PHYL2001 Study Guide - Final Guide: Ejection Fraction, Simple Squamous Epithelium, Pulse Pressure
PHYL2001 Revision CNS 2
Microcirculation:
Artery: brings blood away from ventricles !
Arterioles: more smooth muscle, regulate BP by vasoc/d = controlling blood flow!
Capillaries: simple squamous: allow exchange!
Veins: have valves, distensible!
Pulse pressure:
= SBP - DBP!
MAP:
-average arterial pressure over cardiac cycle!
VR
= blood returning to the heart!
-5-5.5L!
CO
= amount of blood pumped out of heart/min (one side - usually left side)!
HR
= heart beat per min!
"
Tachycardia: !
-above 100bpm (lesser EDV = lesser VR and lesser distensibility in ventricle)!
Bradycardia: !
-below 60bpm!
SV:
= volume blood pumped out by one ventricle per contraction!
-70ml!
= EDV - ESV!
Ejection fraction:
-SV/EDV!
-65%!
What volumes relates to ventricular volume
-EDV!
-ESV!
-SV!
-Ejection fraction!
@ rest:
-PNS innervation!
