What are the roles of thrombin in coagulation?
What will be an ideal response?
Answer:
Platelet aggregation
Factor activation (FV, VIII, XI)
Anticoagulant activity (via PC, PS, and thrombomodulin)
Fibrin formation (fibrinogen cleavage)
Fibrin stabilization (FXIII activation)
Fibrinolysis (TAFI activation)
Tissue repair
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Which of the following statements best describes a propellant?
a. A mixture of an oxidizer and some other arbitrary substance that readily burns. b. An oxidation-reduction reaction between the components of black-powder when its initiated by a heat from primer. c. A material such as smokeless powder that defragrates and produces a relatively large volume of gases and vapors. d. A component of the round that explodes from the mechanism shock it experiences when it hits a target.
Which of the following drugs can be used to prevent bleeding during fiberoptic bronchoscopy? 1. Phenylephrine 2. Dopamine HCl 3. Epinephrine
a. 1 and 2 only b. 2 and 3 only c. 1 and 3 only d. 1, 2, and 3
What are some factors that all people have in common regardless of differences in background?
An SMV cranial projection (Schueller method) with accurate positioning demonstrates
1. the nasal fossae just anterior to the ethmoid sinuses. 2. the mandibular mentum slightly posterior to the ethmoid sinuses. 3. an equal distance from the mandibular ramus to lateral cranial cortex on both sides. 4. the bony nasal septum aligned with the long axis of the exposure field. a. 2 and 3 only b. 1 and 3 only c. 1, 3 and 4 only d. 1, 2, 3, and 4