Syllabus of a course of lectures on physiology delivered at Guy's Hospital.

  • Pye-Smith, Philip Henry.
Date:
1885
Catalogue details

Licence: Public Domain Mark

Credit: Syllabus of a course of lectures on physiology delivered at Guy's Hospital. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    shorter; friction less;] walls thinner. Blood-pressure lower. Velocity slightly less (?). No auxiliary forces. Systole, diastole, movements of valves, sounds, all syn- chronous on both sides of heart. Valve of ingress tri- not bicuspid; consequent safety-valve action ; King's moderator- band ; physiological tricuspid regurgitation. Change of form of Heart as a whole in systole ; apparent elongation ; no real locomotion ; Cardiac Impulse. Rota- tion, tilting and hardening of heart. Lengthening and un- twisting of aorta and pulmonary artery when distended. Recoil from unopposed exit of blood as in a gun or a turbine. Sequence of events in a complete cycle of the heart's action. {Table 18.) Regulation of the Circulation by the nervous system. Acts only on muscular fibre, (a) of heart, (b) of arteries. (a) Cardiac innervation: in frog: in mammals. Intra- cardiac ganglia. Rhythmical action : automatic, not reflex. (Exceptional rhythmical contraction of non-ganglionic part of ventricle.) Pulsation of excised heart. Effects of heat, cold, galvanic and faradaic stimulation. Regula- tion by cerebro-spinal centres. Vagus : inhibitory branches. Stimulation of R. vagus, of L., of both; mechanical, chemical, electrical, reflex : latent period : effect of section of vagi: subsequent effect on beat of vagus-stimulation. Accelerator nerves of heart; section and stimulation of; relation to temperature. (b) Vaso-motor nerves.—Cervical sympathetic, splanchnic, brachial, sciatic. Effect on bloodvessels, on the parts supplied, on the blood pressure in front and behind con- striction, on B.P. elsewhere, on the pulsation of the heart. Mutual relation between heart-beat and arterial B.P. and between B.P. and heart. Depressor nerves : other sensory nerves. Vaso-dilator nerves. Capillary contraction and dilatation (?). Effects, on heart-beat and on blood pressure: of dividing Vagi, of stimulating them; dividing accelerator nerves, and
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