ZOOL 2403 Boros lecture Exam 3 Study Questions and Answers Graded A With Complete Solutions 2024

5 special senses - olfaction, taste, vision, hearing, equilibrium and balance where is the olfactory pathway located? - on the temporal lobe of the cerebral cortex what is the pathway of odor the olfactory cortex? - odor goes to the olfactory receptors, pass through cribriform plate of ethmoid bone, CN I synapses on neurons in olfactory bulbs, whose axons form olfactory tract, and then goes to the olfactory cortex gustatory (definition) - taste Where are taste receptors located? - deep in the grooves of taste buds what are the 6 primary taste sensations? - sweet, salty, sour, bitter, umami, and water describe the gustatory pathway - taste goes to taste receptors->CHs->medulla->gustatory cortex What are the two nerves associated with the gustatory pathway? - Facial nerve (CN VII): anterior 2/3 of tongue Glossopharyngeal (CN IX): posterior 1/3 of tongue how many layers of the eyeball are there - 3 what kind of connective tissue makes up the outer layer of the eyeball? - dense connective tissue what kind of connective tissue makes up the middle layer of the eyeball? - loose connective tissue layer what kind of tissue makes up the inner layer of the eye? - nervous tissue layer called retina what is the sclera and where is it located in the eye? - white sheath that protects the eyeball; fibrous tunic that surrounds the eye what is the cornea and where is it - its the transparent anterior continuation of the sclera that protects the lens its AVASCULAR (therefore it can be transplanted) what is the choroid? - layer surrounding the eye that contains blood vessels that supply oxygen and nutrients to the tissues of the eye what is the ciliary body , where and what does it do - anterior continuation of the choroid, contains smooth muscle (ciliary muscles) that controls the shape of the lens for focusing an object what is the iris and what is its primary function? - the iris is smooth muscle surrounding the pupil, giving eye color and changes pupil size to regulate amount of light entering/exiting eye what is the retina? - inner layer of nervous tissue within the eye that contains photoreceptors (rods and cones) What are rods and where are they found? - -receptors activated by dim light -used for night vision -black and white vision -used for peripheral vision --found in the retina What are cones and where are they found? - -receptors activated by bright light -used for daylight vision -color vision -used for central vision --found in the retina what layer of the eye is the choroid located? - the middle layer what layer of the eye is the sclera located in ? - outer layer what layer of the eye is the ciliary body located? - middle layer