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- Cocaine use causes vasoconstriction. Is this likely to increase or decrease blood pressure, and why? How might cocaine use affect respiration rate?Which of the following would be normal responses to hypercapnea? (select all that apply) Smaller tidal volumes Increased frequency Increased tidal ventilation Decreased pulmonary blood flowHelp me please
- During hyperventilation, CO2 is “blown off,” and CO2 levels in theblood decrease. What effect does this decrease have on blood pressure?Explain. What symptoms do you expect to see as a result?MAP of the pulmonary system is 21 mmHg, Left Atrial Pressure is 3mmHg, and Flow is 5625ml/min. What is the resistance of the pulmonary circuit? Would this be higher or lower resistance than the systemic circuit? Why do you think so?(B) Fill in the blanks (7 marks). Normal value (with unit) in a healthy individual Resting Stroke Volume Resting Cardiac Output Resting Mean Arterial Pressure Resting Alveolar Ventilation Rate pH of the Arterial Blood Arterial Po2 mmHg Arterial Pcoz mmHg
- Breathe deeply and vigorously, with mouth open for 1 ½ to 2 minutes. Is there any great urge to breathe immediately following this period of hyperventilation? Hold a paper bag firmly over your nose and open mouth while breathing deeply and vigorously for 2 minutes. Is there any great urge to breathe immediately following this period of hyperventilation?With atherosclerosis, what happens to resistance and flow? O 1) resistance decreases, flow increases 2) resistance and flow decrease 3) resistance and flow increase O 4) resistance increases, flow decreaseshow does the chemoreceptor reflex work to compensate the increased arterial PCO2?
- What is the functional residual capacity of a subject with the following volumes? Vital capacity- 4250 Expiratory reserve volume- 880ml Inspiratory reserve volume 2900ml Residual volume- 1050mlNote in part (a) that the normal resting value on this pressure–frequency curve is on the steepest, center part of the curve. What is the physiological significance of this?A patient with pulmonary hypertension has a pulmonary systolic pressure of 60 mmHg and a pulmonary diastolic pressure of 12 mmHg. His cardiac output is 4 L/min. What is his pulmonary vascular resistance in mmHg.L-1.min? Round to the nearest integer value.
