CONTENTS xv 



PAGE 



Anaphylaxis. Coagulation of blood. Cause of coagulation. Use of co- 

 agulation. Source of blood-fibrin. Thrombin. Antithrombin. Throm- 

 boplastic substance. Methods of hastening or retarding coagulation. 

 Bleeders. Transfusion 305 



CHAPTER XIX 



THE ANATOMY OP THE HEART AND BLOOD VESSELS 



General statement. Position of heart. Membranes of heart. Cavities 

 of heart. Anatomy of heart. Valves of heart. Arterial system. Capil- 

 laries. Veins. Pulmonary circulation. Course of blood. Portal circula- 

 tion. Arterial and venous blood. Structure of vessels 322 



CHAPTER XX 



THE ACTION OF THE HEART. THE REGULATION OF THE HEART-BEAT 



Beat of the heart. Cardiac impulse. Events of a cardiac cycle. Use 

 of papillary muscles. Sounds of heart. Action of heart-valves. Effects 

 of valvular insufficiency. Function of auricles. Work done by heart. 

 Relation of nerve and muscle elements within heart. Physiological pe- 

 culiarities of heart. Passage of beat over heart. Neurogenic and myogenic 

 theories of beat. Nature of automatic rhythmicity. Extrinsic nerves of 

 heart. Inhibitory and augmentor centers ' 339 



CHAPTER XXI 



THE CIRCULATION OF THE BLOOD. BLOOD PRESSURE AND BLOOD VELOCITY. 



THE PULSE 



Circulation seen in frog's web. Resistance to blood-flow. Conversion 

 of intermittent into continuous flow. Arterial pressure. Weber's schema. 

 The pulse. Blood-pressure in man. Rate of the blood-flow. Secondary 

 factors affecting the circulation. Aspiration of the thorax. Proofs of the 

 circulation of the blood 355 



CHAPTER XXII 



THE VASOMOTOR MECHANCISM. SLEEP. THE LYMPHATIC SYSTEM 



Distribution of blood among various parts of Body. Nerves of blood- 

 vessels. Vasoconstrictor nerves. Vasoconstrictor center. Control of 

 vasoconstrictor center. Depressor nerve. Taking cold. Vasodilator 

 nerves. Vasodilator center. Relation of vasomotor tone to cerebral ac- 

 tivity. Sleep. Adrenin. The lymphatics. Structure of lymph vessels. 

 Lymph-nodes. Tonsils and adenoids. Movements of lymph. Lympha- 

 gogues 373 



