*In an electrocardiogram (EKG / ECG) the t-wave represents the:

*If a blockage occurs in a vessel, it may be possible for blood to follow an alternative pathway called a(n):      

*The levels of which hormones help time when birth should occur?

*Name one hormone that is produced by the hypothalamus but secreted from the posterior pituitary (acronyms are fine):

*The portion of hemoglobin that binds oxygen is the:

*Veins are different from arteries in that they have:

*Carbon dioxide is created in which metabolic pathway(s_?

*Veins are different from arteries in that they have:

*What day  does menstruation begin in a 28 day cycle?

*Increases in the heart rate is achieved by affecting the ___________.