Pituitary

Question 1

Which pituitary lobe is the pars nervosa a part of?

Answer 1

Posterior lobe

Question 2

What are the components of the anterior pituitary?

Answer 2

Pars tuberalis and pars distalis

Question 3

What comprises the neurohypophysis?

Answer 3

Median eminence
Infundibular stalk
Infundiblar process (pars nervosa)

Question 4

The anterior pituitary is of ____ origin whereas the posterior pituitary is of ____ origin

Answer 4

Epithelial

Neural

Question 5

Rathke’s pouch is the embryological precursor to which structure?

Answer 5

Anterior lobe of the pituitary

Question 6

The _____ artery and ____ artery supply the pituitary and branch from the _____ artery

Answer 6

Superior hypophyseal
Inferior hypophyseal
Internal carotid

Question 7

The median eminence has an ____ supply but lacks significant ____ drainage other than the portal system to the _____

Answer 7

Arterial
Venous
Pars distalis

Question 8

What is the blood supply to the pars nervosa like?

Answer 8

Own arterial supply and drainage

Question 9

Hormones destined for the ____ pituitary are released directly into the systemic circulation

Answer 9

Posterior

Question 10

Hormones destined for the _____ pituitary travel via the portal blood vessels

Answer 10

Anterior

Question 11

Somatotrophs and lactotrophs are acidophils/basophils

Answer 11

Acidophils

Question 12

What are the basophils of the pars distalis?

Answer 12

• Gonadotrophs
• Thyrotrophs
• Corticotrophs

Question 13

Acidophils are _____ charged whereas basophils are ____ charged

Answer 13

Negatively

Positively

Question 14

In pregnancy there is a marked proliferation of acidophils/basophils

Answer 14

Acidophils (prolactin)

Question 15

Acromegaly would result in an proliferation of acidophils/basophils

Answer 15

Acidophils (GH)

Question 16

Cushings syndrome would result in a proliferation of acidophils/basophils

Answer 16

Basophils (ACTH)

Question 17

Which hormones are destined for the pars nervosa?

Answer 17

Oxytocin and vasopressin

Question 18

Release of ____ from the hypothalamus inhibits the release of GH

Answer 18

Somatostatin

Question 19

Release of somatoliberin from the hypothalamus stimulates release of _____ from the anterior pituitary

Answer 19

GH

Question 20

Release of ____ from the hypothalamus stimulates release of ACTH from the anterior pituitary

Answer 20

Corticotrophin Releasing Hormone (CRH)