Respiratory system Flashcards
Concerned of the respiratory system?
Is mainly concerned with gas exchange, but parts of the respiratory system concerned to the Sense of Smell , taste , phonation and with excretion of water through exhaled air
What are the function if the respiratory system ?
it has 2 main function
1- conducting portion Transports air
2-respiratory portions carries out gas exchange
Goblet cells extend to the _____ (respiratory/terminal) bronchioles, whereas pseudostratified ciliated cells extend to the _____ (respiratory/terminal) bronchioles.
terminal / respiratory
regions of the nasal cavity ?
1- nasal vestibule
2- respiratory region
3- olfactory region
What are in the nasal cavity ?
nasal conchae Which we have Superior, middle and inferior and they are extend medially across the nasal cavity , separating it by superior, inferior & middle meatus and a spheno-ethmoidal recess
Cartilage is present only in what two components of the respiratory tree?
Trachea & bronchi
Functions of the respiratory?
To ensures that all tissues receive O2 that they need and can dispose CO2 that produced by Cells , These are the major Functions
the minor functions Are
1- Reserving volume back up for circulation
2- Filtering the Microparticles
3- Hormonal activation of angiotensinogen
What is about the blood ?
Blood has intrinsic capacity to pick up the O2 and lose CO2 … in RBCs we have Hb that contains 4 heme which can bind to 4 O2 but The Co2 can’t bind to the Heme but instead they bind to the polypeptide parts of Hb
what is the atmospheric pressure ?
Atmospheric pressure = Force / unit area .. Pa= Newton (N) / M2
In medicine we use the Kpa
And also for pressure we use mmHg
1 Kpa= 7.5 mmHg
1 mmHg = 0.133 Kpa
1 standard atmosphere = 760 mmHg = 101.3 kpa
also torr can use for pressure
What about boyle’s law ?
T and n are constant , when the pressure increase the volume will be reduced,,, inversely proportional
what about charle’s law ?
At a constant Pressure , when the T
increases so the Volume will be increase
what about the dalton law ?
Px= P.Fx
but gas mixtures always in contact with water so
px= (pB-47) . Fx
47 is vapour pressure or vapour water
Functions of the respiratory?
To ensures that all tissues receive O2 that they need and can dispose CO2 that produced by Cells , These are the major Functions
the minor functions Are
1- Reserving volume back up for circulation
2- Filtering the Microparticles
3- Hormonal activation of angiotensinogen
What is about the blood ?
Blood has intrinsic capacity to pick up the O2 and lose CO2 … in RBCs we have Hb that contains 4 heme which can bind to 4 O2 but The Co2 can’t bind to the Heme but instead they bind to the polypeptide parts of Hb
what is the atmospheric pressure ?
Atmospheric pressure = Force / unit area .. Pa= Newton (N) / M2
In medicine we use the Kpa
And also for pressure we use mmHg
1 Kpa= 7.5 mmHg
1 mmHg = 0.133 Kpa
1 standard atmosphere = 760 mmHg = 101.3 kpa
also torr can use for pressure
