With reference to the pituitary, which of the following statements is true?
A
Neurohypophysis secretes thyroxin and oxytocin.
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B
Neurohypophysis secretes TSH and STH.
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C
Neurohypophysis collects and stores vasopressin and oxytocin.
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D
Adenohypophysis secretes vasopressin and oxytocin.
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Solution
The correct option is C Neurohypophysis collects and stores vasopressin and oxytocin. The major site of vasopressin and oxytocin synthesis is in the posterior pituitary or neurohypophysis. These products are stored in vesicles at the end of neurosecretory axons in the neurohypophysis and secreted by a calcium-dependent process of exocytosis.