Multiple Choice
Prostacyclin is a hormone that is normally active in the blood but becomes inactive when a blood vessel ruptures and hemostasis begins. Considering this, which of the following is the most likely function of prostacyclin?
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17. The Blood
Platelets: Hemostasis
Back17. The Blood
Platelets: Hemostasis
- Textbook Question
Number the steps of hemostasis in order, putting 1 by the first event, 2 by the second, and so on.
____The intrinsic/contact activation and extrinsic/tissue factor pathways produce factor Xa.
____The clot retracts.
____Thrombin converts fibrinogen to fibrin, and fibrin glues the plug together.
____Platelets are activated, and the platelet plug forms.
____Vasoconstriction and increased tissue pressure decrease blood flow through the vessel.
____Tissue plasminogen activator activates plasmin, which degrades fibrin.
____The common pathway produces thrombin.
1views - Textbook Question
Tissue plasminogen activator, urokinase, and plasmin are important components of:
a. Coagulation
b. Fibrinolysis
c. Platelet plug formation
d. Hemostasis
- Multiple ChoiceWhich term describes a clot that develops and persists in an unbroken blood vessel?1views
- Multiple Choice
Which option correctly arranges/orders the components of the coagulation pathway?
1views - Multiple ChoiceWhich of the following are cell fragments that play an important role in the blood clotting process?1views
- Multiple ChoiceThe component of the blood that uses coagulation to control blood loss is which of the following?1views
- Multiple ChoiceWhich of the following is NOT a function of platelets in hemostasis?
- Multiple ChoiceIn a healthy adult, platelets (thrombocytes) make up approximately what percentage of total blood volume?1views
- Multiple ChoiceWhich plasma protein is necessary for blood clotting?
- Multiple ChoiceWhich blood component helps form clots to stop bleeding?
- Multiple ChoiceWhich type of blood cells are vital for normal blood clotting?1views
- Multiple ChoiceIn the context of hemostasis, which of the following are the smallest formed elements found in blood?
- Multiple ChoiceIn hemostasis, what is the primary function of blood platelets (thrombocytes)?
- Multiple ChoiceWhich component of blood plays a major role in blood clotting?1views