The type of thirst that occurs after eating salty food is called:     a. osmotic thirst.     b. dehydration thirst     c. barosensitive thirst     d. hypovolemic thirst   The branch of the autonomic nervous system that is responsible for preparing the body for “fight or flight” behaviors is called the:     a. sympathetic nervous system.     b. somatic nervous system.     c. parasympathetic nervous system.     d. craniosacral nervous system.   The enhancement of contrast at the edge of an object is the result of:     a. fatigue of the rods and cones     b. the diffraction of light from the edge's surface     c. lateral inhibition in the retina     d. the color of the object

Taste buds are sensory receptors for taste located on the tongue. When a person eats a spicy food, receptors on the tongue pick up a stimulus. The stimulus initiates the movement of ions across the membrane. If the threshold level is reached, an action potential is generated and a signal is sent to the brain telling the brain that the food is spicy. The reason that some individuals have a higher tolerance to spicy food than others is due to a difference in the a. duration of the refractory period b. number of Na+/K+ ion exchange pumps c. strength of the stimulus d. threshold level

Which of these is not a part of the enteric nervous system?a. ANS motor neuronsb. neurons located only in the digestive tractc. sensory neuronsd. somatic motor neurons

Multiple sclerosis (MS) is a degenerative disorder where the myelin sheath in the brain and spinal cord are destroyed. Symptoms are varied and MS is often difficult to diagnose. Often, one of the first signs of MS is poor or delayed motor function (some patients may experience difficulty retaining their urine, while others may experience difficulty moving their tongue or arms). come up with a hypothesis explaining why symptoms vary from person to person.