Skeletal System Overview

Question 1

Explain why bone is considered an organ.

Answer 1

Because they have several different tissue types.

Question 2

How many bones are in an average adult human body?

Answer 2

206

Question 3

Compact bone

Answer 3

dense, smooth, outer layer of bones. Has lots of pores

Question 4

Spongy bone

Answer 4

less compact (inside layer of compact bone). Has honeycomb structure, helps bones resist stress. (Its lighter/less dense)

Question 5

Diaphysis

Answer 5

compact bone that forms the shaft of the bone. Medullary cavity runs through the center.

Question 6

Yellow bone marrow

Answer 6

created of fat and stem cells

Question 7

Epiphysis

Answer 7

ends of bones, outer is compact, interior is spongy.

Question 8

Red bone marrow

Answer 8

red bone marrow creates BLOOD CELLS.

Question 9

Epiphyseal plate

Answer 9

between the epiphysis and diaphysis. Layer of hyaline cartilage where growth occurs to lengthen bone.

Question 10

Medullary cavity

Answer 10

runs through the center of diaphysis. Hallow part of the bone that contains bone marrow.

Question 10

Endosteum

Answer 10

lines spaces in spongy bone and medullary cavity.

Question 10

Periosteum

Answer 10

covers the entire bone except joining surfaces.

Question 11

Articular cartilage

Answer 11

covers joint surfaces.

Question 12

What is osteoporosis?

Answer 12

Osteoporosis is a disease showing a decrease in bone mass due to the rate of bone resorption exceeding the rate of bone formation.