The ampulla is a portion of () A: the vulva B: the vagina C: the uterus D: the uterine tubes E: the ovary

The steel tubes can be filled with concrete to convert the system into a composite structure and capable of bearing the service load.

What are the names for the tubes in your body that carry blood from your heart to the rest of your body.

Tympanostomy tubes are meant to ______. A: dissolve slowly. B: replace medicines. C: alleviate eardrum pressure. D: reduce earaches.

The American Indians used long tubes to bake tobacco before they smoked it.（） A: Right B: Wrong C: Not Mentioned

They worked 46 meters above the river, without . ( ). A: air tubes B: safety nets C: scuba gear D: mental helmets

In the analysis of the various types of electronic circuits, the circuits using solid-state devices are presented first, ____ a shorter explanation of circuits using electron tubes is presented.

The Harvard study has concluded that ______. A: children never benefit from ear surgery. B: tympanostomy tubes result in deafness. C: some surgeons are too eager to operate. D: ear tube operations are too expensive.

A 42-year-old patient is scheduled for surgery that will likely require a transfusion. Because the patient has a rare blood type, an autologous blood transfusion is planned. Prior to surgery, 1500 mL of blood is collected. The collection tubes contain calcium citrate to prevent coagulation. Which of the following is the mechanism for citrate’s anticoagulative action?

A 42-year-old patient is scheduled for surgery that will likely require a transfusion. Because the patient has a rare blood type, an autologous blood transfusion is planned. Prior to surgery, 1500 mL of blood is collected. The collection tubes contain calcium citrate to prevent coagulation. Which of the following is the mechanism for citrate’s anticoagulative action? A: Activating plasminogen B: Binding factor XII C: Blocking thrombin D: Chelating calcium