The Senses Flashcards
What are the 5 primary senses
smell, touch, taste, sight, hearing
What are the three types of receptors?
chemoreceptors, photoreceptors, mechanoreceptors
Which senses use chemoreceptors?
taste and smell
Which senses use photoreceptors?
sight
Which senses use mechanoreceptors
hearing and touch
What part of the eye adjusts your focus?
the lens
What part of the eye controls the amount of light that enters the eye?
the pupil
What part of the eye controls the pupil?
the iris
What part of the eye receives the light and contains the rods and cones?
the retina
What type of photoreceptor perceives color?
the cones
What type of photoreceptor perceives tone and depth?
the rods
What colors does the eye perceive?
red, blue, and green
Where is a visual image processed in the brain?
the visual cortex
What is the sense of smell called?
the olfactory sense
Where are the olfactory chemoreceptors located?
In the olfactory bulb, inside the nasal cavity
How many olfactory neurons are there?
About a 1000
How many unique smells can the human body distinguish?
Over 4000
What is the term that refers to the different combinations of olfactory neurons that a molecule can trigger?
combinational diversity
What are the pieces of the inner ear?
the pinna, the ear canal, and the ear drum
What are the three bones in the middle ear?
The hammer, anvil, and stirrup
What is the snail-shaped structure that contains the mechanoreceptors that translate vibration into action potentials?
the cochlea
What is the cortex that translate the signal from the auditory nerve?
the auditory cortex
What is the purpose of the three bones of the ear?
to increase the vibration received from the ear drum
What is your sense of smell called?
your gustatory sense
What are the five flavors your taste buds can identify?
sweet, sour, salty, bitter, umami (savory)
What other sense is highly connected to your sense of taste?
your sense of smell
What is the nerve that carries the signal from your taste buds to your brain?
The glossopharyngeal nerve
What type of receptors is your sense of touch composed of?
mechanoreceptors
What cortex in the brain receives and acts in reaction to touch signals from the body?
somatosensory cortex
What part of the brain sorts and processes the different touch signals before sending them to the somatosensory cortex?
the thalamus
What are the primary sensations that the major types of mechanoreceptors receive?
light touch, deep touch, vibration, pain/heat/cold
