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ENDOCRINE > [ANAT] PITUITARY GLAND > Flashcards

[ANAT] PITUITARY GLAND Flashcards

1
Q

Site of pituitary gland

A

hypophyseal fossa

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2
Q

pituitary gland is separated from pons by

A

dorsum sellae

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3
Q

pituitary gland is connected to hypothalamus by

A

infundibulum

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4
Q

anterior relation

A

tuberculum sellae

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5
Q

posterior relation

A

dorsum sellae

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6
Q

superior relation

A

diaphragma sellae
optic chiasma

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7
Q

inferior relation

A

body of sphenoid
sphenoidal air sinus

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8
Q

relations of gland on either side

A

cavernous sinus + its contents

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9
Q

parts of adenohypophysis

A

pars distalis
pars intermedia
pars tuberalis

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10
Q

structure encircling infundibulum

A

pars tuberalis

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11
Q

parts of neurohypophysis

A

pars nervosa
infundibulum
medial eminence

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12
Q

anterior lobe consists of

A

pars disatalis
pars tuberalis

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13
Q

posterior lobe consists of

A

pars intermedia
pars nervosa
infundibulum
medial eminence

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14
Q

arterial supply of adenohypophysis

A

superior hypophyseal arteries

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15
Q

arterial supply of neurohypophysis

A

inferior hypophyseal arteries

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16
Q

superior hypophyseal arteries arise from

A

cerebral part of ICA
(4th part of ICA)

17
Q

inferior hypophyseal arteries arise from

A

cavernous part of ICA
(3rd part of ICA)

18
Q

main transporter of hormones in blood

A

hypothalamic hypophyseal portal vein

19
Q

venous drainage

A

cavernous sinus

20
Q

forms infundibular ring

A

inferior hypophyseal arteries

21
Q

receives hormones from supraoptic & paraventricular nuclei

A

inferior hypophyseal arteries

22
Q

supraoptic nucleus secretes

A

ADH to posterior pituitary

23
Q

paraventricular nucleus secretes

A

oxytocin to posterior pituitary

24
Q

infundibular/arcuate nucleus secrete

A

release & release inhibiting hormones to the anterior pituitary (via portal circulation)

25
Q

upward pressure of pituitary tumors causes

A

bitemporal hemianopia

26
Q

downward pressure of pituitary tumors causes

A

ballooning of sellae

27
Q

lateral pressure on cavernous sinus causes

A

eye congestion
diplopia

28
Q

other effects of pituitary tumors

A

endocrinal disturbances

29
Q

embryological origin of pituitary gland

A

ectodermal

30
Q

2 primordia of pituitary gland

A

1-upward growth from ectodermal roof of stomodeum=hypophysial diverticulum (Rathke’s pouch)

2-downward growth from neuroectoderm of floor of diencephalon= neurohypophysial diverticulum (infundibular process)

31
Q

pituitary cleft is present between

A

pars distalis & intermedia

32
Q

pituitary cleft is

A

a remnant of Rathke’s pouch

33
Q

craniopharyngeal canal present in

A

sphenoid bone
original course of stalk of Rathke’s pouch

34
Q

anomalies of pituitary gland

A

craniopharyngioma
pharyngeal hypophysis

35
Q

craniopharyngioma is?

A

remnant of stalk of Rathke’s pouch in roof of oropharynx

36
Q

craniopharyngioma causes

A

hypopituitarism

ENDOCRINE (9 decks)

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