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Flashcards in Canby lectue Deck (31):
1

watershed infarct

area of tissue supplied by two vessels. ACA/MCA=cortical border middle border, inferior border=MCA/PCA

Middle cerebral located in all three zones

2

Empty sella syndrome

roof of the diphragma sella is much larger than normal--> CSF slows into subarachanoid space of the sella turcica and put pressure on the pituitary gland and push it posteriorly and laterally so it looks empty in the sella turcica. Benign
• Compresses pituitary gland

3

which part of the anterior pituitary is the main glandular component? what does the anterior pituitary consist of

Pars distalis**
Pars tuberalis
Pars intermedia

4

what does the posterior pituitary gland consist of?

pars nervosa and infundibulum

5

Blood supply to anterior pituitary gland

Superior hypophysial artery-->forms primary capillary plexus that goes down to infundibulum--> portal vein branches off into adenohypophysis (anterior pit)--> form 2ndary capillary plexus

6

Somatotrope release

GH and somatotrope (acidophil)

7

Mammotrope

(acidophil) prolactin

8

corticootrope

basophil; ACTH and Beta Lipotrophic hormone

9

Gonadotrope

basophil secrete LH and FSH

10

thyrotrope

basophil; TSH

11

Herring bodies

storing of oxytocin and ADH along neurohypophysis

12

what is cortex composed of

mesoderm

13

what is medulla composed of

neuronal crest cells of neuroectoderm

14

Superior suprarenal artery is a branch of what

inferior phrenic

15

middle suprarenal artery is a branch of what

Aorta

16

inferior suprarenal A is a branch of

Renal

17

what does suprarenal arteries branch into and where do they supply?

cortical arteries: supply cortex

Medullary arteries: go through cortex but supply medulla only

18

where does the right and left suprarenal veins go into?

which suprarenal vein is more prone to be damaged? why

IVC(right)

Left) left renal vein

Right more prone to damaged bc it is shorter

19

Zona glomerulosa secretion

mineralcorticoid (aldosterone)

20

Zona fasciulata

glucocorticoid (cortisol)**, little bit of androgen

21

zona reticularis

Mainly androgen/sex hormones and little glucocorticoid

22

where are chromaffin cells located? and what is their function?

located in medulla; secrete catecholamines Epinephrine and norepinephrine

23

what is required to convert Norepinephrine to epinephrine

cortisol

24

where is cortisol secreted

zona fasiculata

25

Organ of zuckerkandl; what hormone mainly secreted? esp if theres a tumor there?

medullary tissue located outside adrenal gland. located i around abdominal aorta between bifurcation. Chromaffin cells will produce primarily Norepinephrine with a little epinephrine..so if theres a tumor, it will be predominantly be norepinephrine

26

what factor can influence zona glomerulosa

Angiotensin

27

what factor can infulence zona fasiculata

ACTH

28

what factor can infulence zona reticularis

ACTH

29

what are the two acidophil cells

somatotrope, mammotrope

30

chromaffin cells, and main NT released

post ganglionic sympathetic neurons primarily epinephrine and some norepinephrine inside medulla

31

what is cushing disease due to

pituitary adenoma