Definitions

Question 1

Osteon

Answer 1

A system of interconnecting canals in the microscopic structure of adult compact bones ( unit of bone)

Question 2

Periosteum

Answer 2

Double layered connective tissue that covers and nourishes the bone

Question 3

Osteoblasts

Answer 3

Bone forming cells

Question 4

Osteoclasts

Answer 4

Large cells that reabsorb or breakdown bone matrix

Question 5

Tubercle

Answer 5

Small, rounded projection or process (ex. Humerus(greater/lesser), adductor(knee)

Question 6

Tuberosity

Answer 6

Large rounded projection, may be roughened(ex. Tibia or deltoid)

Question 7

Trochanter

Answer 7

Very large, blunt, irregularly shaped process (ex. Only on the femur)

Question 8

Crest

Answer 8

Narrow ridge of bone, usually prominent (ex. Iliac crest anterior crest(shin)).

Question 9

Epicondyle

Answer 9

Raised area on or above a condyle (ex. Above condyle of femur or humerus).

Question 10

Spine

Answer 10

Sharp, slender, often pointed projection (ex. Spine of scapula, vertebral spine).

Question 11

Process

Answer 11

Any bony prominence (ex. Spinous process, corocoid process).

Question 12

Line

Answer 12

Narrow ridge of bone, less prominent than a crest ( ex. In between trochanters).

Question 13

Head

Answer 13

Bony expansion carried on a narrow neck (ex. On the ends of femur or humerus).

Question 14

Facet

Answer 14

Smooth, nearly flat articulate surface (ex. Where ribs attach to the vertebra)

Question 15

Condyle

Answer 15

Rounded articulate projection(end of bone) (ex. Mandible( near ears), end of humerus, femur or tibia)

Question 16

Ramus

Answer 16

Arm-like bar of bone (ex. Mandible/ pubis)

Question 17

Sinus

Answer 17

Cavity within a bone filled with air and lined with mucous membrane(ex. Frontal, nose, ethmoid)

Question 18

Fissure

Answer 18

Narrow, slit-like opening(ex. Eye socket)

Question 19

Groove

Answer 19

Furrow(ex. Mandible or humerous)

Question 20

Meatus

Answer 20

Canal-like passageway(ex. Auditory meatus (your ear)).

Question 21

Fossa

Answer 21

Shallow, basin- like depression in a bone, often serving as an articular surface(ex. Supraspinous, sub scapular).

Question 22

Notch

Answer 22

Groove or space for structures to lie in(ex. Sternal notch).

Question 23

Osteocytes

Answer 23

A mature bone cell