The Heart Worksheet

1. 
   All vertebrates have what type of circulatory system?
   Closed Circulatory system
2. 
   How does the circulatory system maintain homeostasis?
   It maintains homeostasis through water and electrolyte transport, fluid volume control, and regulation of pH and of body temperature.
3. 
   Name 4 functions of the circulatory system.
   Transport dissolved nutrients to all the body cells
   It carries hormones which help regulate certain body functions
   It transports gasses (oxygen to the cells, Carbon dioxide away from cells)
   Transports antibodies that contribute to the body’s immunological responses and produces some of them
4. 
   What are blood vessels that carry blood away from the heart called?
   Arteries
5. 
   What are blood vessels that carry blood to the heart called?
   Veins
6. 
   What is the sac that surrounds the heart called?
   Pericardium
7. 
   What is the muscular portion of the heart called?
   Myocardium
8. 
   What is the lining of the myocardium called?
   Endocardium
9. 
   What is the name of the upper cavities of the heart? The lower cavities?
   (Pericardial cavity- Serous,Fibrous )
   Upper cavities- Atria
   Lower cavity- Ventricles
10. 
    What veins carry blood to the left atrium? The right atrium?
    The superior vena cava and inferior vena cava for the right atrium
    Pulmonary veins for the left atrium
11. 
    What arteries carry blood away from the left ventricle? The right ventricle?
    The left ventricle is the aorta
    The right ventricle is the artery