chapter 17
Nerve impulses for the sense of hearing are initiated in the spinal organ (organ of Corti) and then travel through the ____ to the cochlear nuclei in the ______
cochelear branch of cranial nerve VIII; medulla oblingata
The _____ regulates the amount of light entering the eyeball through the pupil
iris
In the olfactory pathway, axons of the mitral cells form the ____. The axons project to the _____.
olfactory tract; cerebral cortex and limbic system
olfactory epithelium is found
only in the superior portion of the nasal cavity
What is the actual site of hearing ?
organ of corti
Structure in the inner ear that send impulses for balance and equilibrium
semicircular canals
Which of the following is NOT considered a special sense ?
talk
Special senses allow the body to react to the environment ?
true
What ear structure vibrates back and forth when sound waves strike?
tympanic membrane
Which of the following nerves conducts impulses associated with the sense of gustation ?
vagus, facial, glossopharyngeal
Which structures are associated with equilibrium? Select all that apply
vestibule saccule semicircular ducts ampullae
What lies between the lens and the retina?
vitreous chamber
How many extrinsic eye muscles are responsible for moving each eye?
6
Provide for the sense of taste
Gustatory cells
What cranial nerves are associated with olfactory glands ? select all that apply
Olfactory and facial
The layer in the eye that contains the photoreceptors (cones and rods) is the:
Retina
Which statement accurately describes the changes in the membrane potential of a photoreceptor cell when light rays strike its photopigments ?
The photoreceptor cell undergoes hyperpolarization.
This portion of the ear is responsible for directing sound waves into the eardrum.
a. Outer Ear
The first step in the visual transduction process that occurs in the retina is
absorption of light by photopigments