Tissue
A group of cells that act together to perform a specific function or set of functions
Histology
The microscopic study of tissues
Petrifaction
The process by which organic materials are turned into a stony substance
Voluntary muscles
Muscles that you can control by thinking about what you want them to do
Involuntary muscles
Muscles that cannot be controlled by thinking about what you want them to do
Tendon
A flexible but non-elastic cord that attaches muscle to bone
Ligament
A band that holds together joints or holds organs in place
Adipose tissue
Tissue that stores fat
Secretion
The process by which a cell makes useful chemicals and then releases them into the body