure around the central canal, which is a cross - section of an osteon in compact bone), we can use the following knowledge:

Step 1: Recall the structure of compact bone

In compact bone, the basic functional unit is the osteon (also called the Haversian system). An osteon consists of a central canal (Haversian canal) surrounded by concentric layers of bone matrix called lamellae. Between the lamellae are the lacunae (which house osteocytes), and the canaliculi connect the lacunae.

Step 2: Analyze the image

The yellow - highlighted structure in the image shows the concentric layers around the central canal. This structure is the osteon (Haversian system). The osteon is responsible for providing structural support and containing the blood vessels and nerves in the central canal that supply the bone cells.

Answer:

The highlighted structure is the osteon (Haversian system).