Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
senses
organisms, detail of senses
| Question | Answer |
|---|---|
| first two steps of sensory perception? | Reception & Transduction |
| What is reception? | activation of sensory receptors by stimuli |
| What is transduction? | The conversion of a stimulus into an electrical signal |
| What is perception? | an individuals mapping of a sensation |
| Perception in detail is mapping of _______ ______ into the _______ _______ | sensory input, cerebral cortex |
| Olfactory stimuli does not travel through what? | Thalamus |
| 3 layers of skin | Epidermis, dermis,hypodermis |
| 5 sensory receptors | Mechanoreceptors, thermoreceptors, proprioreceptors, pain receptors, chemoreceptors |
| What does a mechanoreceptor detect? | Changes in mechanical pressure or distortion |
| What does a thermoreceptor detect? | Changes in temperature |
| What does a proprioreceptor detect? | Sense of movement in space |
| What does a pain receptor detect? | Potentially damaging stimuli. Noiception |
| What does a chemoreceptor detect? | chemical stimuli |
| What are free nerve endings? | encapsulated dendrite of sensory neuron |
| Most common nerve endings in skin? | free nerve endings |
| What are free never endings sensitive to ? | pain , hot, cold, touch |
| 3 classes of mechanoreceptors | tactile, proprioreceptors, barorecptors |
| 5 somasensations | merkels disk, meissners corpuscles, Krause end bulbs, pacinian corpuscles, ruffini endings |
| What is merkels disk? | respond to light touch (lips, fingertips, typing) |
| What is Meissners corpuscles? | in the fingertips allow for fine touch discrimination |
| What is Krause end bulbs? | detect cold |
| What is pacinian corpuscles? | respond to touch and high-frequency vibration |
| What are ruffini endings? | detect stretch, deformation, warmth, grip |
| gustation? | taste |
| olfacation? | smell |
| most interconnected senses? | smell & taste |
| 5 tastes that have their own receptors? | umami, sweet, bitter, salty, sour |
| Olfactory receptors (dendrite of specialized neuron) respond to ________. | specific odorants (odor molecules) |
| Pheromones are sensed by the _______ ________. | vomeronasal organ (VNO) |
| What are pheromones? | Chemical released by animals that affect behavior or physiology of animals of the same species |
| What is a taste bud? | A taste bud is a cluster of sensory receptors within tongue bumps (papillae). |
| How often are taste buds replaced? | Replaced every 10-14 days. |
| Filiform papillae. Are they tactile? What do they do? How many taste cells? | tactile. Moves food in your mouth. No taste cells |
| Fungiform papillae. How many taste buds? What do they do ? | contain 1-8 taste buds and detect temperature |
| Foliate. How many taste buds? Where are they found? | 1300 across region . Back of tongue. |
| What contains bulk of taste buds? | Foliate |
| circumvallate papillae. How many taste buds? | Up to 100 |
| Pores in the _______________allow tastants (food molecules) to reach the sensory receptors. From there, it the signal travels to the ______. | tongue epidermis. Medulla |
| audition? | hearing |
| Sound waves are _______ _________ ________. | mechanical pressure waves |
| wavelength corresponds to ______ (____) | pitch (hertz) |
| amplitude (decibels) corresponds to ______. | volume |
| What is ultrasound? How many hertz? | any frequency above what humans can hear (20k hertz) |
| Sound reception begins at the ______ _______ | Tympanic membrane |
| Outer ear consists of what 3 parts? | Pinna- “ear” Ear canal Tympanum-ear drum |
| Middle ear consists of ? 3 bones named together? Actual names of individual bones? | Three small bones called ossicles Malleus- hammer Incus- anvil Stapes- stirrup |
| pathway of vibration? | ear drum, malleus, incus, stapes, inner ear |
| What 4 parts make up the inner ear? | Round window, Labyrinth, Cochlea, Basilar membrane- runs the length of the cochlea and analyzes wavelengths |
| What is the round window? | thin diaphragm between inner and middle ear |
| What is the labyrinth? | bony hollow structure. Most interior part of the ear |
| What is the cochlea? | Cochlea- “snail shell” which conducts mechanical sound waves into electrical signal |
| What is the Basilar membrane? | runs the length of the cochlea and analyzes wavelengths |
| In the ear, what do soundwaves travel through? | Cochlea |
| Organ of Corti- composed of hair cells which are the primary ______ _______. | auditory receptors |
| Hair cells are anchored in _____ _____. | basilar membrane |
| The ear also processes what 3 things? | positional information about gravity, angular acceleration and deceleration |
| What is vision? | ability to detect light patterns from the outside environment and interpret them into images. |
| Light is ________ ______ of _____. | electromagnetic waves of energy |
| What do longer wavelengths mean? | lower frequency |
| What is the retina? | layer of photoreceptive and supporting cells on the inner surface of the back of the eye |
| Is the cornea transparent? What does it help focus on? Where is it located? | transparent layer over the front of the eye that helps focus light waves |
| Is the lens transparent or no? What does it help focus on? Where is it located? | transparent, helps focus light waves on the retina, behind cornea |
| What does the iris for to the eye? Where is it located? What does it regulate? | give it color, the front of the eye that regulates the amount of light entering the eye (pupil) |
| Where are rods located? What type of light do they respond to ? What type of vision do they give? Color? | rods are on outer edges of retina. Respond to low light (peripheral and night vision) and report shades of gray |
| Where are cones located? What type of color do they respond to? What type of vision do they give? | Cones found near center of retina. Respond to high intensity and respond with color (day vision) |
| Where is the fovea located? What type of vision does it give? | region in the back of eye with high density of cones. Responsible for acute vision |
| How many cones are there that respond to different wave lengths? What do they make possible? | 3 lengths of cones make color vision possible. |
| What are the 3 types of cones? | small, medium, large. have some overlap. |
| Photoreceptors in the retina fire at a ____ ______ ______ and strong stimuli can create an afterimage. | low constant rate. |
| What is tonic activity? | in a neuron, slight continuous activity while at rest |
Created by:
129bella
Popular Biology sets