the five senses Flashcards
what is the organ of sight?
the eye
retina contains…
photoreceptors
- cones (color)
- rods(light)
- rods and cones concentrate on the macula
lens…
refracts light and focuses it onto the RETINA by CHANGING SHAPE
cornea…
refracts light and focuses it on RETINA, but it is FIXED
the cornea is covered by…
Conjuncitiva, which protects the eye
what protects the eye
conjunctiva
Iris
is the pigmented muscular layer, which controls the amount of light that enters the eye that enters through the pupil.
what controls the amount of light that enters through the pupil?
iris
what is the organ of smell
the nose
where do olfactory receptors reside?
in the nasal mucosa layer of the roof of nasal cavity
ciliated cells in the nose detect…
chemicals that get dissolved in the mucus
organ of taste is..
the tongue
5 tastes, that taste buds can detect
- sweet
- salty
- sour
- bitter
- umami(savoury)
organ of hearing
ear, more specifically the cochlea
sound waves travel up…
the ‘external auditory canal’ to the ‘tympanic membrane(aka.ear drum)’
the tympanic membrane…
vibrates to magnify the sound waves across the ‘ossicles’ of the middle ear
the oval window transmits vibrations to…
the cochlea, which contains ciliated cells that convert the waves into nerve impulses at the ‘organ of corti’
cochlea
contains ciliated cells that convert the waves into nerve impulses AT the ‘organ of corti’
what are the organs in the ear that aid in balance?
‘vestibule’ and ‘canals’
what is the organ of touch?
the skin
touch can be divided into which different sensations
touch, pain, heat, cold, pressure, vibration
what receptor senses touch?
meissner’s corpuscles
what receptor senses pressure?
Pacini’s corpuscles
what receptor senses changes in temperature?
Ruffini’s corpuscles
Krause’s corpuscles sense..
cold, but there is some sources that suggest it senses vibration and pressure
what receptor senses potentially damaging stimuli
Nocireceptors
what receptor senses pain
nocireceptors
