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Thyroid gland

  

Workbook tasks

Slide 55: Thyroid gland

H/E

This slide is a section through the thyroid gland.

Identify microscopically:

  1. Follicles (acini)

  2. Colloid

  3. Clear cells

  4. (Fibrous septa and collagenous capsule

Draw and annotate:

A number of follicles of the thyroid gland in detail.

 

Reflection:
  1. What are the structures that form the follicles?
  2. Where are the clear cells found, and what do they look like?
  3. How is the fibrous tissue organized?
 

Elaboration

 

Macroscopic anatomy of the thyroid gland

  1. Discuss the position, relations, structure and blood supply of the thyroid gland.
  2. Briefly discuss the embryological development of the thyroid gland and the clinical relevance thereof.
  3. Name the structures affected by enlargement of the thyroid and list the effects thereof.
  4. List the relationship of the thyroid to the following clinically important structures - trachea, carotid arteries, recurrent laryngeal nerve, external laryngeal nerve, thyroidal arteries and parathyroids.
  5. Identify the thyroid on CT scans or MRl

Slides

 

Microscopy

Low magnification showing the thyroid and surrounding tissues
Thyroid follicle, showing the components of a follice
Detail of the cells in the parafollicular space
Example of a badly prepared slide of the thyroid
Low magnification showing the thyroid and surrounding tissues

Very low magnification

Very low magnification of the thyroid gland

Low magnification

Low magnification of the thyroid gland: Strips

Medium magnification

High magnification

High magnification of the thyroid gland: Strips

Very high magnification

Overview

 

Pathology

Hyperthyroidism 1
Hyperthyroidism 2
Hyperthyroidism 3

Follicular adenoma of the thyroid

Thyroid papillary carcinoma: Low magnification
Thyroid papillary carcinoma: Medium magnification
Thyroid papillary carcinoma: High magnification
Thyroid papillary carcinoma: High magnification

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© julie 2008 marius loots