Chapter 13 Flashcards
What do sensory receptors sense
Change in their surroundings
What do sensory receptors include
Chemoreceptors Nocireceptors Thermoreceptors Mechanoreceptors Photoreceptors
Sensations are what
Feelings resulting from sensory stimulation
What are the general senses and what are they associated with
Touch Pressure Temperature Pain Associated with receptors in skin, muscles, joints, viscera
What do special senses include and where are their receptors
Smell Taste Hearing Equilibrium Sight Have receptors within large complex sensory organs of the head
What do olfactory organs consist of
Receptors and supporting cells in nasal cavity
What do taste receptors consist of
Taste cells
Supporting cells
What are the five basic types of taste sensations
Sweetness Sourness Saltiness Bitterness Umami (deliciousness)
What work together to receive vibrations and create sound
Outer, middle, inner ear
What does the outer ear consist of
Auricle (pinna)
External acoustic meatus (external auditory canal)
Eardrum (tympanic membrane)
What does the middle ear (tympanic cavity) contain
Auditory ossicles (malleus, incus, stapes)connected to throat by auditory tube (Eustachian tube)
What is the complex inner ear important for
To establish sensory of equilibrium
What does the inner ear contain
Chambers, tubes that form bony labyrinth
Where does the bony labyrinth lie
Above a membranous labyrinth
What do the semicircular canals do
What do the cochlea do
Aids equilibrium
Functions in hearing
What does the sense of equilibrium consist of
Static and dynamic equilibrium
What happens in static equilibrium
Position of head is sensed while head and body are still
What happens in dynamic equilibrium
Motion is detected when head or body moves, rotates aiding balance
What is the dominant sense
The sense of sight
What are the three layers of the eye
Outer
Middle
Inner
Describe the outer layer of the eye
Fibrous
Anterior
Bulges forward to form transparent cornea
What does the cornea and lens of eyes do
Refract light waves to focus an image on the retina which transmits visual perceptions to brain
What makes up most of the outer layer
White coloured sclera
Describe the middle layer of eye
Called uvea
Vascular
Includes choroid coat, ciliary body, iris
