220 



HITCHCOCK'S ANATOMY 



extremities. This relation of 

 parts is called Inosculation or 

 Anastomosis. This arrange- 

 ment gives a plentiful supply 

 of blood to every part of the 

 body, if, by wound or pressure, 

 the ordinary channel of blood 

 to any part should be ob- 

 structed or completely closed 

 up. Inosculation is mos2 

 abundant in the veins and su- 

 perficial arteries, since these 

 are most liable to be thus im- 

 peded. 



383. The Blood — Micro- 

 scopic Structure — Plasma 

 or Serum — Re d Corpuscles — 

 White Corpuscles — Propor- 

 tion of one to the other.— 

 The blood of the human sys- 

 tem amounts to about eighteen 

 pounds, or nearly ten quarts. 

 Is has a specific gravity a lit- 

 tle greater than that of water, 

 is of a bright scarlet color if 



The Arteries and Deep-seated Veins on ° 



the Back of the Leg. i, Popliteal Vein, drawn from an artery, or dark 



2, Popliteal Arterv. 3, 4, Vein and Artery ^^j. *r» 4- n lr~ n « 



in their relative Position on the Back of P U1 T le ll taken fl0m a Vem > 



the Knee-Joint. 5, Popliteal Vein on the with a taste slightly alkaline, 



inner Side of the Joint. 6, Popliteal Ar- - 



tery without and beneath it. 7, Extremity and an odor resembling that 



of Saphena Minor Vein. 8, 9, Internal Ar- 

 ticular Vessels, both Arteries and Veins. 10, 11, External Articular Vessels, both Ar- 

 teries and Veins. 12, Junction of the Peroneal and Posterior Tibial Veins. 13, A Ven- 

 ous Branch from the Anterior Tibial Vein. 14, A Vein from the Gastrocnemius. 15, 

 Anterior Tibial Artery coming: through the Interosseous Ligament. 16, Posterior Tibial 

 Artery. 17, Its two Vena) Comites. 18, Peroneal Artery. 19, Its two Venae Comites. 

 20, Vessels on the Heel. 



3S2. What is meant by Inosculation or Anastomosis ? What is the service of anasto- 

 mosis ? In what vessels is it most abundant ? 383. How much blood is ther« in a hu- 

 ma» adult? State its color and odor. 



