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The coagulation cascade is classically divided into three pathways. The tissue factor (formerly known as the extrinsic) and the contact activation (formerly known as the intrinsic) pathways both activate the final common pathway of factor X, thrombin and fibrin.
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Which of the following represents a difference between extrinsic and intrinsic blood clotting pathways?
The extrinsic pathway is faster than the intrinsic pathway
What are the features that generally distinguish pathways of catabolism from pathways of anabolism?
What are the features that generally distinguish pathways of catabolism from pathways of anabolism
What does not hasten clotting?
Heparin opposes clotting
Do sensory pathways travel to or from the brain?
Sensory pathways tavel to the brain.
Which three tissues are considered to be key locations for the integration of metabolic pathways?
liver, muscle, adipose per the science of nutrition book
Which of the following represents a difference between extrinsic and intrinsic blood clotting pathways?
The extrinsic pathway is faster than the intrinsic pathway
How many pathways are there in a parallel circuit witn theree bulbs?
If all three bulbs are in parallel, then there are three current pathways.
The three main pathways through which a blood flows?
the three pathways through wich blood flows are the arteries,veins,and capillaries
How does irreducible complexity relate to the flagellar motor?
Researchers have proposed potentially viable evolutionary pathways for allegedly irreducibly complex systems such as blood clotting, the immune system and the flagellum
What is blood clotting?
There are the intrinsic and extrinsic pathways in clotting. The intrinsic pathway is initiated when blood comes in contact with damaged endothelium or collagen, and involves clotting factors XII, XI, IX, and VIII. The extrinsic pathway is activated when being exposed to tissue factor from tissue injury or the addition of thromboplastin to blood, and involves clotting factor VII. The two pathways meet at the point of clotting factor X activation to lead the final common pathway. From here, factor X is converted to prothrombin, prothrombin to thrombin, thrombin to fibrinogen, fibrinogen to fibrin, and finally fibrin to fibrin clot. Platelets, activated by thrombin, adhere to the damaged endothelium wall or collagen to form a plug. At the same time, they activate clotting factors VII and X. More platelets are stimulated by fibrin clots, resulting in reinforcing the formed clots.
What are the three types of haemophilias?
Haemophilia A - an inhibition of clotting caused by a deficiency in a protein called Clotting Factor VIII Haemophilia B - an inhibition of clotting caused by a deficiency in a protein called Clotting Factor IX Haemophilia C - an inhibition of clotting caused by a deficiency in a protein called Clotting Factor XI -similar to- vonWillebrand's Disorder - an inhibition of clotting caused by a deficiency in a protein called the vonWillebrand's Factor
What will happen if the sample without anticoagulant is not tested within three minutes?
clotting
Why is it important to run a PT and PTT on any sample for a thrombophilia workup?
There are two ways (pathways) that the blood clots. One is the intrinsic and the other is the extrinsic. There are clotting factors (about 13) that are unique to both pathways. The PT measures one pathway while the PTT measures the other. There are also factors that both pathways share or have in common. By testing both the PT and PTT, you are esentially testing for all the clotting factors collectively without ruling out a specific factor which is very expensive to test. Now, these are usually performed prior to a surgery in order to let the surgeons know if there is a bleeding risk to the patient. This process doesn't include other factors that have to do with the clotting process like platelets counts, platelet aggregation tests (bleeding time), or biochemical imbalances like calcium deficiencys.
Are anabolic pathways convergent pathways?
Most anabolic pathways are divergent, while catabolic pathways are convergent.
What is proteins coagulate?
Blood coagulation can explain the concept of coagulation. When we have a cut in our skin, the blood loss would be stopped by fibrin clot formation. This is formed by series of pathways formed by blood clotting factors, thrombin and fibrin.
What are the features that generally distinguish pathways of catabolism from pathways of anabolism?
What are the features that generally distinguish pathways of catabolism from pathways of anabolism
What three components needed for hemostasis and coagulation?
Vasoconstriction, platelet plug formation and clotting of blood.
