chapter 16
Each eye has ___ lacrimal puncta
2
What is the name of the elevated region of the ampulla of the semicircular canal?
Crista ampullaris
Which are true of the olfactory hairs? They extend from the olfactory tract. They are immobile. They are unmyelinated.
They are immobile. They are unmyelinated.
The tympanic cavity is filled with _____
air
The semicircular ducts are involved in detecting _______ acceleration
angular
Which cavity of the eyeball is divided into an anterior and posterior chamber?
anterior cavity
What type of fluid is found in the anterior cavity of the eyeball?
aqueous humor
What type of photoreceptors detects color?
cones
Light rays are refracted or bent when they pass through two media of different ______.
densities
The outmost layer of the eye is called the ______ tunic.
fibrous
The lens is ______ when we are viewing faraway objects.
flattened
What disease causes fluid build up in the eye, dislocating the lens?
glaucoma
Which may result in symptoms such as reduced field of vision, dim vision, and/or halos around lights? myopia astigmatism macular degeneration glaucoma
glaucoma
Where are photoreceptors located?
in the neural layer of the retina
What structure is the dividing line between the anterior and posterior chambers?
iris
Pacinian corpuscles are also called ______.
lamellated corpuscles
The optic disc contains ______ photoreceptors.
no
The sphincter pupillae is controlled by the ______ division of the nervous system.
parasympathetic
What type of receptor monitors changes in body position?
proprioception
The types of the receptor that include only the somatic sensory receptors within joints, muscles, and tendons are called
proprioceptors
The lens is ______ when we are viewing close-up objects.
rounded
The vestibule contains two structures, the utricle, and
saccule
Which auditory ossicle contacts the oval window?
stapes
Somatic receptors are found within ______.
the body wall
The vascular tunic of the eye is also called the ______
uvea
Which layer of the eye contains the blood and lymph vessels?
vascular tunic
Which are true of rods? They function well in dim light. They are concentrated at the visual axis of the eye, near the center of the retina. They discriminate between colors. There are more than 100 million rod cells per eye. They provide a crisp, focused vision.
They function well in dim light. There are more than 100 million rod cells per eye.
Sound waves are funneled into the ear by the ______.
auricle
Which type of receptor detects pressure changes? nociceptors thermoreceptors chemoreceptors baroreceptors
baroreceptors
Receptors that detect chemicals are called
chemoreceptors
The optic disc is associated with ______.
cranial nerve II
Which are the correct names for the tube that connects the middle ear to the nasopharynx? eustachian tube pharyngotympanic tube external auditory canal auditory tube
eustachian tube pharyngotympanic tube auditory tube
What type of receptors detects deep pressure and vibration?
lamellated corpuscles
The nasolacrimal duct is found on the ______ side of the nose.
lateral
The utricle and saccule are involved in functions involving the position of the head? linear acceleration hearing static equilibrium angular acceleration
linear acceleration static equilibrium
A lack of photoreceptors in this structure creates the "blind spot"?
optic disc
If stimulated over a period of time, _____________ receptors lose eventually sensitivity.
phasic
Aqueous humor is secreted into the _______ chamber before traveling to the _______ chamber of the eye.
posterior ; anterior
The sclera ______. allows light to enter the eye is made of loose connective tissue provides for eye shape is made of dense connective tissue
provides for eye shape is made of dense connective tissue
As tears drain through the lacrimal caruncle, they enter small holes called the lacrimal
puncta
Which structures are part of the vestibular complex? saccule utricle cochlea middle ear semicircular ducts
saccule utricle semicircular ducts
Localization and sensitivity are easily determined in a ______ receptive field
small
Tactile cells associated with tactile discs are located in the ______. Multiple choice question.
stratum basale
True or false: It is the utricle and saccule that inform your brain that your head is upright.
true
Olfactory receptor cells are ______ neurons.
bipolar
What type of receptor detects molecules dissolved in fluid?
chemoreceptors
The auditory sensory axons of the _______ branch of cranial nerve number ___________ terminate in the cochlear nucleus within the brainstem.
cochlear ; VIII
The cochlea has three fluid-filled ducts. Which are the names of these ducts? cochlear duct tectorial membrane semicircular duct scala vestibuli scala tympani
cochlear duct scala vestibuli scala tympani
The receptors for the special senses are found within the ______
cranium
What is the name of the gelatinous dome with embedded stereocilia of the semicircular canal?
cupula
Accommodation is the process of making the lens ______.
more spherical
The vibration of the tympanic membrane causes ______.
movement of the ossicles
What type of receptor can undergo adaptation?
phasic
A flattened dendritic disc is a type of unencapsulated receptor called a ______.
tactile disc
Tactile cells are associated with ______.
tactile discs
Stretch receptors in the stomach would be classified as what type?
visceral sensory
In the eye, the ________ humor is gelatinous
vitreous
The posterior cavity contains the ______ humor.
vitreous
When the ________ membrane moves, the ________ on the spiral organ hair cells distort because they are anchored by the tectorial membrane.
basilar ; stereocilia
The area that a receptor cell gathers information from is called the ______.
receptive field
Which are a part of the fibrous tunic? sclera cornea iris
sclera cornea
When a figure skater does a lengthy spin on the ice, it is the sensory receptors in her ______ canals of the inner ear that are informing her brain about the position of her moving head.
semicircular
What are the functions of the auditory ossicles? funnel sound into the ear canal transmit sounds waves to inner ear open the tympanic membrane amplify sound
transmit sounds waves to inner ear amplify sound