Human Anatomy & Phys. II Flashcards
What influences the sense of taste besides “taste”?
smell,texture,temperature
What type of receptors are involved in gustation and olfaction (i.e., what sort of stimulus is converted into an electrical signal?)?
chemoreceptors
What is the olfactory epithelium and where is it located?
organ of smell located in the roof of the nasal cavity
What structure of the lacrimal apparatus actually produces lacrimal fluid?
the glands
Where does the lacrimal fluid go after it bathes the eye?
secreted into the eye superior laterally, drains medially by two canals into the sacs, then nasolacrimal ducts
Define: cornea
Bump over the iris.
Define: conjunctiva
Transparent mucus membrane that covers the anterior portion of the eye with exception of the cornea, also covers the inside of the eyelids.
Define:sclera
White if the eye, “tough outer layer”.
Define:iris
This is mainly composed of smooth muscle arranged into two layers; controls pupil diameter.
Define: ciliary body
Mainly composed of smooth muscle fibers, which attach to the lens.
Define: retina
(sensory tunic), covers the entire eye interiorly except for the ciliary body and lens and the optic disc
Define: optic disc
Where the optic nerve exits the eye, is a weak spot in the fundus ( posterior wall) of the eye because it is not reinforced by the sclera.
What is the role of the rods and cones in vision?
Rods: good in low light, more color, low resolution
Cones: lots of light needed, no color, low resolution, preferial vision
What is the technical name for the ear drum?
tympanic membrane
What connects the middle ear to the nasopharynx?
auditory tube
