Chp. 18 Openstax Physiology

DVT always causes symptoms. (T/F)

False

Usually blood clots are small and your body will remove them on its own. (T/F)

True

The process by which leukocytes squeeze through adjacent cells in a blood vessel wall is called ________. cytoplasmic extending leukocytosis emigration positive chemotaxis

emigration

Which of the following describes a neutrophil? abundant, granular, especially effective against bacteria rare, agranular, releases antimicrobial defensins abundant, agranular, especially effective against cancer cells rare, granular, contains multiple granules packed with histamine

abundant, granular, especially effective against bacteria

Interleukins are associated primarily with which of the following? inflammation all of the above immune responses production of various lymphocytes

all of the above

Which of the following plasma proteins are produced by the liver? fibrinogen alpha globulin beta globulin all of these are produced by the liver

all of these are produced by the liver

T and B lymphocytes ________. are polymorphonuclear are most active against parasitic worms proliferate excessively in leukopenia are involved with specific immune function

are involved with specific immune function

A patient has been experiencing severe, persistent allergy symptoms that are reduced when she takes an antihistamine. Before the treatment, this patient was likely to have had increased activity of which leukocytes? neutrophils natural killer cells basophils monocytes

basophils

Prothrombin is converted to thrombin during the ________. extrinsic pathway formation of the platelet plug common pathway intrinsic pathway

common pathway

Which of the following statements about blood is true? Blood is slightly more viscous than water. Blood is slightly more acidic than water. Blood is slightly more salty than seawater. Blood is about 92 percent water.

Blood is slightly more viscous than water

The superficial veins do not lie close to the surface of the skin. (T/F)

False

DVT is a condition that forms when a blood clot forms in a deep vein. (T/F)

True

Veins have valves that prevent the blood from flowing back towards the feet. (T/F)

True

Aging and damaged erythrocytes are removed from the circulation by ________. monocytes macrophages myeoblasts mast cells

macrophages

Thrombocytes are more accurately called ________. clotting factors megakaryoblasts megakaryocytes platelets

platelets

Which of the formed elements arise from myeloid stem cells? platelets natural killer cells all of the above B cells

platelets

A patient has been suffering for 2 months with a chronic, watery diarrhea. A blood test is likely to reveal ________. hypoxemia polycythemia a hematocrit below 30 percent anemia

polycythemia

Which of the following statements about erythropoietin is true? It is a hormone produced by the thyroid gland. It is a hemopoietic growth factor that prompts lymphoid stem cells to leave the bone marrow. Both a and b are true. It facilitates the proliferation and differentiation of the erythrocyte lineage.

It facilitates the proliferation and differentiation of the erythrocyte lineage.

Which of the following statements about albumin is true? All of the above are true. It is produced by specialized leukocytes called plasma cells. It is the most abundant plasma protein. It draws water out of the blood vessels and into the body's tissues.

It is the most abundant plasma protein

The first step in hemostasis is ________. activation of the intrinsic pathway vascular spasm activation of the common pathway conversion of fibrinogen to fibrin

vascular spasm