A. True Stimulation of the receptor generates impulses in the afferent limb.
B. True Stimulation of osmoreceptors reflexly modifies ADH output from the posterior pituitary gland.
C. False The knee jerk reflex arc contains only one central nervous synapse.
D. True In the knee jerk extensors of the knee contract, while flexors relax (reciprocal inhibition).
E. False Higher centres can facilitate or inhibit many reflex actions such as micturition.