Slide 67: Elastic Artery
This slide is a cross-section through the aorta.
- This slide is a cross-section through the aorta. View the slide on low magnification. In this view, you should be able to see the lumen, wall and surrounding structures of the blood vessel.
- The lumen of the blood vessel
- Wall of the blood vessel
- Adipose tissue surrounding the aorta
- Vasa vasorum
- Accompanying blood vessels
- Is this a cross or longitudinal section?
- What is the approximate diameter of the lumen of the blood vessel relative to the wall?
- What is the approximate diameter of the wall of the blood vessel relative to the lumen?
- Name the 3 layers and divisions of the wall of the aorta.
- What is characteristic of each layer and divisions of the wall of the aorta?
- What is characteristic of the elastic fibres in each layer?
- How is the outer border of the tunica intima determined?
- How does the inner part of elastic arteries receive nutrients? The outer part?
- View the medium and high magnification slides of the elastic artery. In this view, cellular detail should be visible.
- Identify the 3 layers of the elastic artery.
- Identify the tissue components present in each layer of the elastic artery.
- Make an annotated diagram of a partial section of the wall of the elastic artery, indicating the layers, divisions and tissue components. Clearly indicate the elastic elements in each layer and division.
- What are identifying features of elastic arteries?
- With increased age and increased blood pressure, a layer in elastic arteries increase in thickness. Name the layer and the component in the layer which cause the increased thickness.
- Cells in the wall of the elastic artery are involved with repair (normal) and atherosclerosis (pathological). Name the cells and the originating layer.
- What is the relationship of the three layers with respect to each other?
- What is characteristic of each layer?