The Digestive System Part 1 Proctored Exam Complete Solutions 100% Verified Answers.

*Digestion* - correct answer the mechanical and chemical breakdown of foods for use of the body's cells *absorption* - correct answer the passage of digested food from the digestive tract into the cardiovascular system *elimination* - correct answer the expulsion of undigested food or body wastes What 2 processes are part of digestion? - correct answer mechanical and chemical Mechanical Process - correct answer chewing, mashing, and breaking food into smaller pieces Chemical Process - correct answer digestive juices change food into simpler substances Digestive Juices - correct answer secretions produced by various organs in the digestive system What systems play a major role in digestion? - correct answer Nervous and Cardiovascular What role does the nervous system play in digestion? - correct answer triggers digestive process to begin at the sight or smell of food and controls muscles that move food What role does the cardiovascular system play in digestion? - correct answer Delivers broken down food to all cells of the body Where does the digestive process begin? - correct answer mouth What is the first process of the digestive system? - correct answer ingestion Ingestion - correct answer Taking food into the body Structures involved in ingestion - correct answer teeth, salivary glands, and tongue Purpose of teeth - correct answer break down food you eat into smaller pieces *Mastication* - correct answer process of chewing Purpose of salivary glands - correct answer produce the first digestive juices Where are salivary glands found? - correct answer mouth Role of saliva - correct answer breaks down starch and sugar in food and lubricates food to make swallowing easier Purpose of the tongue - correct answer forms chewed food into a size and shape that can be swallowed purpose of muscular contractions - correct answer forces food into the pharynx When do muscular contractions occur? - correct answer as you swallow Pharynx - correct answer throat uvula - correct answer small flap of muscular tissue that closes the opening to nasal passages where is the uvula? - correct answer In the back of the mouth Epiglottis - correct answer Flap of tissue covering throat What does the epiglottis do? - correct answer closes opening to trachea to prevent food from entering the respiratory system trachea - correct answer windpipe