Tissue plasminogen activator is activated by __________ and changes plasminogen into ___________.

84)Formation of erythrocytes occurs in the _______. Group of answer choices Red bone marrow Yellow bone marrow Plasma White bone marrow 85) The circulatory system has only 1 circuit that circulates blood. Group of answer choices False True 86) In the homeostatic regulation of blood oxygen levels, the effector is the ________. Group of answer choices Kidney CO2 Red Bone Marrow Blood Oxygen Levels Lungs 87) For each heart chamber the period of contraction  is called ___________________. Group of answer choices Diastole Systole

65) Which is not true about erythrocytes? Group of answer choices Has a biconcave shape Transports CO2 Contains a nucleus Contains hemoglobin 66) Carbon dioxide dissolves more readily in blood plasma than oxygen does. Group of answer choices True False 67) An increase in CO2 will decrease the pH, and thus increase sympathetic activity on the heart. Group of answer choices False True 68) The majority of carbon dioxide in the blood is transported as ___________. Group of answer choices Bicarbonate ions (plus H+ bound to hemoglobin) CO2 molecules bound to hemoglobin Dissolved CO2 in the plasma

glucose in the urine is a sign of what? glucose in the urine is normal, type two diabetes, or hyper thyroidism.