Exam 7: Blood

The hormone ________, secreted by the ________, stimulates the production of red blood cells when the level of oxygen in the body decreases.

Which one of the following components of blood increase in number in response to the presence of an infectious agent?

Nutrients are absorbed into the blood from the ________ system.

Fragments of cells that are important in blood clotting are called ________.

T lymphocytes mature in the ________.

Blood substitutes currently being investigated focus on the oxygen-carrying capability of the substitutes as well as their ability to provide defenses similar to those of white blood cells.

An increased risk for cardiovascular health problems is associated with

Mature red blood cells have no nucleus or mitochondria.

An athlete participating in blood doping would be expected to have a low hematocrit.

A condition resulting from a reduction in the number of platelets in the blood is ________.

Which one of the following is directly involved in the process of blood clotting?

If a person were to stay at high altitudes for a long period of time, his hematocrit would increase in order to compensate for the decrease in the amount of oxygen in the air he is breathing.

Platelets are pieces of ________.

In order to be certain that blood transfusions are as safe as possible, medical laboratories not only conduct blood typing, but also ________.

Which one of the following population of cells is most markedly increased during bacterial infections?

Which one of the following is a human blood type?

Calcium must activate prothrombin to its enzyme form before it can participate in the clotting mechanism.

Oxygen, but not carbon dioxide, can bind to the heme group of hemoglobin.

The color changes associated with a healing bruise can be attributed to the breakdown of heme groups to ________.

Which one of the following types of white blood cells is capable of phagocytosis?