Histology - Endocrine

Front 1

adenohypophysis is derived from what tissue?

Back 1

oral ectoderm

=> becomes the anterior (pars distalis), intermediate (pars intermedia) and tuberal (pars tuberal) areas of the adenophysis

Front 2

neurohypophysis is derived from what tissue?

Back 2

neural ectoderm

=> becomes the posterior part of the gland (pars nervosa)

Front 3

name two types of acidophiles (found in the adenohypopysis)

Back 3

1)somatotrophs
-secretes somatotrophin (GH)

2)mammotrophs
-secretes prolactin

Front 4

name two types of basophiles (found in the adenohypopysis)

Back 4

1)gonadotrophs
-FSH and LH
2) thyrotrophs
-TSH
3)corticotrophs
-ACTH

Front 5

prolactin does what?

Back 5

stimulates the development of mammary glands during pregnancy; stimulates milk production

Front 6

TSH does what?

Back 6

stimulates synthesis and secretion of thyroxin adn triiodothyronine from the thyroid gland

Front 7

vasopressin and oxytocin are produced where?

Back 7

produced in the hypothalamus nuclei

SAD POX
supraoptic nuclei - ADH (vasopressin)
parventricular nuclei - oxytocin

Front 8

inferior hypophyseal artery carries blood to?

Back 8

neurohypophysis

Front 9

superior hypophyseal artery forms what?

Back 9

forms the fenestrated capillaries of the primary capillary plexus that receives RH hormones form hypothalamus;

Portal veins carrying RH from primary plexus reform as secondary plexus that surrounds the pars distalis of the adenohypopysis

Front 10

function of herring bodies?

Back 10

distended terminal ends of axons that store hormones coming from hypothalamus; located in the neurohypophysis

Front 11

adenohypophysis secretes what?

Back 11

1)FSH
2)LH
3)TSH
4)ACTH
5)MSH (melanophore stimulating)
6)GH
7) Prolactin

Front 12

neurogenic diabetes insipidus

Back 12

ADH secretion from post. pituitary is reduced or absent- pts excrete up to 20liters of urine a day

Front 13

follicles of thyroid contain?

Back 13

pink; colloid made of thyroglobulin which is secreted by epithelial cells and stored until converted to thyroxine

Front 14

cuboidal versus a flattened epithelium of thyroid follicle is indicative of what?

Back 14

flat - inactive; mainly sotrage
cubiodal - active secretion and uptake of thyroglobulin