<prompt> Regarding Oxytocin, true statements areActs on myoepyhelial cellsCauses contraction of uterus during labourMay cause retention of waterAll of the above  <response>: Refer KDT 6e p 319 Oxytocin is an octapeptide secreted by the posterior Pituatory along with ADH. Both Oxytocin and ADH are synthesized within the nerve cells bodies in supraoptic and paraventricular nuclei of hypothalamus are transpoed down the axon and stored in the nerve endings within the neuro hypoohysis Oxytocin increases the force and frequency of uterine contractions Oxytocin causes myoepthelium of mammary alveoli and forces milk into the bigger milk sinusoids 