■749 



response of related rings, 807 

 response to stretch, 873 

 simulated, flow velocity curve, 822 

 tension-length curve, 801-802 

 thoracic 



arterial flow pulse in, 849 



blood flow in, 860 



circumference, 846 



distensibility modulus, 813 



mean peak flow, 846 



mean peak velocity, 846 



pressure-flow values, 823-824 



pressure-volume diagram, 873 



pressure-volume relationships, 812- 

 813 



stretch curves of, 802, 811 



stretch-release curves, 812 

 vaso vasorum in, 884 

 wall thickness, pulsatile changes in, 813 

 Aortic flow 

 axial 



pressure difference and, 847 



pulse in, 845 

 computer solution to, 847 

 curves, 82 1 



at rest, 773 



during sympathetic stimulation, 773 



in exercise, 77 2 



pressure and, 772 



stroke volume and, 82 1 

 ductus arteriosus and, 861 

 during exercise, 846 

 measurements in, 800 

 pattern, 820 



pressure changes and, 82 1 

 piessure relationship in values, 848 

 pulse in, 845 

 pulse, in stenosis, 859 

 relationships in, 849 

 see also Aorta; Cardiac output 

 Aortic regurgitation 

 aortic flows and, 1 556 

 backflow wave in, 860 

 brachial pulse contour in, 831-832 

 discussion of, 860 



left ventricular ejection pulse and, 860 

 flow-pressure gradient in, 860 

 myocardial ischemia, 1556 

 reversible aortic insufficiency, 1 556 

 Aortic stenosis 



aortic arch pressure and, 860 

 elevated ventricular pressure and, 1555 

 flow curve and, 860 

 flow pulse in, 859 

 stroke volume and compensatory 

 mechanisms, 860 

 Apresoline : see Hydralazine 

 Aramine : see Metaraminol 

 Arbacia egg 



filtration coefficients in, 992 

 Arfonad: see Trimethaphan camphor - 



sulfonate 

 Arrhythmias 



coronary blood flow and, [541 

 effectiveness of heart and, 11 04 

 Arterial disease 



chronic, vasoconstrictor mechanism, 



1237 

 obliterative, vascular dilatability and, 



1223 

 occlusive, pain in, 12 18 

 vasoconstrictor mechanisms in acute, 



1236 

 Arterial spasm 



basis for improvement, 1237 

 elastic recoil and, 1237 

 possible role of serotonin, 1237 

 Arterial system 



abnormal, communications, 1256 

 analogy approach, 844 

 experimental testing of, 850 

 frequency response, characteristics, 



848-849, 851 

 gas embolism, skin circulation and, 



1337 

 harmonics of, 818-821 

 harmonics, phase lag and, 817 

 low-pass filtered hydraulic supply, 847 

 nonpassive network, 843 

 physical properties, 841 

 pressure -pulse augmentation, 848-849 

 resonant frequency, 848-849 

 resonant-network model, 847, 850 

 resonant wave amplitude, 848-849 

 segmentation of, 843 

 size range, 841 



transient, response method, 844 

 transmission line model, 849, 851, 852 

 values of elements, 843 

 windkessel model, electrical analogue 

 of, 848 

 Arteries 



anatomy of central and peripheral, 880 



arcuate patterns, 905 



arrangement of longitudinal muscles in, 



878 

 arteriolar branch enlargement at ori- 

 gin, 896 

 branches, angles of, 896 

 changes after extirpation, 801 

 collateral, wall structure in, 1 268 

 contraction 



propulsion of blood and, 871 



relaxation of, and, 87 1 

 distensibility 



age and, 808, 875 



in living vessels, 804 



muscle contraction and, 806 

 elastic 



anatomy, 877 



characteristics of, 873 



discussion, 863-877 



distensibility, 873 



hysteresis in, 879 



interaction of elements, 876 



mechanical behavior, 878 



model of, 876 



pressure-volume diagrams, 879 



role of smooth muscle, 877 



schema of behavior, 876 



tension muscles in, 874 



visco-elastic and plastic behavior, 877 

 evaluation of status, 1223 

 excised, stretched rings, 802 

 from red pulp of spleen ampulla, 912 

 harmonics, factors affecting, 820 

 length and diameter changes of, 813 

 length changes, H 1 j 

 ligation, after sympathectomy, limb 



temperature and, 1264 

 major 



function of, 799 



histology, 804 



loss of blood pressure in, 801 



physiology, 799-838 

 mediation of reflex vasospasm, 1236 

 muscular 



anatomy, 877 



discussion, 872, 877-880 



hysteresis in, 879 



mechanical behavior of, 878, 879 



pressure-volume diagrams, 879 



schema of behavior, 879 



smooth muscle in, 880 



stress-relaxation in, 872 



structure, 877 

 muscle ring, response to loading, 1084 

 nutrient 



ligation, marrow infarction and, 1658 



physiology, 1677 

 peripheral 



pulse contours, 828 



vascularization of wall, 885 



vasa vasorum of, 885 

 precapillary branch, camera-lucida 



drawing of, 898 

 pressure-volume diagram, 873, 879 

 ratio of radius to thickness, age and, 876 

 resonance in, 826 



ring and longitudinal muscle arrange- 

 ment, 878 

 ring muscles of, 873 

 spasm of, myogenic factor, 1236 

 spontaneous rhythmical contractions, 



898 

 standing waves in, 826 

 stretch 



age and, 876 



hysteresis loop, 802 

 tension muscles of, 873 

 valves, structure, 781 

 vascular tone, source of, 1409 

 vasa vasorum in, 885 

 wall thickness of, 812 

 Arterioles 



arcuate systems of, 896 

 identification of, 909 

 receptor sites for blood flow control, 949 

 terminal, contractions in, 899 



