Why does a thrombus formed in deep vein thrombosis (DVT) resist initial breakdown better than a fresh superficial clot?

💡 Explanation

Fibrin cross-linking by factor XIIIa increases the mechanical stability and resistance to enzymatic degradation of the clot, because deep vein thrombi undergo more extensive cross-linking compared to superficial clots. Therefore, the deep vein thrombus is more resistant to breakdown rather than being more susceptible due to enzymatic factors.

• If a patient with Hashimoto's thyroiditis takes excessive iodine supplements while also having a deiodinase enzyme deficiency, which consequence is most likely?
• Why does consuming large quantities of poorly digestible plant fiber lead to increased gas production and bloating in the digestive tract?
• Which hormonal outcome occurs when disrupted sleep chronically elevates cortisol?
• If a patient's chronic inflammation fails to resolve due to continuous macrophage activation, which consequence becomes most likely?
• Why does a sensory neuron's action potential amplitude remain constant despite varying stimulus intensities?
• Why does adaptation reduce the perceived intensity of a strong citric acid taste over time?