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Oxytocin: Quiz

  

Question 1: ________ – in lactating (breastfeeding) mothers, oxytocin acts at the mammary glands, causing milk to be 'let down' into a collecting chamber, from where it can be extracted by compressing the areola and sucking at the nipple.
Infant formulaBreastfeedingCoeliac diseaseAsthma

Question 2:
What is the chemical name of Oxytocin (IUPAC)
6,6-dimethyl-3-pentyl-6a,7,8,9,10,10a-hexahydrobenzocchromene-1,9-diol
4-morpholin-4-ylbutan-2-yl 4-phenyloxane-4-carboxylate
3-propanoic acid
4-amino-5-bromo-N-2-(diethylamino)ethyl-2-methoxybenzamide

Question 3: Oxytocin and oxytocin receptors are also found in the heart in some rodents, and the hormone may play a role in the embryonal development of the heart by promoting ________ differentiation.
Skeletal muscleCardiac muscleSmooth muscleMuscle

Question 4: Modulation of ________ activity.
Hypothalamic–pituitary–adrenal axisAdrenal glandEndocrine systemHypothalamus

Question 5: In several species, oxytocin can stimulate sodium excretion from the kidneys (natriuresis), and in humans, high doses of oxytocin can result in ________.
Diabetic ketoacidosisHypokalemiaDehydrationHyponatremia

Question 6: [24] By contrast, virgin female sheep show maternal behavior towards foreign lambs upon ________ infusion of oxytocin, which they would not do otherwise.
Choroid plexusMeningesArachnoid granulationCerebrospinal fluid

Question 7:
How is Oxytocin excreted?
Biliary and renal
Lactic
Renal, very slow
Renal

Question 8: Oxytocin, under certain circumstances, indirectly inhibits release of adrenocorticotropic hormone and ________ and, in those situations, may be considered an antagonist of vasopressin.
AldosteroneEstradiolTestosteroneCortisol

Question 9:
What is the elimination half life of Oxytocin?
75%: 110 min; 20%: 16 min.
70-80 min
1u20136 min
40 min , 3 h , 30 min

Question 10:
What is the molecular weight of Oxytocin?
518.05 g/mol
245.32 g/mol
318.449 g/mol
1007.19 g/mol
















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