Cavity within bone, filled with air and lined with mucous membrane
What is a sinus?
100
This type of bone is dense, smooth and homogeneous. It forms the diaphysis of a long bone.
What is compact bone?
100
Shaft of a long bone.
What is the diaphysis?
100
mature bone cells
What are osteocytes?
100
Bone builders.
What is an osteoblast?
200
Shallow, basinlike depression in a bone, often serving as an articular surface.
What is a fossa?
200
This type of bone is composed of trabeculae. The open spaces between the bars of bone contain marrow.
What is spongy bone?
200
Covered with articular cartilage, composed of spongy bone.
What is the epiphysis?
200
Tiny cavities within the matrix that houses osteocytes.
What is the lacunae?
200
The skeleton of an embryo is primarily made from this type of cartilage.
Chondrocytes (cartilage cells) are replaced by Osteocytes during skeletal development.
What is hyaline cartilage?
300
Round or oval opening through a bone.
What is a foramen?
300
Examples of these bones are the tarsals (ankles) and carpals (wrists). They contain more spongy bone than compact bone.
What are short bones?
300
The membrane composed of connective tissue which surrounds the bone. It's name means around the bone.
What is the periosteum?
300
Bone matrix that encircles a central canal.
What is lamella?
300
Bones are remodeled in response to these two factors.
What is calcium levels in the blood and the pull of gravity and muscles on the skeleton?
400
very large blunt irregularly shaped process (only found on the femur)
What are the trochanters?
400
This type of bone is generally thin, with a layer of spongy bone sandwiched between compact bones. Name the type of bone and provide an example.
What are flat bones; found in the skull, ribs, and sternum.
400
What is the difference between the composition of the epiphyseal line and the epiphyseal plate?
What is the plate contains hyaline cartilage, the line is completely replaced by bone.
400
The name for the central canal. It contains blood vessels and nerves. These structures connect to each other with large pathways called perforating or Volkmann's canals.
What are the Haversian canals?
400
When blood calcium levels drop the parathyroid gland activates these cells to break down bone matrix and release calcium ions into the blood.
What are osteoclasts?
500
If this narrow ridge of bone is prominent it is called a _________. If it is less prominent it is called a _________.
What is crest?
What is a line?
500
Besides contributing to body shape and form, our bones perform several important body functions. List the five functions described in the text.
What is
1. support
2. protection
3. movement
4. storage
5. blood cell formation?
500
Yellow marrow found in this cavity of the bone? What makes it yellow?
Where is the red marrow found. What happens there?
What is...yellow is in the medullary cavity. It contains adipose (fat).
What is...in spongy bone (epiphysis). It contains blood forming cells.
500
Tiny canals that radiate from the central canal to all lacunae. The lacunae are spaces that house the osteocytes. Why are they important?
What are canaliculi? These canals are important because each bone cell needs a supply of blood to provide oxygen and remove carbon dioxide.
500
The role of calcium in the blood is to... there are three functions describe two of the three to get the points.
What is for the nervous system to transmit messages, for muscles to contract and blood to clot?