Biology - Chemical Coordination and Integration Question with Solution | TestHub
Given below are two statements.
Statement I - Neurohypophysis does not release any hormones.
Statement II - Hormones of Supra-Optic and paraventricular nuclei are stored in pars intermedia.
In the light of the above statements, select the correct option given below:
Options:
Answer:
Solution:
Statement I is incorrect because the neurohypophysis (pars nervosa or posterior pituitary) stores and releases two hormones, oxytocin and vasopressin, into the blood, even though it does not synthesize them.
Statement II is incorrect because the hormones synthesized by the supra-optic and paraventricular nuclei of the hypothalamus (vasopressin and oxytocin) are transported axonally and stored in the neurohypophysis (pars nervosa), not in the pars intermedia. The pars intermedia secretes only one hormone called melanocyte stimulating hormone (MSH).
Therefore, both Statement I and Statement II are incorrect.
Answer: Both statement I and statement II are incorrect.
