T/F. The circular muscles of the iris contract when there is not much light available O True O False T/E. Nicotine is capable of binding to cholinergic receptors found on skeletal muscle and on the receptors of post ganglionic neurons of the Autonomic nervous system. O True O False Which statement is FALSE about the releasing and inhibiting factors/hormones produced by the hypothalamus? O They are transported by portal veins to the anterior pituitary O They regulate the anterior pituitary. O They are secreted into the general bloodstream and affect many glands. Adrenergic stimulation (epinephrine and norepinephrine) will; O Always be inhibitory O Either stimulatory or inhibitory depending on the target receptors O Always be stimulatory as it is released by the sympathetic system o be the product of the parasympathetic system