Which bone marking is described as a canal-like structure?
Learning Objectives
| Bone Markings (Table 7.2) | ||
|---|---|---|
| Marking | Description | Example |
| Canal | Passage in bone | Auditory canal |
| Fissure | Slit through bone | Auricular fissure |
| Foramen | Hole through bone | Foramen magnum in the occipital bone |
What is a canal-like structure called?
Meatus. Canal-like structure. Foramen. Round or oval opening through a bone.
Which type of bone markings are characterized as narrow ridge?
Bone Markings
| A | B |
|---|---|
| Tuberosity | large rounded projection, may be roughened |
| Crest | narrow ridge of bone, usually prominent |
| Trochanter | very large, blunt, irregularly shaped process, the only examples are on the femur. |
| Line | narrow ridge of bone, less prominent than a crest |
What is a facet bone marking?
Facet – A smooth, flat surface that forms a joint with another flat bone or another facet, together creating a gliding joint. Examples can be seen in the facet joints of the vertebrae, which allow for flexion and extension of the spine.
What are the major types of bone markings?
There are three general classes of bone markings: (1) articulations, (2) projections, and (3) holes. As the name implies, an articulation is where two bone surfaces come together (articulus = “joint”).
What is a canal in a bone?
Haversian canals are microscopic tubes or tunnels in cortical bone that house nerve fibers and a few capillaries. This allows bone to get oxygen and nutrition without being highly vascular. These canals also communicate with bone cells using special connections, or canaliculi.
What is the structure of bone?
Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix. Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.
What structures are found in the haversian canals?
The Haversian canal (osteonic canal) contains the bone’s blood vessels and nerve fibers (Figure 1). Osteons in compact bone tissue are aligned in the same direction along lines of stress and help the bone resist bending or fracturing.
