What are depressions in anatomy?
Elevation and Depression in Anatomy When you move your lower jaw (mandible) in a downward direction, depression occurs. When you move your mandible upward, elevation occurs. Similarly, when you move your scapulae up, elevation of the shoulder girdle occurs.
Why do bones have depressions?
A hole is an opening or groove in the bone that allows blood vessels and nerves to enter the bone. As with the other markings, their size and shape reflect the size of the vessels and nerves that penetrate the bone at these points. Sharp bony angulations which may serve as bony or soft tissue attachments.
What is a hole in a bone called?
The foramen is the hole is an opening or groove in the bone that allows blood vessels and nerve to enter the bone.
What is shallow anatomical depression?
A shallow depression that takes part in joint formation is called a fossa. A fossa is a type of bone marking called an articulation.
What is a groove in a bone called?
Sulcus. a groove or furrow in a bone.
What are bone processes and depressions?
The surfaces of bones bear projections, depressions, ridges, and various other features. A process (projection) on one bone may fit with a depression on a second bone to form a joint. Another process allows for the attachment of a muscle or ligament. Grooves and openings provide passageways for blood vessels or nerves.
Is a fissure a depression or opening?
| MARKING | |
|---|---|
| Fissure | Narrow slit or groove between adjacent parts of bone through which blood vessels, nerves or ligaments pass |
| Foramen | Opening (hole) through which blood vessels, nerves or ligaments pass |
| Fossa | Shallow depression |
| Sulcus | Furrow or groove along a bone surface that accommodates a blood vessel, nerve or tendon |
Is a crest a projection or depression?
A projection is an area of a bone that projects above the surface of the bone….Learning Objectives.
| Bone Markings (Table 7.2) | ||
|---|---|---|
| Marking | Description | Example |
| Crest | Ridge | Iliac crest |
| Holes | Holes and depressions | Foramen (holes through which blood vessels can pass through) |
| Fossa | Elongated basin | Mandibular fossa |
What is a depression in the earth?
In geology, a depression is a landform sunken or depressed below the surrounding area. Depressions form by various mechanisms. Glacial valley: a depression carved by erosion by a glacier. River valley: a depression carved by fluvial erosion by a river.
Is a foramen a depression or projection?