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- Medical Illustrations
For over 2000 years artists have illustrated the intricate structure of the human body, creating images to elucidate medical procedures and record the pathologies of the body. These illustrations have often endured long after the text of the books. (Adapted from the Society of Medical Illustrators) -
Chest Radiographs
A collection of interesting chest x-rays that vary from the normal to the unusual.
Labeled normal chest x-ray Anatomy Links
Tag Archives: light microscopy
Megakaryocytes
The megakaryocyte is a bone marrow cell responsible for the production of blood thrombocytes (platelets), which are necessary for normal blood clotting. Megakaryocytes normally account for 1 out of 10,000 bone marrow cells but can increase in number nearly 10-fold during the course of certain diseases. (from wikipedia)
image from bloodlines (link)
Bronchiole
The bronchioles or bronchioli are the first passageways by which the air passes through the nose or mouth to the air sacs of the lungs in which branches no longer containcartilage or glands in their submucosa. They are branches of the bronchi. The bronchioles terminate by entering the circular sacs called alveoli.
Virtual Microscopy
Parathyroid Gland Histology
The parathyroid glands are small endocrine glands in the neck that produce parathyroid hormone. Humans usually have four parathyroid glands, which are usually located on the rear surface of the thyroid gland, or, in rare cases, within the thyroid gland itself or in the chest. Parathyroid glands control the amount of calcium in the blood and within the bones. (from wikipedia)
Virtual Microscopy
They are composed primarily of chief cells and fat with thin fibrous capsule dividing gland into lobules; may have a pseudofollicle pattern resembling thyroid follicles
Chief cells: 6-8 microns, polygonal, central round nuclei, contain granules of parathyroid hormone (PTH)
Basic cell type, other cell types are due to differences in physiologic activity. 80% of chief cells have intracellular fat
Chief cell is most sensitive to changes in ionized calcium
Oxyphil cells: slightly larger than chief cell (12 microns), acidophilic cytoplasm due to mitochondria; no secretory granules; first appear at puberty as single cells, then pairs, then nodules at age 40 (adapted from pathology outlines.com)
Other similar postsTestis histology
Posted in Reproductive
Also tagged Histology, Seminiferous Tubules, sperm, spermatozoa
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