Presentation Transcript
The Respiratory SystemOverview‘Doc’ Mullins, CRT LRTC RCPCapital High SchoolDual Credit Human Anatomy & Physiology II :The Respiratory SystemOverview‘Doc’ Mullins, CRT LRTC RCPCapital High SchoolDual Credit Human Anatomy & Physiology II
Purpose of the respiratory system :Purpose of the respiratory system To provide a constant supply of oxygen to keep your body cells functioning
To remove carbon dioxide from the body cells
Organs of the respiratory system :Organs of the respiratory system Nose / mouth
Nasal cavity
Pharynx
Epiglottis
Larynx
Trachea Trachea
Bronchus (bronchi)
Bronchioles
Alveoli
Pleura
Diaphragm Lungs
Slide 4:http://www.bbc.co.uk
Mouth & Nose :Mouth & Nose Brings air into the body
Nasal hairs in nostrils trap dust
Nasal cavity :Nasal cavity Warms & moistens air
Glands that produce sticky mucus line the nasal cavity
traps dust, pollen, and other materials that were not trapped by nasal hairs
cilia sweep mucus and trapped material to the back of the throat where it can be swallowed
Pharynx :Pharynx Tube-like passageway used by food, liquid, and air
At the lower end of the pharynx is a flap of tissue called the epiglottis
covers the trachea during swallowing so that food does not enter the lungs
Larynx :Larynx “Voice box”
The airway to which two pairs of horizontal folds of tissue, called vocal cords, are attached
Trachea :Trachea Air-conducting tube
Connects the larynx with the bronchi
Lined with mucous membranes and cilia
Contains strong cartilage rings
Bronchi :Bronchi Two short tubes that branch off the lower end of the trachea
Carry air into the lungs.
Singular - bronchus
Bronchioles :Bronchioles Tiny branches of air tubes in the lungs
Connect bronchi to alveoli
Alveoli :Alveoli Tiny, thin-walled, grapelike clusters at the end of each bronchiole
Surrounded by capillaries
Where carbon dioxide and oxygen exchange take place
Singular - alveolus
Slide 13:http://mhln.com
Slide 14:http://www.borg.com/~lubehawk/hrespsys.htm Diffusion
Pleura :Pleura Membrane lining the lungs and chest cavity
Diaphragm :Diaphragm Muscle wall between the chest and the abdomen that the body uses for breathing
Slide 17:http://mhln.com
Relationship to digestive system :Relationship to digestive system Cellular respiration requires glucose and oxygen to release energy to the body
C6H12O6 + 6O2 6CO2 + 6 H2O + Energy
Oxygen is provided by the respiratory system
Glucose is provided by the digestive system
(glucose is made during photosynthesis)