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Respiratory System

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by

Lauren Miller

on 5 February 2013

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Transcript of Respiratory System

The Beginning Larynx
"The voice box" Lungs Trachea
"windpipe" Structure Nasal Cavity Structure: Bronchial Tubes Structure Structure Melissa Marable
Lauren Miller
Mac Bryan Pharynx Respiratory System Function Size Passageway for oxygen entering the lungs
Passageway for carbon dioxide exiting lungs
Filters particles from the air (cilia) Airway connecting larynx to bronchial tubes
Hyaline cartilage: prevents collapsing
Mucous Membrane: lines trachea
Goblet cells: produce mucus
(Hairlike) Cilia: push mucus out
Divides into left and right bronchi Diameter: 20-25 mm
Length: 10-15 cm Function Size Direct oxygen to right and left lung
Direct carbon dioxide out of lungs Airway connecting trachea to lungs
Hyaline cartilage: prevents collapsing
Mucous Membrane: lines bronchial tubes
Cilia: removes mucus (wave motion)
Mediastinum: branching of 2 main tubes
Right bronchus and left bronchus
Branch into right and left lung
Divide into each lobe
Bronchial tree: within lungs
Bronchi, bronchioles, alveoli
Bronchi: branch into bronchioles
Bronchioles: end in alveoli (airsacs)
Branching: decrease in mucus and cilia Right bronchus: 2.5 cm (length)
Left bronchus: 5 cm (length)
Bronchioles: <1 mm (diameter) Function Size Length: 25-35 cm
Width: 10-15 cm
Weight: 2.5 lbs
Left = 567g
Right = 625g
Surface area: 160 meters squared
Single's area of tennis court Main organ in Respiratory system
Respiration (breathing)
15-18 times per minute
Gas exchange: inhalation and exhalation
Take in oxygen, remove carbon dioxide
Transport oxygen to blood, remove waste
Diaphragm: supports and enables function
Movement: push up, push down Cone-shaped
Contain all bronchi beyond primary
2 lungs: sides of breastbone
Lungs: divided into 5 lobes
Lobes: right 3, left 2
Left Lung: smaller than right
Chest cavity: supports and protects lungs
Diaphragm: muscle located under lungs
Pleura: membrane that surround lungs Diaphragm Structure The Respiratory System Function as a whole Breathing (respiration)
Supplies blood with oxygen
Transported throughout the body
(Cells rely on oxygen to survive)
Air flow: speech made possible
Goal: deliver oxygen, remove carbon dioxide
Divided into:
Upper respiratory tract
Lower respiratory tract
Made up of:
Airways
Lungs
Linked blood vessels
Muscles Link between other Systems Digestive System Circulatory System Link Between Organs Works Cited Divided into 3 main parts
supralarynx
larynx (glottis)
Sublarynx
Extends from 4th-6th vertebra
9 cartilages connected by muscle/ligaments
Lined with mucosa Function: Essential in human speech
Vocal cords vibrate with air=pitch
Protects lungs from food
Breathing
Muscles closed=holding breath
Muscles relaxed= inhaling/exhaling Size: Lenth:
Male= 44mm
Female= 36mm Structure: Divided into nasal passages (nostrils)
Formed with cartilage
Lies on roof of mouth bone
Roof is curved and narrow
Lined with mucosa Function: Filters and warms air
Makes moist before lungs
Hairs at nostrils to trap particles
Mucous to keep nose from nosebleeds Size: Varies:
Men vs. Women
Adult vs. child Structure: Divided into upper and lower
Upper: allows only air to pass
Lower: allows air, foods, and fluids
Connects the nasal cavity to larynx
Also divided into 3 other parts:
Nasopharynx: top+allows air
Oropharynx: middle+air, food+tonsils here
Laryngopharynx: food, air+ connects to esophagus Function: Both respiratory and digestive system
Air to lungs
Food and fluids to stomach Size: About 5 inches long "Conducting Passages." SEER Training: Conducting Passages. SEER Training,
27 Nov. 2012. Web. 01 Feb. 2013. <http://training.seer.cancer.gov/anatomy/respiratory/passages/>. Alveoli Nervous System Tiny air sacs
Primary gas exchange of the lung
O2 passes into red blood cells
CO2 becomes waste product
CO2 moves to alveoli
CO2 moves to bronchial and out Structure Pharynx controls path of food
Directs to stomach to be digested Looks like bunches of grapes
At the end of bronchial tubes
Capillaries surround alveoli Oxygen transported to blood
Carbon Dioxide removed from blood Function Sensitive to inflation, deflation, chemical stimulation
Ex. cough, changes in breathing patterns Size 200-300 microns
(.) = about 615 microns Dome shaped muscle
Located below lung
separates chest cavity from abdominal cavity Function Main muscle used for breathing
Breathe in/inhale= diaphragm contracts (tightens)
Enlarges space available in thoracic cavity
Creates negative pressure
Leads to suction force
Drawing of air into the lungs
Exhale= elastic recoil of lungs and tissues Size Size varies
Fits under chest cavity Hopkins, Johns. "Alveoli." Interactive Respiratory Physiology. Johns Hopkins, n.d. Web. <http://oac.med.jhmi.edu/res_phys/Encyclopedia/Alveoli/Alveoli.HTML>.

"The Respiratory System." National Heart, Lung, and Blood Institute.
National Institutes of Health, 17 July 2012. Web. 4 Feb. 2013. <http://www.nhlbi.nih.gov/health/health-topics/topics/hlw/system.html>. http://www.brainpop.com/health/bodysystems/respiratorysystem/
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