Medical School Pathology, Chapter 4d

[TRIVIUMOWN1]

LOL. I got here through Death metal..

[123michaelm123]

I'm a 4th year veterinary student, and this was an excellent review for the national boards, sir :D thanks!

[AfricaDreamProject]

To say that hemostasis and thrombosis are "opposite" can be confusing. Here's some further explanation on the relationship between the two processes:

"Hemostasis is the cessation of bleeding from a cut or severed vessel, whereas thrombosis occurs when the endothelium lining blood vessels is damaged or removed (eg, upon rupture of an atherosclerotic plaque). These processes encompass blood clotting (coagulation)...."

[AfricaDreamProject]

MORE: "Complex, yet interrelated systems exist to maintain the fluidity of the blood in the vascular system while allowing for the rapid formation of a solid blood clot .... These interrelated systems are referred to as hemostasis when they are invoked as part of the body's normal defense mechanisms to prevent blood loss. Alternatively, these same interrelated systems are invoked during thrombosis which refers to unwanted, pathological, and in some instances life-threatening clot formation."

[AfricaDreamProject]

And finally: "Thrombosis is indeed a pathologic extension of the normal hemostatic mechanism."

[numerid4]

Thank you so much!! This was so helpful.

[wisperwend]

Im in 11th grade... going to UNC Chapel Hill for college. after 4 years there, what medical school do you suggest i attend?

[WashingtonDeceit]

whichever one believes that education is more important than money, if you find that one, please let me know where it is.....wdc

[wisperwend]

I like that answer lol... is the wdc Washington DC, or what?

[geLhie]

@WashingtonDeceit hahahahahaha, :P

[absolutjag9]

i meant pre versus post mortem ::doh::

[WashingtonDeceit]

lotsa different clues, none seem to be absolute

pre-mortem hemorrhage (hematoma) has some degree of consistency

and remember, a "hematoma" has a pushing "mass effect" otherwise it would not be called a hematoma, right?

a post-mortem hemorrahe cannot "expand" to puss adjacent tissues

wdc

[absolutjag9]

how can u tell a hematoma pre versus post hemorrhage? thx in advance for help.

[lisakisa100]

bravo!!!!

OMG I got it!!!

[HoneiiDiiva]

I am NOT in medical school but find these videos very intriguing. I do want to focus on a career in medicine soon :-) Im a sucker for medical related videos, books and shows.

[ashk47777]

i agree with bargold's 2nd question can you explain how the role of heamostatsis and thrombosis oppose each other ?

[razosebring]

3 main elements contribute to hemostasis are coagulation factors, platelets and blood vessel wall..disease affecting the function of either or all these elements result in hemorrhage or thrombosis (excessive clotting)....use ur brain use ur brain!!

[bargold79]

Thank you for the videos.they are great study tool.

I have a couple questions on this section

In the linear progression of hemoglobin degredation you say bilirubin and then hemosiderin. is bilirubin degraded into hemosiderin at some point or are other elements degraded into hemosiderin?

also, you said hemostasis is opposite thrmobosis, but then say it is involved in platelette aggregation and fibrin polymerization? how can it be opposite thrombosis and aid in clot formation?

Thank you again

[orthomaslau]

I totally agree with bilalalam 1. The materials are also helpful to allied health professionals taking pathology course.

[bilalalam1]

Thanks alot for all your videos, you are doing a great job which will help many medical students worldwide.