(1)_____ the study of bones
(1)_____ is the study of joints
(1)_____ is the study of muscles
What are the 5 functions of the skeletal system?
All bones are composed of a strong, dense outer layer called the (1)_____ bone.
- protects the bone and gives it strength for supporting the body
They are also composed of an inner portion of less dense (2)_____ bone
- contains a spiculated network of interconnecting spaces called trabeculae
The (1)_____ in the spongy part of the bone are filled with red and yellow marrow
(1)_____ marrow produces red and white blood cells
(2)_____ stores adipose (fat) cells
Long bones have a central cavity called the (1)_____ cavity, which contains trabeculae filled with yellow marrow.
In long bones, the red marrow is concentrated at the (2)_____ of the bone and not in the medullary cavity
A tough, fibrous connective tissue called the (1)_____ covers all bony surfaces except the articular surfaces, which are covered by the articular cartilage.
"blood vessels and nerves enter and exit the bone through this tissue"
The tissue lining of the medullary cavity of bones is called the (1)_____
Bones contain various knoblike projections called (1)_____ and (2)_____, which are covered by the periosteum.
"Muscles tendons, and ligaments attach to the periosteum at these projections"
Bones are live (1)_____ and must receive a blood supply for nourishment or they die.
Bones also contain a supply of nerves.
Blood vessels and nerves enter and exit the bone at the same point, through openings called the (1)_____
Near the center of all long bones is an opening in the periosteum called the (1)_____ _____.
"the nutrient artery of the bone passes into this opening and supplies the cancellous bone and marrow"
The (1)_____ artery separately enters the ends of long bones to supply the area
The (2)_____ arteries enter at numerous ponits to supply the compact bone.
(3)_____ exiting the bones carry blood cells to the body
(1)_____ is the term given to the development and formation of bones.
Bones begin to develop in the (2)_____ month of embryonic life