Lecture 6 Flashcards
1
Q
name the major arteries from the heart to the foot (8)
A
- thoracic aorta
- abdominal aorta
- common iliac artery
- external iliac artery
- femoral artery
- popliteal artery
- posterior tibial artery
- plantar arch
2
Q
name the major veins from the foot to heart (6)
A
- plantar venous arch
- posterior tibial vein
- popliteal vein
- femoral vein
- external iliac vein
- common iliac vein
3
Q
what is the tunica intima and its features?
A
the inner layer of blood vessels
- endothelium = a simple squamous epithelium which lines the lumen of all vessels
- sub endothelium = sparse pad of loose FCT (fibrous connective tissue) cushioning the endothelium
- internal elastic lamina = a condensed sheet of elastic tissue (well developed in arteries and less developed in veins)
4
Q
what is the tunica media and its features
A
the middle layer of blood vessles
- made of smooth muscle
- variable content of connective tissue fibres = mainly elastin and collagen
-thickness of media is proportional to both vessel diameter and blood pressure
5
Q
what is the tunica adventitia and its features?
A
outer layer
- loose FCT with high content of collagen and variable amount of elastin
- in larger vessels, adventitia contains the vasa vasorum
- lymphatics and autonomic nerves also found here
6
Q
veins are capacitance vessels, what does this mean?
A
they have the ability to hold additional blood volume in times of need
7
Q
what is the media layer of veins like compared to arteries?
A
the media layer or veins is much thinner than that of arteries
- few layers of smooth muscle
8
Q
what is the adventitia of an vein like?
A
it is often the thickest layer of a vein
