Ch.16 Flashcards
The color of light is determined by?
Wavelength
The retina receives its oxygen supply from capillaries of which layer?
The Choroid (Tunica Vasculosis)
The most finely detailed vision occurs when an image falls on a pit in the retina called what?
The Fovea Centralis
The only cells of the retina that generate action potentials are the?
Ganglion Cells
The retinal dark current results from the flow of ___________ into the receptors cells
Sodium Ions (Not Potassium)
The gelatinous membranes of the macula sacculi and the utriculi are weighted by the calcium carbonate and protein granules called?
Otoliths
The ________ is a tiny bone that vibrates in the oval window and thereby transfers sound vibrations in the inner ear
Stapes
Three rows of ________________ in the cochlea have V-Shaped arrays of stereocilia and tune the frequency sensitivity of the cochlea
Outer Hair Cells
The _______________ of the midbrain receive auditory input and trigger the head-turning auditory reflex
Inferior Colliculi
The apical stereocilia of a gustatory cell are called what?
Taste Hairs
Olfactory neurons synapse with the mitral cells and tufted cells in the ____________, which lies inferior to the frontal lobe.
Olfactory Bulb
In the phenomenon of _____________, pain from the viscera is perceived as coming from an area of the skin.
Referred Pain
Type of receptors that sense position in movements of the body are called?
Proprioception
Which of the following are not included as encapsulated nerve endings? Free Nerve ending Tactile (merkel) disks Hair receptors Pain Nerve Endings
All the above
Two types of receptors that can respond to pressure include?
Ruffini Corpuscles & Pacinian Corpuscles
The only tissue that does not contain any receptors is?
The Brain
The pigment that absorbs light in the rod photoreceptor?
Rohdopsin
Which type of taste bud papillae is located toward the rear of the tongue?
Circumvallate
What are the five primary sensations of taste?
Sweet, Salty, Sour, Bitter, Unami
Which cranial nerve is involved with receptors for taste in the palate, pharynx, and epiglottis?
Vagus Nerve (X)
Which cranial nerve is involved in the sense of taste for the anterior two thirds of the tongue?
(Vll)
In the olfactory sense, the first order neurons pass through which structure?
Cribriform plate
Which of the following cells are found in either taste buds or the olfactory epithelium?
Supporting Cells
Which of the following is the correct sequence of structures transmitting vibrations in the middle ear?
Tympanic Membrane (entering middle ear)> Malleus> Incus> Stapes> Membraneous oval window (leads to inner ear)
