# biolab140.txt

 The flashcards below were created by user itzlinds on FreezingBlue Flashcards. The minimum arterial blood pressure during ventricular relaxation is called: mean arterial pressure diastolic pressure hydrostatic pressure pulse pressure systolic pressure diastolic pressure Which of the following arteries is most commonly used to measure blood pressure? dorsal pedal a. radial a. common carotid a. brachial a. femoral a. brachial a. Heart rate (HR) x Stroke volume (SV) = _________. End diastolic volume (EDV) Cardiac output (CO) Mean arterial pressure (MAP) Pulse pressure (PP) Total peripheral resistance (TPR) cardiac output (CO) Mean arterial pressure = diastolic pressure + 1/3_________. systolic pressure stroke volume cardiac output heart rate pulse pressure pulse pressure When blood pressure increases, the baroreceptor firing rate _________. increases decreases is unaffected increases During which two phases of the cardiac cycle are all heart valves closed? isovolumetric contraction and isovolumetric relaxation ventricular filling and ventricular ejection ventricular ejection and isovolumetric relaxation ventricular filling and isovolumetric contraction isovolumetric contraction and isovolumetric relaxation When blood pressure in the right ventricle is > pulmonary arteries, the semilunar valves are open. True False true Ventricular depolarization is represented by the ______ on an ECG. T wave H band P wave M line QRS wave QRS wave list the definition/descripition, units, and how to calculate cardiac output: description: the amount of blood ejected by each ventricule in 1 minuteunits: mL/mincalculate: HR (beats/min) X SV (mL/beat) = CO (mL/min) list the definition/description, units, and how to calculate stroke volume: description: ventricles do not expell all (130 mL) at EDV, the actual amount ejected (about 70 mL) is the stroke volumeunits: mL (mL/beat)calculate: EDS - ESV = SV list the definition/description, units, and how to calculate pulse pressure: description: the maximum stress exerted on small arteries by the pressure pressure surges generated by the heart, average pressure for the whole bodyunits: mm Hgcalculate: systolic P - diastolic P = pulse pressure list the definition/description, units, and how to calculate mean aterial pressure: description: a measure of stress on the blood vessels obtained at several intervals (say every 0.1 second) throughout the cardiac cycleunits: mm Hgcalculate: diastolic P + pulse P/3 = MAP list the definition/description, units, and how to calculate systolic pressure: description: peak arterial BP attained during ventricular contractionunits: mm Hgcalculate list the definition/description, units, and how to calculate diastolic pressure: description: the minimum arterial BP occuring during the ventricular relaxation between heartbeatsunits: mm Hg list the definition/description, units, and how to calculate heart rate: description: each beat of the heart produces a surge of pressure that can be felt by palpating a suerpficial artery with fingertipsunits: BPM (beats per minute)calculate: counting # of pulse for 15 seconds then multiply by 4 to get BMP *taken at radial artery or common carotid artery List at least 5 arteries of the body that lie close enough to the skin surfaces so that they can be used to take a pulse: superficial temporal a.facial a.common carotid a.radial a. brachial a. femoral a. popliteal a. posterior tibal a. dorsal pedal a. what is the name of the instrument used to measure blood pressure: sphygmomanometer sphyg - mom an - o meter stethoscope what is the most commonly used artery to measure blood pressure? brachial artery if you have a blood pressure of 130/75, what does the 75 represent? diastolic pressure what is the clinical threshold for high blood pressure in young adults? 140/90 during the measurement of blood pressure, what is measured when the first sound is heard: systolic or diastolic pressure? systolic Calculate the pulse pressure and MAP under each condition: HR: 52 bmp systolic P: 102 mm Hg diastolic P: 52 mm Hg pulse pressure: 50 mm HgMAP: 69 mm Hg Calculate the pulse pressure and MAP under each condition: HR: 56 bpm systolic P: 114 mm Hg diastolic P: 58mm Hg pulse P: 56 mm HgMAP: 77 mm Hg Calculate the pulse pressure and MAP under each condition: HR: 56 bmp systolic P: 106 mm Hg diastolic P: 56 mm Hg pulse P: 50 mm HgMAP: 72 mm Hg Calculate the pulse pressure and MAP under each condition: HR: 92 bmp systolic P: 138 mm Hg diastolic P: 71 mm Hg pulse P: 67 mm HgMAP: 93 mm Hg if your stroke volume was 70 mL/beat, while seated what would her cardiac output be with a heart rate of 60 BMP: CO = 60 beat/min X 70 ml/beat = 4200 mL/min or 4200 ml/min x 1L/1000 mL = 4.2 L/min describe how your labmates blood pressure and heart rate changed in response to body position( lying down - sitting- standing): lying down: after lying down for 3 mins the BP and HR loweredsitting: immediately after sitting up from lying, the BP and HR elevatedstanding: after standing for 2 mins the BP and HR lowered slightly from the resting measurements outline the physiologicial mechanism underlyng the change in heart rate and blood pressure in response to body postion ( ie, how did changes in baroreceptor firing, sympathetic activity, parasympathetic activity, and vasomotor tone contribute to HR and BP) lying: BP to brain - decrease > decrease carotid sinus stretch > baroreceptor firing - decrease > SNS - increase (to stimulate a higher BP)/ PSNS - decrease > (2 pathways) 1. > Heart rate - increase > Cardiac output - increase2. > vasoconstrict (more resistance to elevate BP) > TPR - increase * both lead to increase in BP* Describe how you labmates blood pressure and heart rate changed in respone to excercise: increase in BPincrease in HR Outline the physiological mechanism underlying the change in heart rate and blood pressure in response to excerise: excerise > SNS - increase/ PSNS- decrease > heart rate - increase (response to SNS)> cardiac output - increase > MABP - increase>vasoconstrict (to general organs/maintance, response to PSNS) > venous return - increase > EDS - increase> vasodialate (to skeletal muscles, response to PSNS) name the 1st phase of the mechanical cycle of the heart, indicate which heart valves are open and closed during each phase, and state whether each phase is part of systole or diastole: Name: AV valves (open/closed) SL valves (open/closed) diastole/systole Name: ventricular fillingAV valves: openSL valves: closeddiastole name the 2nd phase of the mechanical cycle of the heart, indicate which heart valves are open and closed during each phase, and state whether each phase is part of systole or diastole: Name: isovolumetric contractionAV valves: closedSL valves: closedsystole name the 3rd phase of the mechanical cycle of the heart, indicate which heart valves are open and closed during each phase, and state whether each phase is part of systole or diastole: Name: ventricular ejectionAV valves: closedSL valves: opensystole name the 4th phase of the mechanical cycle of the heart, indicate which heart valves are open and closed during each phase, and state whether each phase is part of systole or diastole: name: isovolumeteric relaxationAV valves: closedSL valves: closeddiastole which heart sound is produced when the semilunar valves in the heart close? dub (S2) which heart sound is produced when the atrioventricular valves in the heart close? lub (S1) when blood pressure in the artria is > ventricles, are the AV valves open or closed? open when the blood pressure in the artria is < ventricles, are the AV valves open or closed? closed when blood pressure in the pulmonary arteries is < the right ventricle, are the SL valves open or closed closed when the pressure in the aorta is > the left ventricle, are the SL valves open or closed? open during which phase of the cardiac cycle is the pressure in the heart the highest? ventricular ejection during which phase of the cardiac cycle is the pressure in the heart lowest? what electricla event is represented by the P wave: atrial depolarization what electrial even is represented by the QRS wave: ventricular depolarization what electrical event is represented by the T wave ventricular repolarization why is atrial repolarization not seen in an ECG? it is obsured by QRS wave during which phase of the cardiac cycle does artrial contraction take place? ventricular filling Authoritzlinds ID134498 Card Setbiolab140.txt Descriptioncardiovascular physiology Updated2012-02-13T17:07:00Z Show Answers