gt;gt; this tutorial is going to cover blood vessels and regulation of arterial blood pressure. The learning objectives that we’ll cover include the.
Types of blood vessels, regulation of blood pressure and also regulation of tissue blood flow or tissue perfusion. So, let’s start.
With the structure and function of the major types of blood vessels in the body. If we look at our circulation and we start at the heart, the heart pumps into arteries.
So arteries are blood vessels that deliver blood away from the heart and they progressively branch into smaller and smaller arteries.
Until we reach these microscopic arteries called arterioles. Arterioles funnel into tiny little capillaries and then capillaries funnel into microscopic venules.
And finally the blood vessels converge on larger and larger veins which deliver the blood back to the heart. We’re going to use a model,.
A simplified schematic or model of the circulatory system in order to simplify things and it looks like this. So, in this model we have the heart.
The heart pumps the blood into the arteries, remember the arteries are these elastic basically delivery vessels so they’re high pressure, they’re very elastic.
Transporting a beating heart for transplant TechKnow
gt;gt; when it comes to heart TRANSPLANTS, IT’S ALWAYS A RACE AGAINST TIME. WE’VE ALL SEEN IT ON TV. WHEN A DONOR HEART BECOMES AVAILABLE, MEDICAL TEAMS MUST.
Move quickly. THE ORGAN IS REMOVED AND PRESERVED BY PLACING IT IN ICE. THE HEART MUST ARRIVE AT THE RECIPIENT’S HOSPITAL WITHIN SIX.
Hours that’s because the ice DAMAGES THE HEART MAKING IT UNFIT FOR TRANSPLANT. IN THIS WILL KEEP HEARTS WARM AND BEATING. THIS WILL BE A MAJOR BREAK.
Through in transplant history. THE FIRST HUMAN TRANSATLANTIC TOOK PLACE IN A HOSPITAL IN SOUTH AFRICA IN 1967. SINCE THEN IT HAS BECOME A FAIRLY ROUTINE PROCEDURE WITH.
2,000 happening in the united STATES. THERE IS ONE ASPECT TO THE PROCESS THAT HAS REMAINED THE SAME. YEP, GETTING THE HEART FROM.
Point a to point b still INVOLVES PUTTING IT IN COOLER FULL OF ICE. HERE THEY’RE TESTING OUT A NEW DEVICE THAT WILL CHANGE THE WAY ORGANS ARE TRANSPORTED AND MAKE.
A cooler a thing of the past, WELL, AS FAR AS ORGAN TRANSPORT. gt;gt; A HUMAN ORGAN HAS NEVER BEEN KEPT ALIVE OUTSIDE OF THE HUMAN BODY UNTIL THIS MACHINE BECAME A CLINICAL REALITY.
gt;gt; reporter: the head of u la’s HEART AND LUNG TRANSPLANT PROGRAM. gt;gt; TO SAY THAT INSTEAD OF HAVING MY HEART ON ICE, I WANT IT TO BE WARM AND BEATING.