18.3 Short Answer Questions
1) The ________ is the fraction of blood made up of leukocytes.
2) ________ is an inherited disease caused by the lack of, or reduced amount of, a clotting factor.
3) Blood clots are formed when cells become trapped among a tangle of the activated plasma protein ________ along with other clotting factors.
4) Leukocytes can exit the blood vessels through a process called ________.
5) ________ disease occurs in many bone marrow transplant patients because of the activity of the T lymphocytes.
6) ________ turn off allergic responses by phagocytizing allergens and degrading histamine.
7) The absence of a nucleus, mitochondria, and ribosomes is a telltale characteristic of ________.
8) The presence of dark purple-stained granules along with a two-lobed nucleus is indicative of a ________.
9) Plasma minus clotting factors is called ________.
10) Monocytes develop into ________, which are phagocytic cells that ingest foreign cells and debris.
11) ________ are cell fragments that initiate a blood clot formed of blood cells trapped in a network of fibrin protein.
12) The formation of blood is called ________.
13) Newly developed blood cells enter the circulatory system by blood ________, or wide capillaries, within the marrow.
14) For the majority of fetal development, blood formation occurs primarily in the ________ and later in the bone marrow.
15) Insufficient vitamin B12 or folic acid can cause ________ and therefore lower a person's oxygen-carrying capacity.