Final answer:
The belief that senses are heightened during the active dying phase is false; instead, they typically decline. Olfactory receptors and hair cells are responsible for the sense of smell and hearing, respectively. Sensory information is conveyed to the CNS by cranial nerves.
Step-by-step explanation:
The statement that the active dying phase senses are heightened is false. During the active dying phase, a person's senses typically decline, and they may become less responsive to external stimuli. This occurs because the body is shutting down and conserving energy for the vital organs.
Specifically, the senses of smell and hearing have their respective sensory receptor cells known as olfactory receptors and hair cells. These receptor cells are chemoreceptors and mechanoreceptors, respectively, with olfactory receptors detecting chemical stimuli (smells) and hair cells detecting mechanical stimuli (sound waves).
It is also important to note that sensory information such as smell, taste, and sound are indeed carried to the central nervous system (CNS) by cranial nerves, which is true. The parasympathetic nervous system mentioned is actually a division of the autonomic nervous system, not the central nervous system.