Skeletal System

What are the 2 types of skeletons?

• spongy bone and compact bone
• marrow and blood vessels
• axial and appendicular

The functions are the skeletal system are

• To support the body, protect the organs, store calcium, and produce blood cells

• to regulate the composition of body fluids by removing metabolic wastes and retain the balance of water, salt, and other nutrients

• to regulate and maintain bodily functions by producing hormones and releasing them into the blood stream

• to enable the diffusion of oxygen into the bloodstream and the removal of carbon dioxide from the bloodstream

Where is new blood cells created?

• In the scapula

• In bone marrow, located inside the bone

• In the patella

• In bone marrow, located inside the muscle tissue

The ends of a long bone are called the

• diaphysis

• epiphyses

• periosteum

• endosteum

Bone forming cells:

• osteocytes

• osteoblasts

• osteoclasts

• osteomasts

Bone destroying cells:

• osteocytes

• osteoblasts

• osteomasts

• osteoclasts

Bone tissue composed of small needle-like pieces of bone with open spaces:

• lacunae

• compact bone

• canaliculi

• spongy bone

Activates osteoblasts to break down bone matrix so calcium is released into the blood:

• osteoclasts

• osteocytes

• parathyroid hormone

• adipose tissue

Process of bone formation before birth:

• ossification

• hematopoiesis

• appositional growth

• atrophy

Mature bone cells:

• osteoblasts

• osteomasts

• osteocytes

• osteoclasts