high activity inhale uses accessory muscles & exhale muscles contract
what is tital volume VT
volume of air moved in normal resting breath vt=500ml
numbe rof breaths per min
resp. minute volume
air moved per min tidal volume x respiratory rate
anatomic dead space
air that never reaches alveoli (vd)=150ml
what is daltons law
each gas in a mixture of gasses making pressure. as if not other gasses were present. This will atribute to atmosphere pressure relating to abundunce.
what is partial pressure
the pressure of specific gas in a mixture
atmospheric air is made up of what
N2,02,H20,C02 each of these gasses have there own pressure ex:pressure of N2 not affected by other gasses
the greater the atmosphere pressure....
the greater the affect on the atmosphere
1pressure:increase pressure=increase gas in a solution
decrease pressure =decrease gas in a solution
2gas solubility solubility coefficient(easier to get co2 in solution than 02)
how does nitrogen in blood affect the body
will go into blood during pressure increase during suba diving. when scuba diving you must slowly ascend to prevent this.
external resparation is what
internal resp is?
how is oxygen transported
1)1.5%dissolved in plasma: 98.5% is bound to hemoglobin
the higher the po2
the more 02 bound to hemoglobin
hemoglobins are usually what percent saturated
50percent with 2 02 bound
how does hemoglobin act as a buffer
when ph lowers it takes in h+ but when ph is higher it releases h+
how does temp affect resp
cellular demand increases and amount of 02 for metabolic and cellular resparation as temp increases so does amount of 02 released. with decreased temp 02 release is decreased and more 02 is on hemoglobin
what are the 3 methods of ntransport for carbon dioxide
1 dissolved in plasma 2bound 2 hemoglobin3bicarbonate method
what is the Co2 transport bi-carbonate method
Co2+h2O-> carbonic acid(h2C03)->hc03-+ h+
cATalized by ca=carbonic anhydrase,bicarbonate increased h+ cause ph to decrease some of the h+ binds to hemo-globin this buffers ph
chloride shift is?
cl-enters rbc hco3 leaves rbc and is able to act as buffer
what are the rep center?
oblongata and pons
what s drg
is active with every breath using diaphragm and external inter costals(medulla oblongata)
what is vrg
active only with forced breathing uses forced accessory muscles and diaphragm and external intercostals(medualla oblangata aka resp center