Osmotic and chemical process
Respiration
3 separate but related functions
Ventilation and gas exchange in the lungs.
External respiration
Gas exchange between the blood and other tissues.
Internal respiration
Structures of the Respiratory System
Nasal cavity, pharynx and larynx
Upper respiratory
Trachea and lungs
Lower respiratory
Nsal cavity, pharynx, larynx, trachea, bronchi, bronchioles
Conducting division
Respiratory bronchioles, alveolar ducts and sacs and pulmonary alveoli
Respiratory division
Pumping Mechanism of the Respiratory System
Thoracic cage
Diaphragm
Types of Breathing
Costal (thoracic)
Abdominal (diaphragmatic)
Occurring when more air is needed than movement of the diaphragm produces.
Costal (thoracic)
Occurring during ordinary quiet breathing.
Abdominal (diaphragmatic)
Normal quiet respiration
Eupnea
Difficult breathing
Dyspnea
Absence or cessation of respiration
Apnea
Increased depth or rate of breathing or both
Hypernia
Rapid, shallow breathing
Polypnea
Nose
External openings of the respiratory tract
External nares (nostrils)
Lacks a planum, its nose being instead covered with fine hair.
Horse
Possesses a nasolabial planum
Ox
Have nasal planum
small ruminants and dogs
Features a rostral planum that is supported by a rostral bone.
Pig