Cardiovascular System - Wet Room St. 5 Flashcards
What is the basic plan of the blood vessels?
- Innermost epithelium
- Middle muscle layer
- Outer connective tissue layer
What is the innermost epithelial layer known as?
- Tunica intima
What is the middle muscular layer known as?
Tunica media
What is the outer connective tissue layer known as?
Tunica adventitia
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What are the five main layers of vessel from internal to external?
- Tunica intima
- Internal elastic lamina
- Tunica media
- External elastic lamina
- Tunica adventitia
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How do artery and vein walls differ histologically?
Veins
- Thinner wall altogether
- Thin adventitia
- Thin media
Arteries
- Thick wall
- Thick adventita
- Thick dense media
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Which of these is an elastic and which is a muscular artery and how can you tell?
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A = elastic artery
- Elastin died purple and lots of it in tunica media
- Thinner tunica adventitia
- Thicker tunica intima
B = muscular artery
- Less elastin
- Thicker tunica adventitia
- Thinner tinica intima
What is similar about the tunica adventitia of both elastic and muscular arteries?
- Contain vasa vasorum (vessels of the vessels)
What type of artery are the aorta and pulmonary trunk?
- Elastic
- Conducting
What type of artery are the radial and femoral arteries?
- Muscular
- Distributing
What structure is shown here?
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- Vein valve
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