Articular Projections
Attachment Projections
More Attachment Projections
Depressions
More Depressions
100

This rounded articular surface forms part of a joint and is often found at the ends of long bones.

What is a Condyle?

100

This prominent ridge on the bone serves as a major muscle attachment site.

What is a Crest?

100

This sharp, pointed projection provides attachment for muscles and ligaments.

What is a Spine?

100

This shallow, basin-like depression in a bone often serves as a point for articulations or to hold structures.

What is a Fossa?

100

This canal-like passageway is found within bones and allows structures to pass through.

What is a Meatus?

125

This small, flat articular surface allows for the smooth sliding motion of bones.

What is a facet?

125

A slightly raised and elongated ridge found on the bone, useful for muscle attachment.

What is a Line?

125

A projection above a bone's condyle, it provides surfaces for attachment.

What is an Epicondyle?

125

An elongated groove or trench-like depression on the bone surface.

What is a Sulcus?

125

This opening permits the passage of blood vessels and nerves through a bone.

What is a Foramen?

150

The upper rounded part of a bone that fits into a socket, commonly seen in the femur and humerus.

What is a head?

150

The roughened area on a bone that serves as a site for the attachment of tendons and muscles.

What is a Tuberosity?

150

Found along the ridge of the bone, this feature can be less prominent than a crest but still offers attachment points.

What is a Line?

150

A natural opening or cavity in the bone, especially those filled with air and lined with mucous membranes.

What is a Sinus?

150

This groove on the bone surface allows for the placement of tendons, nerves, or blood vessels.

What is a Sulcus?

175

 This articular surface is round and smooth, forming a joint that allows for rotational movement, such as in the femur. 

What is a Head?

175

A small, rounded projection that serves as a site for muscle and ligament attachment, often found near joints.

What is a Tubercle?

175

A bony protrusion that serves as a point of muscle attachment, smaller and more delicate than a tuberosity.

What is a Tubercle?

175

A deep groove or slit between adjacent parts of bones, often providing a pathway for nerves and vessels.

What is a Fissure?

175

 A larger, elongated opening or cleft within a bone, commonly found in the skull.

What is a Fissure?

200

A smooth, nearly flat surface on a bone that typically forms a gliding joint, seen in vertebrae and small bones of the wrist and ankle.

What is a Facet?

200

A large, irregular process found on the femur, serving as a key site for muscle attachment.

What is a Trochanter?

200

This thickened part of the bone is designed for the attachment of large muscle groups, and is generally rough in texture.

What is a Tuberosity?

200

A small, round depression that allows for the passage of a structure or for articulation with another bone.

What is a Fossa?

200

This natural cavity in the bone structure can contain air and aid in lightening the bone’s weight.

What is a Sinus?