Sense Organs Flashcards
What is the function of sensory receptors
detect changes in the environment and covert them into electrical signals that can be processed by the nervous system
Describe a neuromast organ
small epithelial receptor organ
What is a lateral line
a visible line along the side of a fish consisting of a series of sense organs which detect pressure and vibration
What does a labyrinth usually consist of
cochleae, vestibule, and three semicircular canals
What are the functions of the labyrinth
help generate reflexes so people can see clearly when the head is moving
how does the labyrinth function in dynamic equilibrium
maintain proper head position in response to rotational motion
how does the labyrinth function in static equilibrium
maintenance of proper head position in response to change in linear motion
what is the tympanic membrane
ear drum- separates the middle and outer ear
What is the stapes
one of the three small bones inside the middle ear
What are the three bones inside the middle ear in mammals
the stapes, malleus, and incus
describe how pressure becomes sound
vibrations enter the ear which will get amplified by the middle ear and get sent to the inner ear that is filled with fluid
what do pit receptors detect
touch temp and pain
what are labial pits and which snakes have them
three or more small pits in the upper and sometimes lower lip- pythons and boas
what are the two types of photo receptors
rods and cones
What is the ampulla
three tubuler structures that connect to the utricle
What is the crista
senses that detect acceleration and deceleration
what is the macula
senses acceleration
What is the retina
light sensitivity layer of the tissue at the back of the eye
what is the choroid
middle layer of tissue on the wall of the eye
what is the sclera
white part of the eye
what is the iris
colored part of the eye
what is the pupil
an opening at the center of the iris where light passes
what is the cornea
outer most clear layer of the eye
what is the lens
clear elliptical structure that sits behind the pupil
what are the rods
photoreceptors black and white
what are the cones
photoreceptors color
what is the fovea
sm depression within the neurosensory retina where visual activity is the highest
What is accommodation
the eye’s ability to adjust its focus to see objects clearly
what are the two types of chemoreceptors
direct and distant
where are the receptors for olfaction located
small regions within the superior nasal cavity
what are basal cells
source of new olfaction receptor cells
what are supporting cells
produce mucus
what are olfactory receptor cells
sight of sensory transduction
structure of vomeronasal organ in amphibians
recessed area of nasal cavity
structure of vomeronasal organ in reptiles
separate pairs of pits
structure of vomeronasal organ in mammals
well developed turbine
what do taste buds detect
sweet, sour, bitter, salty, and umami
what cells make up taste buds
epithelial cells
what are naked nerve endings and what do they detect
free nerve ending and pain, temp and cold
what are encapsulated endings
nerves with a capsule
