One. Somatic Senses - provide sensory information about the body and the environment
One. Mechanoreceptors - mechanical stimuli
Three. Photoreceptors - light
Five. Nociceptors - sensation of pain
Seven. Touch receptors - structurally more complex; enclosed by capsules
Nine. Hair follicle receptors - light touch
Eleven. Ruffini corpuscles - continuous pressure in skin
One. Superficial Pain - localized; rapidly conducted action potentials
Neuronal Pathways for Olfaction
Neuronal Pathways for Taste
Two. Glossopharyngeal nerve (nine) - carries taste sensations from the posterior of the tongue
Four. Gustatory portion of the brainstem nuclei
Accessory Structures of the Eye
Inferior rectus - rolls eye downward
Medial rectus - turns eye inward. Oblique muscles - two muscles to the long axis; superior and inferior
· Inferior oblique - rotates clockwise
Two. Optic disc - white spot through which a number of blood vessels enter the eye;
Two. Focusing Images on the Retina
Neuronal Pathways for Vision
HEARING AND BALANCE Anatomy and Function of the Ear
Two. Middle Ear air filled chamber
Three. Inner Ear fluid filled chamber; for sound waves, balance, equilibrium
Neuronal Pathways for Hearing
Dynamic equilibrium semicircular canals; evaluating changes in the direction and rate of head movements
Neuronal Pathways for Balance
Effects of Aging on the Senses