solu on | RATED A+ | 2026 | UPDATED
Absorp on
The transport of dissolved substances into cells
Diges on
The process by which food is broken down into smaller substances that can be absorbed into
the body
Esophagus
A muscular tube that connects the mouth to the stomach
Hormone
Chemical messenger that is produced in one loca on in the body, travels to another loca on,
and causes a response
Lumen
The inside of the a hollow tube (e.g., the somach, intes nes, etc.)
Peristalsis
The process of wave-like muscle contrac ons of the diges ve tract that moves food along
Sphincter
Ringlike muscles that open and close like valves to control the flow of contents.
Gastrointes nal tract
A hollow tube consis ng of the mouth, pharynx, esophagus, stomach, small intes ne, and large
intes ne in which diges on of food and absorp on of nutrients occur.
Saliva
A watery fluid that is produced and secreted into the mouth by the salivary glands. It contains
lubricants and amylase
Bolus
A ball of chewed food mixed with saliva
Epiglo-s