The respiratory system is interconnected with which other system?
The pulmonary system (oxygenation of blood through lungs)
What are the 5 functions of the respiratory system?
Gas exchange, regulation of blood pH, voice production, olfaction, protection
____ are organs for gas exchange
During gas exchange, ____ enters blood and ___ leaves
Oxygen, carbon dioxide
What is the pH range of blood?
Increased amount of CO2 in the blood in turn increases _____. Name two pH disorders/diseaes.
acidity- acidosis and alkylosis
Olfaction sensory information bypasses the ____ and goes directly to the ____
The respiratory system acts as protection against ___ by preventing entry and removing them from the air you breathe (filtering).
What are the two major divisions of the respiratory system?
Upper and lower tract
Pharynx=_____, Larynx=____, Trachea=____, Bronchi= _____
Pharynx= throat, Larynx= voice box, Trachea= windpipe, Bronchi= branches of trachea
What are the 3 components of the upper respiratory tract?
Nose, pharynx (throat) and associated structures
What are the 4 components of the lower respiratory tract?
Larynx (voice box), trachea (windpipe), bronchi (branches of trachea) and lungs
What is the pathway of air in a normal breath (through the nose)???????
1. Enter through nostrils (external nose) 2. Enter nasal cavity (allows air to pass through it in and out) 3. nasopharynx 4. oropharynx 5. laryngopharynx
What are the 4 functions of the nasal cavity?
Passageway for air, smell, cleans the air, and humidifies/warms the air
What are the 3 horizontal bones/shells of the nasal cavity and what is their significance?
Nasal conchae- interfere with flow of air (turbulence) so air stays there longer: advantage= smell longer, and cleaning
What type of epithelium is found in the nasal cavity?
Ciliated pseudostratified columnar epithelium
What is the nasal septum?
Hyaline cartilage that separates the nostrils and nasal cavity into 2 halves (2 bones= vomer-inferior and ethmoid-superior)
The nasal cavity is lined with mucous secreting _____. What does the cilia do to the mucous?
Goblet cells- cilia sweep mucous out of the nasal cavity to the throat where it is either swallowed or spit out
Why does it hurt to breathe air in through your mouth of a cold day? Why is it better to breathe through your nose?
Mouth: when you breathe out, you are getting rid of heat and lots of moisture from your lungs
Nose: reduction of water and heat loss because the mucous supplies water and heat from your blood is warming up the walls of the nasal cavity therefore humidifying/warming the air