336 QUESTIONS. 



effected ? By what arrangement is the chyle, when mixed with the 

 blood, circulated through the system, supplying nourishment wherever 

 it goes ? Describe the heart ; the arteries ; the veins. 



How is the heart divided into parts and cavities? What are the 

 names of the four cavities ? Which side of the heart receives the blood 

 from the body? Where does it propel the blood ? Where is the blood 

 conveyed from the lungs ? Which side of the heart acts in sending 

 the blood to the different parts of the body ? Describe the shape and 

 position of the heart. What is the apex ? Which way does it incline ? 

 Why has the heart been supposed to lie entirely on tfie left side ? Of 

 what is the main body of the heart composed ? Describe them. Which 

 is the most powerful ventricle ? Why ? Where are the auricles situ- 

 ated, and how do they appear? 



Where does the blood receive the new supply of chyle ? With 

 what other veins does the subclavian vein unite, on its way to the 

 right auricle ? Where does the blood from the lower parts of the body 

 unite with that from above, in order to be sent to the lungs ? What'are 

 the two large veins or trunks that convey the venous blood from above 

 and below, to the heart, called ? Into what cavity of the heart do they 

 pour the blood ? When this cavity is contracted, where is the blood 

 expelled ? What prevents its flowing back again into the right auri- 

 cle ? When the right ventricle contracts, to what does it propel the 

 blood ? What is the duct called which conveys the blood from the right 

 ventricle to the lungs ? Does it convey blood that has come from the 

 arteries or from the veins ? Is it, then, strictly speaking, an artery or a 

 large vein ? What prevents the blood flowing back from the lungs 

 through the pulmonary artery ? 



(P. 25.) What is the color of the blood, in the right side of the 

 he%rt ? What is the structure and extent of the lungs ? How is the 

 blood distributed through the substance of the lungs ? What change 

 does it undergo in the lungs ? 



Where is the blood conveyed after being exposed to the action of air 

 in the lungs ? How? Why is the left ventricle so much more power- 

 ful than the right? What is the channel through which the blood is 

 thrown from the left ventricle to all parts of the body ? Describe the 

 course of the aorta, and name its branches. 



What are the capillary vessels? What becomes of the blood after 

 being thus distributed by the capillaries to the remotest parts of the 

 system ? Describe the course of the veins. What change takes place 

 in the blood in the capillaries? What is the supposed cause? 



(P. 26.) What is the brain ? How is the head supplied with nerves 

 from it? How are the trunk and lowtr extremities supplied? Are the 

 brain, the spinal marrow, and the nerves, to be considered as one 

 extended organ, or different and distinct. ? 



