Exam 16: Sense Organs

Sensory receptors sense only stimuli external to the body,such as light,sound waves,smell,and touch.

Which of the following are unencapsulated endings?

Which of the following is not an analgesic (pain reliever)found naturally in the central nervous system?

Nerve fibers from all regions of the retina converge on the __________ and exit the eye by way of the optic nerve.

Which taste sensation is produced by amino acids such as aspartic acid and glutamic acid?

Which structure allows upper respiratory infections to spread from the throat to the tympanic cavity?

What is a sensation?

Which of the following structures is visible to the naked eye?

Half of the fibers of each optic nerve decussate at the __________.

What are the first-order neurons in the visual pathway?

Which of the following is not involved with spinal gating of pain signals?

Which of the following structures houses the spiral organ?

Light falling on the retina is absorbed by rhodopsin and photopsin in the pigment epithelium.

When you view objects close to the eye,the eye makes an adjustment called __________.

The macula sacculi is nearly horizontal and the macula utriculi is nearly vertical.

Which of the following structures belong to the inner ear?

Taste signals travel from the tongue through the facial and glossopharyngeal nerves.

What is the only sense in which signals can reach the cerebral cortex without passing first through the thalamus?

What are the only retinal cells that produce action potentials?

Why do cones exhibit less neuronal convergence than rods?