46. The ___ of the sperm contains the mitochondria which make ATP to power the swimming.

20. If a woman has just ended her menstrual phase, when is she most likely to ovulate?        

22. Hemorrhage with a large loss of blood causes ________.        

9. Which statement best describes arteries?     .  

42. If the aorta and pulmonary trunk were switched, oxygen rich blood would be pumped from the left ventricle to the lungs.

33. Of the three germ layers, the mesoderm forms the most body parts.

32. Pectinate muscles are found in the ________.        

36. If the mitral valve is unable to close properly, ________.        

2. Which structural layer of blood vessels is most responsible for maintaining blood pressure?        

39. Water is primarily reabsorbed in the ____ of the nephron.