Term
| located in the olfactory epithelium, |
|
Definition
|
|
Term
| What does the olfactory tract send |
|
Definition
| axons of the olfactory bulb neurons - send information to the brain from the olfactory bulb |
|
|
Term
| what 2 sets of neurons are involved in olfaction |
|
Definition
| 1st order and second order... 1 st is the olfactory receptors.. and 2 nd is the olfactory bulb neurons |
|
|
Term
| what is the olfactory pathway |
|
Definition
| the olfactory nerve, olf bulb, olf tract, primary olfactory, |
|
|
Term
| where do the olfactory axons project |
|
Definition
| to the limbic system and hypothalamus (acct for emot, and memory resp to odors) |
|
|
Term
| what are the 3 types of papillae |
|
Definition
| vallate papillae, fungiform papillae, foliate papillae |
|
|
Term
| papillae at the back of the tongue |
|
Definition
|
|
Term
| mushroom-shaped, scattered on tongue, ea has 5 taste buds |
|
Definition
|
|
Term
| sm trenches on the lateral margins of tongue, most buds degenerate in early childhood |
|
Definition
|
|
Term
| covers most of tongue, threadlike, last taste buds, tactile receptors |
|
Definition
|
|
Term
|
Definition
| oval body, consisting of 3 types of cells, supporting cellsgustatory receptor cells, basal cells |
|
|
Term
| long microvillus, projects from ea gustatory receptor cells through taste pore |
|
Definition
|
|
Term
| _____ synaps with the dendrites of the first order neurons |
|
Definition
|
|
Term
| neurons that form the first part of the gustatory pathway |
|
Definition
|
|
Term
| a palpebrae is a ______ and the functions are? |
|
Definition
| shade eye during sleep, protect eye from light, and obj, lubricates eyeball, |
|
|
Term
| detail the gustatory pathway |
|
Definition
medulla, axons carry taste signals to the limbic system and hypothalamus
-project to the thalamus, from the the thalamus, some project to primary gustatory area in parietal lobe... taste |
|
|
Term
| what are the accessory structes of the eye |
|
Definition
| lids, lashes, brows, lacrimal apparatus, extrinsic eye muscles |
|
|
Term
| structures that produce and drain tears (lacrimal fluid) |
|
Definition
|
|
Term
| maintains shape of eyeball, supplies O2, nutrients to lens and cornea,fills anterior cavity |
|
Definition
|
|
Term
| what is the purpose of the cornea and lens |
|
Definition
| to bend (refract) light for forcusing |
|
|
Term
|
Definition
| by refracting light with the cornea and lens |
|
|
Term
| what is the vitreous chanber |
|
Definition
| maintains the shape of the eyeball, |
|
|
Term
| his keeps the retina attached to the choroid |
|
Definition
|
|
Term
| this is the site where the optic nerve exits the eyeball, it lacks rods and cones |
|
Definition
|
|
Term
|
Definition
|
|
Term
| what 3 processes are involved for image formation |
|
Definition
| refraction of light rays, accomodation, constriction of the pupil |
|
|
Term
| how is a light ray refracted |
|
Definition
| the cornea and the lens refract light rays from distant obj by focusing the image on the retina, the image is inverted |
|
|
Term
| about ____% of the refraction of light occurs in the cornea |
|
Definition
|
|
Term
|
Definition
| when the eye is focusing on a close object, the lens becomes more curved ( the increase in curvature for near vision) |
|
|
Term
| a curve outward in accomodation is a ____ lens |
|
Definition
|
|
Term
| a _____ lens curves inward |
|
Definition
|
|
Term
| the increase in curvature for near vision is called |
|
Definition
|
|
Term
| accomodation is focusing on a close obj it becomes ______ curved,and it refracts ____ light |
|
Definition
|
|
Term
| how does the eye 'accomodate', the ___ muscle contracts... |
|
Definition
|
|
Term
| explain the ciliary process |
|
Definition
| pulls the ciliary process and choriod forward over the lens, release the tension on the lens and zonular fibers, lens becomes convex (elastic) |
|
|
Term
| constriction of the circular muscle causes ______ of the pupil |
|
Definition
|
|
Term
| what does constriction of the pupil do |
|
Definition
| block light rays, pupil also constricts light,- blurred vision |
|
|
Term
|
Definition
| allows for depth perception/ 3d, |
|
|
Term
| medial movement of the 2 eyeballs that both are directed toward a near obj in order to produce a single obj |
|
Definition
|
|
Term
| convergence is accomplished by |
|
Definition
|
|
Term
| optic part of eye is 2 parts, ?? |
|
Definition
| pigmented and neural layer |
|
|
Term
| the neural layer contains, 3 layers of retinal neurons/ the photoreceptor layer? |
|
Definition
| responds to light and contains the rods and cones |
|
|
Term
|
Definition
| allow us to see in dim light |
|
|
Term
| the rods contain pigment called? |
|
Definition
| rhodopsin,light-sensitive |
|
|
