Which of the following is a function of the vagus nerve? a. it supplies cardiac muscle and decreases heart rate b. it carries taste and somatic sensation from the epiglottis and pharynx c. it carries information about blood pressure, blood pH and stretch in respiratory structures d. it controls the muscles involved in swallowing, coughing and voice production e. all of these choices are functions of the vagus nerve

e. all of these choices are functions of the vagus nerve

The vagus nerve, also known as the tenth cranial nerve or CN X, is one of the most complex nerves in the human body and has multiple functions. It is extensively involved in the parasympathetic division of the autonomic nervous system, which oversees a wide array of crucial bodily functions.

a. The vagus nerve indeed supplies cardiac muscle and has the effect of decreasing heart rate when it is activated.

b. It also carries taste from the epiglottis and somatic sensations from the pharynx, which include sensations from the throat area.

c. The nerve carries information regarding various physiological parameters such as blood pressure, blood pH, and the stretch in respiratory structures, which is vital for regulating breathing patterns.

d. The vagus nerve significantly influences the control of muscles involved in swallowing, coughing, and voice production, which are important for speech and the safe consumption of food and liquids.