Endocrine –FA
1. 332
Embryology
Thyroid Gland
-arise from where
-moves where
-connected to tongue by
-remanant of thyrogl duct
-persistant thyrogloss duct 2
-most common ectopic thyroid site
-clinical importance
,-thyroglossal duct cyst clinical sign 2
vs pharynheal cleft cyst -site ,move
-folliclular cells derived from
-parafollicular cells from: from floor of primitive pharynx
descends into neck.
Connected to tongue by thyroglossal duct,
Foramen cecum
may persist as cysts or the pyramidal lobe of thyroid.
tongue (lingual thyroid).
Removal may result in hypothyroidism if it is the only thyroid tissue present.
midline neck mass that moves with swallowing or protrusion of the tongue
vs persistent cervical sinus leading to pharyngeal cleft cyst in lateral neck
Thyroid follicular cells derived from endoderm. Parafollicular cells arise from 4th pharyngeal pouch.
2. 333
,Anatomy
Pituitary
Anterior pituitary
-hormones
, -MSH from where
-derive from which layer,name
-Alpha subunit in 4
-beta subunit importance
-proopiomelanocortine derivatives 3
-basophils 4
acidophils 2: Secretes FSH, LH, ACTH, TSH, prolactin, GH, and β-endorphin.
Melanotropin (MSH) secreted from intermediate lobe of pituitary.
Derived from oral ectoderm (Rathke pouch).
α subunit—common to TSH, LH, FSH, and hCG.
β subunit—determines hormone specificity.
Proopiomelanocortin derivatives—
β-endorphin,
1. 332
Embryology
Thyroid Gland
-arise from where
-moves where
-connected to tongue by
-remanant of thyrogl duct
-persistant thyrogloss duct 2
-most common ectopic thyroid site
-clinical importance
,-thyroglossal duct cyst clinical sign 2
vs pharynheal cleft cyst -site ,move
-folliclular cells derived from
-parafollicular cells from: from floor of primitive pharynx
descends into neck.
Connected to tongue by thyroglossal duct,
Foramen cecum
may persist as cysts or the pyramidal lobe of thyroid.
tongue (lingual thyroid).
Removal may result in hypothyroidism if it is the only thyroid tissue present.
midline neck mass that moves with swallowing or protrusion of the tongue
vs persistent cervical sinus leading to pharyngeal cleft cyst in lateral neck
Thyroid follicular cells derived from endoderm. Parafollicular cells arise from 4th pharyngeal pouch.
2. 333
,Anatomy
Pituitary
Anterior pituitary
-hormones
, -MSH from where
-derive from which layer,name
-Alpha subunit in 4
-beta subunit importance
-proopiomelanocortine derivatives 3
-basophils 4
acidophils 2: Secretes FSH, LH, ACTH, TSH, prolactin, GH, and β-endorphin.
Melanotropin (MSH) secreted from intermediate lobe of pituitary.
Derived from oral ectoderm (Rathke pouch).
α subunit—common to TSH, LH, FSH, and hCG.
β subunit—determines hormone specificity.
Proopiomelanocortin derivatives—
β-endorphin,
