Intro To Skeletal System

Question 1

Describe the two general divisions of the skeletal system

Answer 1

Axial: Head, trunk, skull, ossicles, hyoid, sternum, ribs, spine

Appendicular: Arms, legs, shoulders, pelvis

Question 2

Compact Bone

Answer 2

-Dense, forms outer surface of bones. -Contains concentric, vertical Haversian canals.
-Contains osteons.

Question 3

Spongy Bone

Answer 3

-Forms inner marrow of bones.
-Formed from branching trabeculae. -Does not have osteons but contains irregular layers of bone.

Question 4

Functions of the skeletal system

Answer 4

-Support/framework
-Protection
-Movement/muscle attachment
-Mineral hemostasis
-Hematopoesis
-Yellow bone marrow storage

Question 5

Fissure

Answer 5

Deep furrow/cleft

Question 6

Foramen

Answer 6

Perforation through a bone or membrane

Question 7

Fossa

Answer 7

A depression, usually longitudinal

Question 8

Sulcus

Answer 8

Long narrow groove

Question 9

Meatus

Answer 9

External opening of a canal

Question 10

Condyle

Answer 10

Rounded articular surface at extremity of bone

Question 11

Facet

Answer 11

Small smooth area on bone

Question 12

Head

Answer 12

Rounded extremity of bone/a part of a complex muscle

Question 13

Crest

Answer 13

A bony ridge

Question 14

Epicondyle

Answer 14

Projection from a long bone where tendons or bones attach

Question 15

Line (linea)

Answer 15

Long narrow mark/strip

Question 16

Spinous process

Answer 16

Dorsal projection from centre of vertebral arch

Question 17

Trochanter

Answer 17

Body prominence at the proximal femur

Question 18

Tubercle

Answer 18

A small rounded point of a bone

Question 19

Tuberosity

Answer 19

Large tubercle or rounded elevation