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50 terms

Chapter 10: The Senses

STUDY
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The general senses
Involve receptors that are relatively simple and are found in the skin and deeper tissues
The receptors stimulated by pressure or movement changes ar called
Mechanoreceptors
Free nerve endings control the sensation of
Itching
Meissner's (tactile) corpuscles are sensitive to
Light touch
Sensory receptors that respond to heavy pressure called
Pacinian corpuscles
Gustatory receptors are located
on the tongue's surface
Primary taste sensations are
4
The sensory portion of the gustatory organ is (are) the
taste hairs
The tip of the tongue is the site of taste cells for
sweetness
The branch of the cranial nerves which is responsible for monitoring changes in equilibrium is
The vestibular branch
How many semicircular canals are in the inner ear?
3
The sense of hearing is provided by the receptors of the
inner ear
The malleus bone is attached to the
tympanic membrane
The basic receptors in the inner ear are the
hair cells
A structure that allows the connection of the middle ear to the nasopharynx is the
auditory tube
The vibrations received by the ear are amplified by the action of the
auditory ossicles
The ossicles connect the
tympanic membrane to the oval window
Which of the following extrinsic eye muscles is responsible for enabling the ey to look upward?
inferior oblique
Which of the following extrinsic eye muscles is responsible for rotating the eye away from midline?
Lateral rectus
The lacrimal glands
produce tears, are located in the pockets in the frontal lobes, flow tears into the nasolacrimal duct, and contain a hormone called lysozyme; all of the above
Gustatory receptors are clustered in individual _____________ _____________
taste buds
The sense of smell works closely with the sense of _____________
taste
Substances involved in _____________ reception are called enkephalins.
pain
Each gustatory cell extends a ________ _____________ into the surrounding fluids through a narrow taste pore.
taste hair
The sensory hair cells of the cochlear duct are located in the _____________ _____________ _____________.
Organ of corti
The tympanic membrane is also called the _____________.
eardrum
Vibrations of the stapes moves fluid within the inner ear to _____________ hearing receptors.
stimulate
The _____________ is a mucosmembrane lining the inner eyelids.
conjunctiva
The lacrimal apparatus contains the lacrimal _____________.
gland
The _____________ extrinsic muscles move the eye in many directions.
6
The outer layer of the ey bulges forward to form the _____________.
cornea
The middle layer of the ey includes the choroid coat, ciliary body, and _____________.
Iris
The lens of the eye adjusts it's shape to focus in a process called _____________.
accomodation
The retina contains the visual receptor cells, called _____________.
Photoreceptors
The posterior cavity is filled with a clear, jelly-like fluid called_____________ _____________.
Vitreous humor
Rhodopsin is a light sensitive biochemical in rods that is also known as _____________.
purple
Color blindness occurs when certain _____________ pigments are lacking.
cone
Taste organs lie along the sides of epithelial projections called _____________.
papillae
The space between the suspensory ligaments and the iris is the _____________ chamber.
posterior
The center of vision is located in the _____________ lobe.
occipital
Pacinian corpuscles respond to heavy pressure.
True
The porterior horn of the spinal cord releases enkephalins to suppress pain impulses of various severities.
True
The auditory ossicles are located in the inner ear.
False - Outer ear
The osseus labyrinth is a bony canal inside the occipital bone.
False - Temporal bone
Cochlear hair cells serve as receptors for sound.
True
The sense of equilibrium consists of static equilibrium and dynamic equilibrium.
True
The conjunctive is a mucous membrane lining the inner ear.
False - Inner eyelids
The six extrinsic muscles move the eye in many directions.
True
The outer layer of the eye is the choroid coat.
False - Sclera
Many suspensory ligaments hold the transparent lens in position behind the iris and pupil.
True