PHYSIOL 335 Lecture Notes - Lecture 7: Vascular Resistance, Aortic Arch, Stroke Volume
7 Nov 2016
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Physiology 335 lab 7: mabp regulation: driving force that allows blood to perfuse all tissues, one of the most important physiological parameters to maintain near a set value. Variables to maintain mabp near set point: heart rate (hr) Ml/min: total peripheral resistance (tpr, end-diastolic volume (edv, end-systolic volume (esv) Equations in a systemic circuit: mabp = co x tpr, co = (cid:3014)(cid:3002)(cid:3003) (cid:4666) (cid:4667, co = hr x sv, sv = edv esv, tpr is inversely proportional to r. Equations in a single vessel: f = , r = 8(cid:3013)4. Navigating the diagram on page 68 of lab manual: alpha, beta, gc receptors, aortic arch and carotid artery. Communicate with autonomic ns (in the medullary cardiovascular centers) Communicate with heart: together, the baroreceptors, the autonomic ns, and the cardiovascular system help maintain mabp in homeostatic balance in short term (like in seconds) this process is called the baroreceptor reflex pathway.
