Histology ES 2

malakissa's version from 2016-01-21 15:05


Question Answer
Chromophils divided into Acidophils + basophils
Acidophils apearanceAcidophils: take eosin stain => appear pink (large lighter nucleus)
Acidophils 2 typesEither somatotroph (GH) or mamotroph (prolactin).
Basophils appearance take hematoxylin stain => appear violet (small and darker nucleus).
Basophils 3 typesEither Thyrotrophs (TSH ),Gonadotrophs ( FSH) or Corticotrophs (ACTH)
Acidophils are smaller/larger/same size than basophilslarger
Acidophils shapelarge rounded nucleus and large cytoplasm
acidophils nucleus relative to cytoplasm is small
Basophils are smaller/larger/same size than acidophissmaller
Basophils shapedark nucleus and cytoplasm.
Pars Intermedia isremnants of hypophyseal pouch (Rathke’s pouch)
Pars Intermedia formscolloid filled cysts lined with "simple" epithelium
The most abundant cells in Pars Intermediabasophils (corticotrophs, but they don’t secrete ACTH) that secret melanocyte stimulating hormone (MSH)
MSH hormone functionincrease pigmentation of the human.
Pars Nervosa isa modified neural tissue
Pars Nervosaunmyelinated acidophilic axons supported & ensheathed by glial cells called pituicytes
pituicytes staindark purple
The cell bodies of the axons in neurohypophysis are located insupraoptic nucleus (produce vasopressin/antidiuretic hormone (ADH)) & paraventricular nucleus (produce oxytocin) in the hypothalamus
the hormones (ADH+oxytocin) are producedin the nuclei of hypothalamus
the hormones (ADH+oxytocin) are storedin granules in the dilated axon terminals “neurosecretory (Herring) bodies” in the posterior pituitary
Herring bodies stainacidophilic, because they are dilated parts of axons