Digestive System Overview
Breaks down large particles into smaller ones, but doesn’t change chemical composition
What is mechanical digestion?
The process of exchanging gases between the atmosphere and body cells
What is respiration?
The 2 tracts of the respiratory system
Consists of the heart, blood, and blood vessels
What is the circulatory system?
Responsible for ingesting food, mastication, speech, and sensory reception
What is the mouth?
Breaks down food particles chemically by changing them into simpler chemicals
What is chemical digestion?
Breathing in and out
What is ventilation?
What is the nose?
The flow of blood through blood vessels
What is Circulation?
Forms the lateral walls of the mouth
What are the cheeks?
Carry out mechanical and chemical digestion, as well as ingestion, propulsion, absorption and defacation
Breathing in
What is inspiration?
Lies posterior to the oral cavity and between the nasal cavity and larynx
What is the pharynx?
Carries oxygen, carbon dioxide, bicarbonate buffer, nutrients, and metabolic wastes
What is blood?
Sensory receptors judge temperature and texture of food
What are lips?
The gastrointestinal tract
What is the alimentary canal?
Breathing out
Houses vocal cords
What is the larynx?
Covers the heart and large blood vessels
What is the pericardium?
Thick, muscular organ that occupies the floor of the mouth and almost fills the oral cavity when the mouth is closed
What is the tongue?
What is the mouth?
Exchange of gas between capillaries and body cells
What is internal respiration?
Parallel and anterior to the esophagus
What is the Trachea?
Made up of the epicardium, myocardium, and endocardium
What is the heart wall?
Forms roof of the oral cavity
What is the palate?