The fundamental purpose of any sensory receptor, this is the conversion of one form of energy to another

Another word for taste, this begins with the chemical stimulation of sensory cells clustered in about 4,000 taste buds

Regarding the nature of sounds, this is our sense of whether a sound is "high" or "low"

This is the perception of objects in the environment by means of the light they emit or reflect.

These types of nerve endings are dendrites with no connective tissue wrapping. They include free nerve endings, tactile discs, and hair receptors.

One of the 4 kinds of information transmitted by sensory receptors, this refers to how severe or minor a stimulus is

One of the 5 primary sensations, this sensation is due to acids

Known as the organ of hearing, this is a coiled tube in the inner ear that arises from the anterior side of the vestibule

One of the 3 kinds of photoreceptor cells, these cells are responsible for night vision and produce images only in shades of gray

One of the two types of nociceptors corresponding to different pain sensations, this type of pain has a feeling of sharp, localized, stabbing pain perceived at the time of injury.

One of the two types of senses, this type of sense are limited to the head, are innervated by the cranial nerves, and employ relatively complex sense organs

Also known as the sense of smell, this is the response to airborne chemical in the nasal cavity

The middle chamber of the 3 fluid filled chambers of the cochlea, this triangular space contains endolymph

Found in the vasuclar layer of the eye, this is an adjustable diaphragm that controls the diameter of the pupil

Phenomenon that results from the convergence of neural pathways in the CNS.

This happens if the stimulus is prolonged, the firing of the neuron gets slower over time, and with it, we become less aware of the stimulus.

One of the 4 types of lingual papillae, this papillae is weakly developed in humans and typically degenerates after the age of 2

Located in the outer ear, this is a sticky substance that coats the guard hairs making them more effective in blocking foreign particles from the auditory canal

A transparent mucous membrane that covers the inner surface of the eyelid and anterior surface of the eyeball, except for the cornea.

The most potent pain stimulus, this stimulus hurts intensely when injected under the skin and makes us aware of injuries but also activates a cascade of reactions that promote healing.

Type of receptor that generates a burst of action potentials when first stimulated, then quickly adapt and sharply reduce or stop signaling even if the stimulus continues.

These type of odorants diffuse freely through the mucus of the olfactory epithelium and bind directly to a receptor.

Made up of a thick epithelium of sensory and supporting cells and associated membranes, this is what converts vibrations into nerve impulses

A state in which the eye is relaxed and focused on an object more than 20 ft away, the light rays coming from that object are essentially parallel, and the rays are focused on the retina without effort.

A type of encapsulated nerve ending, this is found in the skin and has phasic receptors for light touch and texture