Bone Classifications and Markings

Question 1

Spongy bone

Answer 1

Small needle like pieces of bone, lots of open space.

Question 2

What are the 4 bone shapes?

Answer 2

1. Long bone
2. Short bones
3. Flat bones
4. Irregular bones

Question 3

Long bone

Answer 3

Longer than they are wide, mostly compact bone. Ex. Bones in the limbs.

Question 4

Short bones

Answer 4

Cube shaped, mostly spongy. Ex. Knee/carpal bones

Question 5

Flat bones

Answer 5

Thin, flat and usually curved. Two layers of contact bone sandwiching spongy bone. Ex. Skull, ribs and sternum.

Question 6

Irregular bones

Answer 6

Don’t fit in any other category. Ex. Vertebrae and hip bones.

Question 7

Compact bone

Answer 7

Dense, looks smooth.

Question 8

Tuberosity

Answer 8

Large rounded projection.

Question 9

Crest

Answer 9

Narrow ridge of bone, usually prominent.

Question 10

Trochanter

Answer 10

Large, blunt and irregularly shaped process.

Question 11

Line

Answer 11

Narrow ridge of bone, less prominent.

Question 12

Tubercle

Answer 12

Small, rounded projection.

Question 13

Epicondyle

Answer 13

Raised are on or above a condyle.

Question 14

Spine

Answer 14

Sharp, slender, often pointed projection.

Question 15

Head

Answer 15

Bony expansion on a narrow neck.

Question 16

Facet

Answer 16

Smooth, nearly flat articular surface.

Question 17

Condyle

Answer 17

Round articular projection.

Question 18

Ramus

Answer 18

Arm like bar of bone.

Question 19

Meatus

Answer 19

Canal like passageway.

Question 20

Sinus

Answer 20

Cavity filled with air and line with mucous membranes.

Question 21

Fossa

Answer 21

Shallow depression in bone, often serving as an articular surface.

Question 22

Fissure

Answer 22

Narrow, slit like opening.

Question 23

Foramen

Answer 23

Round or oval opening through a bone.