496 PEACTICAL PHYSIOLOGY 



SCHEDULE OF EXPERIMENTS. 



The following schedule of experiments on mammals is for the con- 

 venience of students of the Western Reserve University. All animals 

 experimented on must be kept under deep anaesthesia. The class is 

 divided into groups of four for this work. Each lesson occupies four 

 hours, one of which is devoted to a conference on the results of the 

 experiments. 



1. Proofs of the circulation of the blood (Chap. XXX.), omitting the 

 excision of the heart. 



Introduce cannula in carotid and record mean arterial pressure 

 (Chap. XXXV.). Kill animal and make a careful dissection of 

 vagus nerve and sympathetic chain. 



2. Demonstrate that the mean arterial pressure depends on the 

 pumping action of the heart (Fig. 110 and Fig. 231) and on the peri- 

 pheral resistance (cut cervical spinal cord). 



3. Record arterial and venous pressures simultaneously (Chap. 

 XXXIV.), and study effect of the conditions enumerated on p. 128. 



3'. Record aortic and intracardiac pressures by Hiirthle's and Fick's 

 manometers (Chap. XXXIX. advanced course). 

 (N.B. 3 and 3' are done alternately by the groups.) 



4. Demonstrate the effect of respiration on the blood pressure (Fig. 

 109). Produce asphyxia (a) by clamping trachea, (fl) by injecting curare. 

 Do this with vagi intact and vagi cut (Chap. XXXV.). (Have respira- 

 tory bellows ready.) 



5. Demonstrate vaso-motor fibres in cervical sympathetic of rabbit 

 (Chap. XXXIII.). Study action of depressor nerve in the same animal 

 (Chap. XXXV.). 



6. Demonstrate presence of vaso-motor fibres in sciatic (lectures and 

 Chap. XLI. advanced). 



6'. Demonstrate vaso-motor fibres in renal nerves ; study conditions 

 influencing ureter outflow (Chap. XLI. advanced). 



7. Demonstrate the station of synapsis for the vaso-motor fibres to 

 upper limb (Chap. XLI. advanced, last paragraph ; also Chap. XLIII., 

 action of nicotin). 



8. Demonstrate pressor fibres in (a) sciatic, (/?) vagus. 

 Demonstrate the effect of gravity on the blood pressure of the dog 



(Chap. XXXV.). 



9. Demonstrate the effect of suprarenal extract and of a nucleo- 

 albumin solution on the blood pressure (Fig. 235). Experimentally 

 explain the action of each. 



10. Estimate the velocity of circulation by methylene blue experi- 

 ment on rabbit, and by Ludwig's stromiihr in dog (Chap. XXXI.). 



