College: Third year
lung change in internal volume of the bell jar (thoracic cage)
lung change in the size of the balloons (lungs)
lung change in direction of air flow
under what internal conditions does air tend to flow into the lungs?
under what internal conditions does air tend to flow out of the lungs? Explain why
activation of the diaphragm and the external intercostal muscles begins inspiratory process. What effect does contraction of these muscle have on thoracic volume and how is this accomplished?
What was the approximate increase in diameter of chest circumference during a quiet inspiration?
during forced insiration?
what temporary physiological advantage is created by the substantial increase in chest circumference during forced inspiration?
The presence of a partial vacuum between the pleural membranes is integral to normal breathing movements. What would happen if an opning were made into the chest cavity as with a pressure wound?
How is this condition treated medically?
Volume of air that can be inspired forcibly after a normal inspiration
would your vital capacity measurement differ if you preformed the test while standing? While lying down? Explain
Which respiratory ailments can respiratory volume tests be used to detect?
respiratory rate and depths of respiratory peaks observed: talking
resp. rate and depths of resp. peaks observed: Yawning
resp. rate and depths of resp peaks observed: Laughing
resp rate and depths of resp peaks observed: Concentrating
resp rate and depths of resp peaks observed: Swallowing water
resp rate and depths of resp peaks observed: coughing
resp rate and depths of resp peaks observed: Lying down
resp rate and depths of resp peaks observed: running in place
After breathing quietly and taking a deep breath which you held, was your urge to inspire or expire
Explain results of breathing relexes
Why does hyperventilation produce apnea or a reduced respiratory rate?
Why does rebreathing air produce an increased respiratory rate?
What was the effect of running in place (exercise) on the duration of breath holding? Explain
effect of respiration on circulation, explain data
where are sensory receptors sensitive to changes in O2 levels in the blood located?
What is the primary factor that initiates breathing in a newborn infant
blood Co2 levels and blood ph are related. When blood CO2 levels increase, does ph increase or decrease?
Which if any of the measurable respiratory volumes would likely b exagerrated in a person who is cardiovascularly it such as a runner or swimmer
which if any of the measurable resp volumes would likely be exaggerated in a person who has smoked a lot for 20 yrs
How successful was the lab buffer (pH7) in resisting changes in pH when acid was added?
How successful was the buffer in resisting changes in pH when additional aliquots 3 more drops of the acid and base were added to the original samples?
Expllain how the carbonic acid bicarbonate buffer system of the blood operates?
H2CO3 a weak acid remains undissociated at physiologic pH or acid pH. However, if the pH starts to rise, H2CO3 dissociates and liberates H, which acts to lower the pH. HCO3(bicarbonate ion) is the alkaline reserve; it acts to tie up excess H into the H2CO3 when the enviornment gets too acidic. Since it is a weak base, it doesnt unction under physiologic or alkaline conditions
what happened when the CO2 in exhaled air mixed with water