Introduction to the Skeletal System

The human adult skeleton has approximately how many bones?

• 106

• 166

• 206

• 266

What type of tissue is bone?

• epithelial tissue

• connective tissue

• muscle tissue

• nervous tissue

Articular cartilage forms the joint surface on what part of the long bone?

• epiphysis

• diaphysis

• marrow

• spongy bone

The thyroid and parathyroid glands secrete hormones that continuously absorb and release what mineral?

• calcium

• sodium

• oxygen

• phosphorus

What attaches bone to bone?

• cartiilage

• tendons

• ligaments

• muscles

Where is fat stored in a long bone?

• diaphysis

• red bone marrow

• yellow bone marrow

• periosteum

Where are red blood cells made in a long bone?

• diaphysis

• red bone marrow

• yellow bone marrow

• periosteum

Osteocytes are

• mature bone cells.

• very active when blood calcium levels are low.

• bone building cells.

• cell that breaks down bone.

Tags

NGSS.HS-LS1-4

Osteoclasts are

• mature bone cells.

• very active when blood calcium levels are low.

• bone building cells.

• cells that break down bone.

Osteoblasts are

• mature bone cells.

• very active when blood calcium levels are low.

• bone building cells.

• cells that break down bone.