Part E - Module 19.5 Hemostasis DH didn\'t feel very well. She ached all over bu

Question

Part E - Module 19.5 Hemostasis DH didn't feel very well. She ached all over but she seemed to like the attention from the nursing staff and the young doctors who visited with her oncologist early in the morning. She missed her parents when they were away from her hospital room. The nurses were in her room constantly changing the dressing from where the bone marrow biopsy was taken. The biopsy site was still oozing blood and had been since the procedure was performed. DH's nurse contacted the oncologist, who had already contacted DH's parents for their consent to administer both plasma containing clotting factors and platelets. DH would need to be stabilized before the oncology team would be able to treat the AML. The blood plasma that was transfused into DH's body contained clotting factors. Which of the following statements is false with regard to the coagulation cascade? Prothrombin must be converted into its active form, thrombin, in the common pathway, which is required to convert fibrinogen into its active form, fibrin. The intrinsic pathway must be completed before the extrinsic pathway can initiate the process that synthesizes fibrin. The extrinsic pathway begins when damaged subendothelial cells display tissue factor on their plasma membranes The intrinsic pathway begins when factor XII is activated by exposed collagen found in damaged blood vessels. Submit My Answers Give Up

Explanation / Answer

Answer-

True- prothrombin must be converted into its active form, thrombin is the common pathway which is required to convert fibrinogen into its active form, fibrin.

False -The intrensic pathway must be completed before the extrensic pathway can inititae the process that cyntheisizes fibrin.

The intrensic pathway cannot be completed before intrensic pathway because intrensic pathway is an very slow proccess completed in several minutes where extrensic pathway is very quick completed in seconds.

False- The intrensic pathway begins when damaged subendothelial cells display tissue factor on their plasma membranes.
The extrinsic pathway is activated by external trauma that causes blood to escape from the vascular system. This pathway is quicker than the intrinsic pathway. It involves factor VII.

True- The intrensic pathway begins when factor XII is activated by exposed collagen found in damaged blood vessels.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.