Special Senses Drills Flashcards
The membrane that covers the outer surface of the eye and lines the eyelids is the ___.
Conjunctiva
The six muscles attached to the outer surface of the eye that produced gross eye movements and make it possible for the eyes to follow objects are the ___.
Extrinsic eye muscles
The area of sharpest visual acuity that normally contains only cones is the ___.
Fovea Centralis
The innermost sensory layer of the eye that contains bipolar cells and ganglion cells is the ___.
Retina
The lens divides the eye into two segments, the ___ and the ___ segments.
Anterior (aqueous); posterior (vitreous)
The biconvex structure that focuses light on the retina is the ___.
Lens
The eye condition resulting from the inability of the aqueous humor to drain from the eye is called ___.
Glaucoma
The upside-down image formed on the retina as a result of the light-bending activity of the lens is the ___.
Real image
Fibers from the medial side of each eye cross over to the opposite side of the brain at the___.
Optic chiasm
The overlapping of the two visual fields that provides for depth perception (3-D vision) results in ___.
Stereopsis (binocular vision)
Loss of the same side of the visual field of both eyes from damage to the visual cortex on one side only is called ___.
Hemianopia
Earwax is produced by ___.
Ceruminous glands
The structure that divides the outer ear from the middle ear is a membrane known as the ___.
Tympanic membrane (eardrum)
The stirrup bone of the internal ear is also known as ___.
Stapes
The cochlear nerve transmits impulses to the auditory cortex located in the ___.
Temporal lobe
A division of the cranial nerve, the ____ transmits information to the cerebellum about equilibrium.
Vestibular nerve
Tiny stones made of calcium salts that roll in response to changes in gravitational pull are called ___.
Otoliths
The serious inner ear condition that causes nausea, vertigo, and progressive deafness is called ___.
Meniere’s disease
The type of chemoreceptor responsible for our sense of smell is called ___.
Olfactory receptors
The small, peglike projections of the tongue’s surface are called ___.
Papillae
The three cranial nerves that carry taste sensations to the brain are ___.
VII (Faqcial)
IX (Glossopharyngeal)
X (Vagus)
“Crossed eyes” resulting from unequal control of the external eye muscles is called___.
Strabismus
The five taste sensations are ___.
Sweet. sour, bitter, salty, umami
True or False: The cornea is a transparent portion of the fibrous layer of the eye.
TRUE
True or False: The choroid consists of an outer, pigmented layer and an inner, neural layer which is home to rods and cones.
FALSE. The choroid does not contain rods and cones. Those are found in the retina.
True or False: The pupil is the circular opening in the iris through which light passes.
TRUE
True or False: Gross eye movements are produced by five extrinsic eye muscles attached to the outer surface of each eye.
FALSE. There are six extrinsic eye muscles.
True or False: We cannot see images formed on the optic disc.
TRUE
True or False: Cones enable vision in dim light.
FALSE. Rods allow for vision in dim light.