Chapter 16 Part 2 Flashcards
General function of the respiratory system?
Bring oxygen into the body (blood) and get rid of CO2
Place in order through which work travels
Bronchioles Larynx Trachea Nasal cavity Bronchi
Nasal cavity Larynx Trachea Bronchi Bronchioles Alveoli
Inhalation
Moving air in to the lungs
Muscles contract
Uses muscles between ribs to elevate rib cage and diaphragm to increase space in lungs
Exhalation
Moving air out of the lungs
No muscles used
Muscles relax
Gas exchange
Move O2 from air in lungs into the blood
AND
Move CO2 from blood into the air in lungs
Where does gas exchange take place in the respiratory system?
Alveoli (lungs)
What structure is responsible for making sound?
Larynx (voice box)
General function of the circulatory system ?
To move blood which will deliver O2 and nutrients to cells and take away CO2 and wastes
Function of the heart?
Pumping blood through blood vessels
Determine flow of the blood (where it is going)
Which chamber of the heart is responsible for pumping the blood to the lungs?
Right ventricle
Which chamber of the heart is responsible for pumping the blood to the body?
Left ventricle
Which chamber of the heart receives the blood when it comes back from the body?
Right atrium
Which chamber of the heart receives the blood when it comes back from the lungs?
Left atrium
Which chamber does blood enter next after it leaves the right atrium?
Right ventricle
Which chamber does blood enter next after it leaves the left atrium?
Left ventricle
Which direction does blood flow in an artery? Towards the heart or away from the heart?
Away from the heart
Which direction does blood flow in a vein? Towards the heart or away from the heart?
Towards the heart
Where does gas exchange take place in the circulatory system?
Capillaries
Pulmonary ventilation (breathing)
Moving air into and out of lungs
Inhalation
Exhalation
Nasal cavity
Filter out dust and pollen from air
Sense of smell
Sound production
Pharynx
Throat
Connects oral and nasal cavities to the esophagus and trachea
Larynx
Sound production
Prevents food from going into your windpipe
Trachea and bronchi
Windpipe
Move air into and out of the lungs
Cilia
Keeps some particle out of lungs
Traps them and moves them back up to pharynx
Alveoli
Air sacs
Take up most of the surface are in the lungs
Respiratory system and homeostasis?
High CO2 stimulates more breathing in order to get rid of CO2
Low CO2 stimulates less breaking in order to maintain blood pH (acidity)
Major organs of the circulatory system
Heart
Blood
Blood vessels: arteries, capillaries, veins
Arteries
Carry blood from heart to tissues (to capillaries)
Capillaries
Where nutrients, chases and wastes are exchanged between blood and tissues
Veins
Carry bliss from tissues (from capillaries) back to the heart
Blood flow?
Heart>arteries> capillaries> veins> back to the heart
SA node
The heart’s natural peacemaker
Tells heart to start or stop beating (maintains heartbeat )
Villi and microvilli
tiny hair-like projections that increase nutrient absorption.
increase the surface area of the small intestine allowing more area for nutrients to be absorbed.
