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Aorta

   

Workbook tasks

Slide 67: Elastic Artery

H/E

This slide is a cross-section through the aorta.

  1. 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.
  2. Identify:
    • The lumen of the blood vessel
    • Wall of the blood vessel
    • Adipose tissue surrounding the aorta
    • Vasa vasorum
    • Accompanying blood vessels

      1. Is this a cross or longitudinal section?
      2. What is the approximate diameter of the lumen of the blood vessel relative to the wall?
      3. What is the approximate diameter of the wall of the blood vessel relative to the lumen?
      4. Name the 3 layers and divisions of the wall of the aorta.
      5. What is characteristic of each layer and divisions of the wall of the aorta?
      6. What is characteristic of the elastic fibres in each layer?
      7. How is the outer border of the tunica intima determined?
      8. How does the inner part of elastic arteries receive nutrients? The outer part?

  3. 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.
  4. 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.

      1. What are identifying features of elastic arteries?
      2. 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.
      3. Cells in the wall of the elastic artery are involved with repair (normal) and atherosclerosis (pathological). Name the cells and the originating layer.

Reflection:
  1. What is the relationship of the three layers with respect to each other?
  2. What is characteristic of each layer?
 

Slides

Microscope

  1. Overview of elastic artery
  2. Detail of the wall of an elastic artery
  3. Vasa vasorum of an elastic artery
  4. Vasa vasorum of an elastic artery
  5. Vasa vasorum of an elastic artery
  6. Vasa vasorum of an elastic artery
  7. Detail of the intima and media of an elastic artery
  1. Detail of a small blood vessel
  2. Histology of the aorta

Overview

Pathology

Myxomatous aortic valve

Clinical case

Aortic stenosis in rheumatic heart disease
Dissecting aneurysm of thoracic aorta

Archive

2018

Slide 67: Cross-section through the aorta
Slide 67: Cross-section through the aorta
Layers of the elastic artery.
Structure of the elastic artery
Structures accompanying an elastic artery.
Structures accompanying an elastic artery.
Medium vein next to an elastic artery.
Muscular artery and small vein inside adipose tissue.
Two arterioli next to a medium vein.
Layers and divisions of the wall of an elastic artery.
Arteriole and venule
Arteriole and venule
Detail view of the tunica intima of an elastic artery

Older

Low magnification

Low magnification of the aorta

Medium magnification

Medium magnification of the aorta
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© februarie 2008 marius loots