ex sci 2
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total lung capacity
- the sum of the vital
- capacity and the residual volume
partial pressure definition
the individual pressures from each gas in a mixture.
avg or approx hemoglobin concentration for male
about 15 (14-18)
about 13.5 (12-16)
definition of cardiac cycle
- all the mechanical and electrical events that occur during one heartbeat.
- Diastole is when chambers fill with blood.
- Systole is when the ventricles contract and
- expel blood into aorta and pulmonary arteries.
definition of cardia output
- the total volume of blood
- pumped by the ventricle per minute. Product of HR and SV.
diaphram and intercostal muscles…resting
diaphram intercoastal and abdominal acount for 11% of total oxygen consumed during exercise
15% cadiac output
2% resting respiratory
know what stroke vol is
during systole most, but not all blood in the ventricles is ejected. Volume of blood pumped per beat.
Definition of arteries
- large muscular, elastic, conduit vessels for transporting blood away from the heart
- to the arterioles.
Know what aorta is
- the major artery transporting blood from the left ventricle to all regions of the body
- and it branches into smaller arteries that become smaller and turn into
pumping pressure. Highest pressure in the artery that occurs during ventricular systole.
passive pressure: lower # represents the lowest pressure in the artery
Resting heart rate of an avg person
Heart rate of trained athlete
- oxygen content drops:
- the difference in oxygen content btwn atrial and venus blood in tissue level.
Abnormally fast or deep respiration, which results in the loss of carbon dioxide from the blood, thereby causing a fall in blood
Difficulty in breathing, often associated with lung or heart disease and resulting in shortness of breath.
Toal volume of blood pumped by the ventricle per minute. Redistribution of blood to the working muscles with exercise.
What is the % of cardiac outputof the muscles? UP TO 85%
Est Max HR-to point of exhaustion.
220-age (sedentary adult)
- Working above aerobic capacity. Cant get oxygen
- fast enough
normal % for hermaticrate
Partial Pressure oxygen exchange
- PO2 standard: 159
- PO2 when inhale into alveoli 105
- enters pulmonary capillaries w po2 of 40
- oxygen across the respiratory membrance is typically 65
- deoxygenated blood enters 40
- po2 in vein is 100
- if transporting 1 1/3 ml oxygen how much oxygen
- is transported for a male and female….take value and mult. by 1 1/3. If hemoglobin
- is 15…oxygen transfer is 20
c02 controls acid base balance
- Calc vo2 given ve and true o2. Vo2 =ve * true
- 02. True 02=inspired 02 –expired 02. O2 inspired =21% (not 20.93)
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