The first step in sensation for some sensory systems is the which modify incoming stimuli. a. sensory receptors b. accessory structures c. absolute thresholds d. thermoreceptors

The right answer is b. accessory structures.

The accessory element is an element in contact with the termination of the primary afference. It often consists of an encapsulated structure (usually a conjunctival sheath), a particular cytoplasmic coil around the afferent. This accessory element will deform, mechanically, when the stimulation arrives.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.