Receptors

Sensory receptors

Dendrites that react to external or internal stimuli in sensory organs.

Cutaneous sensations

Impulses produced in the skin, including touch, heat, cold, pressure, and pain.

Touch receptors

Various types of receptors in the skin, such as free nerve endings, Meissner corpuscles, Merkel's disks, hair follicle receptors, Ruffini's corpuscles, and Pacinian corpuscles.

External Anatomy of the Eye

Structures of the eye's external anatomy, including eyelids, conjunctiva, lacrimal glands, and tear drainage system.

Internal Anatomy of the Eye

Tissue layers of the eye (sclera, choroid, retina), cornea, iris, pupil, lens, aqueous humor, and vitreous humor.

Vision

Photoreceptors in the retina (rods and cones), retinal pigment epithelium, fovea centralis, blind spot, and near-sightedness and far-sightedness.

Hearing

Collection and transfer of sound vibrations through the ear, auricle, external auditory canal, ossicles (malleus, incus, stapes), oval window, cochlea, perilymph, basilar membrane, and organ of Corti.

Equilibrium and Chemical Senses

Maculae for static equilibrium, otoliths, semicircular canals for dynamic equilibrium, chemoreceptors for smell (olfactory receptors) and taste (gustatory cells), and papillae on the tongue.