Balance is not a primary sense, but rather a sense that helps us maintain our equilibrium.

The cornea is the clear, front part of the eye that helps to focus light on the retina.

The cochlea is a spiral-shaped organ in the inner ear that is responsible for hearing.

The olfactory bulb is a structure in the brain that receives signals from the nose and sends them to the brain.

Papillae are small, raised structures on the tongue that contain taste buds.

The somatosensory cortex is a region of the brain that processes touch sensations.

Thermoreceptors are not mechanoreceptors, but rather receptors that respond to changes in temperature.

The vestibular system is a sensory system that helps us maintain balance.

Nociceptors are not chemoreceptors, but rather receptors that respond to pain.

The retina is a layer of tissue at the back of the eye that converts light into electrical signals.

Ganglion cells are not photoreceptors, but rather neurons that transmit signals from the retina to the brain.

The middle ear is a cavity in the ear that amplifies sound waves.

Bitter is not a taste, but rather a sensation that is caused by certain chemicals.

The Eustachian tube is a canal that connects the middle ear to the throat. It helps to equalize air pressure between the two spaces.

Free nerve endings are not touch receptors, but rather receptors that respond to pain, temperature, and other stimuli.