Nutrition Chapter 3: Digestion

A psychological desire to consume specific food

A psychological sensation that prompts us to eat

A region of the forebrain below the thalamus where visceral sensations, such as hunger and thirst, are regulated

Chemical messenger that is secreted into the bloodstream by one of the many glands of the body and acts as a regulator in the physiological processes at a site remote from the gland that secrete it.

Group of cells that perform particular set of functions; ex. muscle tissue

Two or more tissues performing specific function; ex. esophagus

A group of organs that work together to perform unique function; ex. Gastrointestinal system

A long, muscular tube consisting of several organs: the mought, esophagus, stomach, small intestine, and large intestine; process of digestion, absorption and elimination take place here

A tight ring of muscle separating some of the organs of the GI tract and opening response nerve signals indicating that food is already to pass into the next section

Earliest phase of digestion in which the brain thinks about and prepares the digestive organs for the consumption of food

A mixture of water, mucus, enzymes and other chemicals that moisten the mouth and food, binds food particles together, and begins the digestion of carbohydrates

A group of glands found under and behind the tongue and beneath the jaw that release saliva continually, as well as in response to thought, sight, smell or presence of food

A mouthful of chewed moistened food that has been swallowed

Muscular tube of the GI tract connecting the back of the mouth to the stomach

Waves of squeezing and pushing contractions that move food in one direction through the length of the GI tract