Many a time you come across the patients presented with history of haemoptysis in ur clinical practises.It is defined as expectoration of blood, or bloody sputum. Haemoptysis is common. In most cases, it is mild, self-limiting and related to transitory infection but it should be considered a serious sign due to the risk of underlying pathology. The relative contribution of different causes depends on the local population.
Arteriolar Nephrosclerosis
Arteriolar Nephrosclerosis is a renal disease involving mainly arterioles, with degeneration of renal tubules and fibrotic thickening of glomeruli. The powerpoint slide present beneath will depict you about arteriolar nephrosclerosis as a whole including its:
- Definition
- Classification
- Pathogenesis
- Gross Morphology
- Microscopic Examination
- Clinical Features
- Renal Manifestation
Pituitary Gland
Anatomy of Pituitary Gland
This post also contains information about function ,development and position about Pituitary Gland
Development:
Develops from 2 sources-
• Ectodermal outpocketing of the stomodeum (Rathke’s pouch)
•Downward extension of diencephalon (infundibulum)
Approax 3 weeks embryo-Rathke’s pouch appears on the roof of the stomodeum
• Ectodermal outpocketing of the stomodeum (Rathke’s pouch)
•Downward extension of diencephalon (infundibulum)
Approax 3 weeks embryo-Rathke’s pouch appears on the roof of the stomodeum
By the end of 2nd month the connections of the pouch with the oral cavity degenerates & disappears
• Anterior wall of Rathke’s pouch proliferates greatly- forms the anterior lobe of hypophysis.
• Posterior wall of the Rathke’s pouch develop into pars intermedia
• Infundibulum gives rise to the stalk and pars nervosa
• It is composed of neuroglial cells and nerve fibres
• Persistent of Rathke’s pouch in the roof of the pharynx –pharyngeal hypophysis
Craniopharyngiomas-special type of tumor arises from the remnants of Rathke’s pouch
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