Which type of receptor responds to norepinephrine and is used to relax smooth muscle? (Tip: it is also found in the lungs)Group of answer choicesAlpha-2-adrenergic receptorsAlpha-1-adrenergic receptorsBeta-1-adrenergic receptorsBeta-2-adrenergic receptorsBeta-3-adrenergic receptors

What type of receptor is involved in reflex actions that maintain muscle tone and, thereby, the body's equilibrium and posture?Multiple Choiceproprioceptorscutaneous receptorspain receptorschemoreceptorsnociceptors

Which receptor category would a nociceptor fit into?Multiple Choicepressure receptorchemoreceptortemperature receptorphotoreceptor

Muscarinic and nicotinic receptors are receptors for which neurotransmitter?Multiple choice question.norepinephrineepinephrineacetylcholine

Proprioceptors are classified as which type of receptor?Multiple Choicemechanoreceptorscutaneous receptorsnociceptorsphotoreceptorschemoreceptors

Organs that have receptors for a specific hormone are referred to as which of the following?Multiple choice question.Target organsSelective organsEndocrine organsHormonal organs