SENSORY SYSTEM Flashcards
2 basic groups of senses
special senses
general senses
types of general senses
somatic senses
visceral sensesw
what is the difference between somatic and visceral senses
somatic senses detect sensory information about the body and environment
visceral senses detect sensory information about pain pressure within internal organs
these senses provide sensory information from the muscles, joints, and skin
somatic senses (general)
these senses provide sensations of pain and pressure from the internal organs
visceral senses (general)
SOMATIC OR VISCERAL
temperature
somatic
SOMATIC OR VISCERAL
headache
visceral
SOMATIC OR VISCERAL
proprioception
somatic
SOMATIC OR VISCERAL
touch
somatic
SOMATIC OR VISCERAL
abdominal pain
visceral
SOMATIC OR VISCERAL
napaso ka
somatic
what are the special senses
smell (olfaction), taste, vision, hearing, balance
SOMATIC OR VISCERAL
vibration
somatic
SOMATIC OR VISCERAL
itch
somatic
this type of senses have receptors distributed over a large part of the body
general senses
this type of senses have receptors localized within specific organs
special senses
these are sensory nerve endings or specialized cells capable of responding to a stimulus by developing action potentials
sensory receptors
types of sensory receptors
mechanoreceptors
chemoreceptors
photoreceptors
thermoreceptors
nociceptors
touch receptors
types of thermoreceptors
cold receptors
warm receptors
types of touch receptors
merkel disks
hair-follicle receptors
meissner corpuscles
ruffini corpuscles
pacinian corpuscles
these are small, superficial nerve endings involved in detecting light touch and superficial pressure
merkel disks
these are involved in detecting light touch and are associated with hairs
hair-follicle receptors
these are receptors for fine, discriminative touch and are located deep within the epidermis
meissner corpuscles
these receptors are very specific in localizing tactile sensations
meissner corpuscles
these are deeper tactile receptors that play an important role in detecting continuous pressure in the skin
ruffini corpuscles
these are the deepest touch receptors and are associated with tendons and joints
pacinian corpuscles
which touch receptor type relays information concerning deep pressure, vibration, and body movement (proprioception)
pacinian corpuscles
group of unpleasant perceptual and emotional experiences
pain
this type of pain is commonly sensed when deeper structures such as internal organs are damaged or inflammed
referred pain
what is referred pain
type of pain that is perceived to originate in a region of the body that is not the source of the pain stimulus
which sensory receptor is responsible for olfaction (smell)
chemoreceptors
which sensory receptor is responsible for vision
photoreceptors
which sensory receptor is responsible for hearing
mechanoreceptors (sound waves)
which sensory receptor is responsible for taste
chemoreceptors
which sensory receptor is responsible for balance
mechanoreceptors (gravity/motion)
TRUE OR FALSE
in olfaction, odorants BIND to the RECEPTORS to initiate action potentials
TRUE
the sequence for the neuronal olfactory pathway
olfactory buld -> olfactory tract -> olfactory cortex
these are sensory structures that detect taste stimuli
taste buds
where are taste buds located
on the surface of certain papillae on the tongue
types of taste sensations
sour
salty
bitter
sweet
umami
cranial nerves that carry taste sensations to the brain
facial nerve (anterior 2/3)
glossopharyngeal nerve (posterior 1/3)
vagus nerve (root of the tongue)
components of the visual system
eyes
accessory structures
sensory neurons
these help protect, lubricate, and move the eye
accessory structures
hollow, fluid-filled sphere
eyeball
what are the layers of the eyeball called
fibrous tunic
vascular tunic
nervous tunic
components of the fibrous tunic
sclera
cornea