Fill in the blank with the appropriate term. 1. The human machine is organized at different levels, starting with the cell and ending
with the entire .
2. At each higher level of organization, there is a greater degree of .
3. Many human cells are specialized in form and .
4. Muscle cells have many that provide the energy they need to
move the body.
5. After the cell, the is the next level of organization in the human
body.
6. tissue protects the body and its internal organs.
7. Epithelial tissue secretes substances such as .
8. Nervous tissue makes up the brain and the that connect the brain
to all parts of the body.
9. Human organs are organized into organ .
10. The system takes in oxygen and releases waste gases.
11. The skeletal system provides to the body and protects
internal organs.
12. Functioning together, the organ systems keep , pH, and other
conditions at just the right levels to support life processes.
Match the vocabulary word with the proper definition.
Definitions
1. process in which mineral deposits replace cartilage and change it into bone
2. type of bone cell that regulates mineral homeostasis by directing the uptake of
minerals from the blood and the release of minerals back into the blood as needed
3. band of fibrous connective tissue that holds bones together
4. soft connective tissue in spongy bone that produces blood cells
5. dense outer layer of bone that is very hard and strong
6. type of bone cell that dissolves minerals in bone and releases them back into
the blood
7. place where two or more bones of the skeleton meet
8. rigid framework of bone that consists of tough protein fibers and mineral
crystals
9. light, porous inner layer of bone that contains bone marrow
10. human body system that consists of all the bones of the body as well as
cartilage and ligaments
11. type of bone cell that makes new bone cells and secretes collagen
12. tough, fibrous membrane that covers the outer surface of bone
Terms
a. bone marrow
b. bone matrix
c. compact bone
d. joint
e. ligament
f. ossification
g. osteoblast
h. osteoclast
i. osteocyte
j. periosteum
k. skeletal system
l. spongy bone