280 



LECTURE XII. 



Of the Blood-vessels and their action Circulation of 

 the Blood Importance of a knowledge of the Struc- 

 ture of Vessels Views regarding the Structure of the 

 Capillaries Protoplasm Walls of Capillary Vessels 

 Bioplasm of the Capillaries Action of the Tissue 

 of the Capillary Walls Action of the Bioplasm Of 

 the Arteries Of the Veins Examination of the 

 Arteries and Veins Action of the Contractile Fibres 

 of Vessels Distribution of Nerves to Arteries Nerves 

 to Veins Of the Nerves distributed to the Capil- 

 laries Central Origin and Connections of the Nerves 

 to the Capillaries New Observations on the Nerves 

 of the Capillaries of the Bat's-wing Method of de- 

 monstration Action of the Nerves of the Capillary 

 Vessels Are they Sensitive, or Motor, Nutritive, or 

 Secretory ? Their Connection with Ganglia Phy- 

 siological Experiments Of the Self-acting Mechanism, 

 by which the Supply of Blood to the Tissues is Regu- 

 lated Action of Nerve Fibres in Acute Inflammation 

 Alteration of Nerve Fibres in Chronic Diseases 

 Degeneration of Vessels. 



292. Circulation of the blood in the vessels. The 



nutrition and maintenance, as well as the growth, of 

 every tissue in the body of vertebrate animals are 

 dependent entirely upon the distribution of a due 

 supply of healthy blood in their immediate neigh- 

 bourhood. The blood does not touch the tissue to 

 be nourished, but fluid transudes through the thin 

 walls of the vessels along which the blood is pro- 

 pelled. This is imbibed by the tissue, and being kept 

 constantly moving in its interstices, preserves the 



