Chapter 17 Poll questions

Which is not a function of blood?

• all are functions

• prevents infection

• prevents blood loss (hemostasis)

• transport of oxygen and nutrients

• maintains pH and fluid volume

A major function of the most common plasma protein, albumin, is _______.

• maintenance of plasma osmotic pressure

• buffering changes in plasma pH

• fighting foreign invaders

• both a) and b)

• none of the above

Red blood cells are efficient oxygen transport cells. Which characteristic is the major contributor to the significant oxygen-carrying capacity of a red blood cell?

• they contain myoglobin

• they don't divide

• they are biconcave discs

• they lack mitochondria

• all of the above

A patient with low iron levels would experience which of the following symptoms?

• a decreased white blood cell count

• an increase in fatigue

• an increase in energy level

• an increased white blood cell count

• all of the above

An elevated neutrophil count would be indicative of _______.

• a cancer

• an acute bacterial infection

• an allergic reaction

• a parasitic infection

• none of the above

Why don't platelets form plugs in undamaged vessels?

• Platelets don't form plugs, it is the megakaryocytes that form the plugs.

• Only contact of platelets with exposed collagen fibers and von Willebrand factor causes them to be sticky and form plugs.

• Plugs do form, but are removed by macrophages.

• Platelets aren't formed until vessel damage occurs.

• none of the above

List the steps of hemostasis in the correct sequence.

• thrombolysis, clot retraction, coagulation, platelet plug formation, vascular spasm

• coagulation, clot retraction, thrombolysis, vascular spasm, platelet plug formation

• platelet plug formation, coagulation, vascular spasm, thrombolysis, clot retraction

• vascular spasm, platelet plug formation, coagulation, clot retraction, thrombolysis

Which end point of the coagulation phases is mismatched?

• phase 3; cross-linked fibrin mesh

• phase 1 intrinsic pathway; factor X

• phase 2; thrombin

• phase 1 extrinsic pathway; prothrombin activator

• none are mismatched

Which step of hemostasis is the clot dissolved?

• thrombolysis (fibrinolysis)

• vascular spasm

• platelet plug formation

• coagulation

• clot retraction

Which is correctly matched?

• A antigen; anti-A in plasma

• B antigen; anti-A in plasma

• A and B antigens; no plasma antibodies

• A and B antigens; no plasma antibodies

• none are correctly matched