180 



ANATOMY FOR NURSES 



[ClL\P. X 



Blood Vascular 

 System 



Location 



Structure 



Cavities 



Orifices 



SUMMARY 



Heart. 



Arteries — small arteries are named arterioles. 



Capillaries. 



^'eins — small veins are named venules. 



(Between lungs. 

 Behind sternum. 

 Above diaphragm. 



' Smooth lining on inside — Endocardium. 

 Muscle substance — Myocardium. 



I Fibrous portion. 

 „ j Yisceral. 



1 Parietal. 

 j Receives blood. 

 1 Thin walls. 



r Expels blood. Pulmonary 

 < artcn.'. 

 [ Thick walls. 

 Left j Receives blood. 



auricle \ Thin walls. 

 Left ven- ( Expels blood. Aorta, 

 tricle \ Yery thick walls. 



' Superior vena cava — returns 

 blood from upper portion of 

 Right body. 



auricle Inferior vena cava — returns 

 Right J blood from lower portion of 



heart 1 [ body. 



Auiiculo-ventricular orifice between au- 

 ricle and ventricle. 

 Right ven- j Pulmonary artery — carries 

 tricle 1 blood from heart to lungs. 



Right 

 heart 



Left 

 heart 



Right 

 auricle 



Right ven- 

 tricle 



