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Parathyroid Glands Flash Cards - Anatomy & Physiology (view source)
Revision as of 16:47, 3 September 2008
, 16:47, 3 September 2008no edit summary
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!width="500"|'''Answer'''
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|<big>Describe the embryological origin of the parathyroid glands.
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*The parathyroid glands originate from the endoderm of pharyngeal pouches III and IV. The internal gland from pouch IV, external from pouch III.
||[[Endocrine System - Parathyroid Glands - Anatomy & Physiology|Answer article]]
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|<big>Describe the location of the parathyroid glands.
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*The parathyroid glands are multiple(around four) small glands approximately 1-2mm in length are located about the cranial trachea.
*The two internal glands are embedded within the Thyroid Glands, and the two external glands are outside the thyroid tissue.
*In the Horse, there are 'nests' of parathyroid tissue along the neck to the thoracic inlet.
||[[Endocrine System - Parathyroid Glands - Anatomy & Physiology|Answer article]]
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|<big>Describe the blood supply and venous drainage of the Parathyroid Glands.
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*Supply = Cranial Thyroid Artery and Caudal Thyroid Artery
*Venous Drainage = Superior, Middle and Inferior Thyroid Veins (leading to Internal Jugular Vein).
||[[Endocrine System - Parathyroid Glands - Anatomy & Physiology|Answer article]]
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|<big>What are the two cell types of the parathyroid gland, and what is their function?
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*Chief (Principal) Cells - function = production of Parathyroid Hormone, vital for calcium homeostasis.
*Oxyphil Cells - function unclear.
||[[Endocrine System - Parathyroid Glands - Anatomy & Physiology#Ultrastructure and Histology|Answer article]]
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|<big>Label the following histological section:
[[Image:ParathyroidGlandFlashCard1.jpg|left|thumb|250px|©RVC 2008]]
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*A = Thyroid
*B = Cords of Principal Cell
*C = Blood Vessels
*D = Capsule
||[[Endocrine System - Parathyroid Glands - Anatomy & Physiology#Histology Gallery|Answer Article]]
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