Chapter 16 smartbook
The external layer of the eyeball is the ______ tunic.
fibrous
True or false: The eye is spherical, measuring about 2.5 centimeters in diameter, and most of it is receded into the orbit of the skull.
True
Hearing and equilibrium are transmitted along which cranial nerve? a. VII b. IX c. VIII d. X e. VI
VIII
Sensory receptors in which structures help monitor and adjust our equilibrium? Multiple select question. a. saccule b. semicircular ducts c. utricle d. cochlea e. auditory tube
a, b, c
Receptors of the human body convert stimulus energy into ______. a. chemicals b. an electrical signal c. mechanical energy
an electrical signal
Which cavity of the eyeball is divided into an anterior and posterior chamber?
anterior cavity
What chamber is between the iris and cornea? a. posterior chamber b. anterior chamber
anterior chamber
Optic tracts extend to which structures after they leave the optic chiasm? a. inferior colliculi b. the lateral geniculate nucleus of the thalamus c. superior colliculi d. the medial geniculate nucleus of the hypothalamus
b, c
Which are the characteristics of the cornea? Multiple select question. a. vascular b. avascular c. transparent d. opaque
b, c
The sclera _______. (2 answers) a. is made of loose connective tissue b. is made of dense connective tissue c. allows light to enter the eye d. provides for eye shape
b, d
When the ___ membrane moves, the ___ on the spiral organ hair cells distort because they are anchored by the tectorial membrane.
basilar, stereocilia
Gustatory cells are found in taste ______.
buds or receptors
Gustatory cells are ______. a. chemoreceptors b. photoreceptors c. mechanoreceptors
chemoreceptors
Which are part of the vascular tunic? a. sclera, cornea b. choroid, ciliary body, iris c. pigmented layer, neural layer
choroid, ciliary body, iris
The auditory sensory axons of the _____ branch of cranial nerve number _____ terminate in the cochlear nucleus within the brainstem.
cochlear; VIII
The limbus is the junction between the sclera and the ______. a. cornea b. choroid c. retina d. iris
cornea
Light rays are refracted or bent when they pass through two media of different ______. a. densities b. molarities c. colors d. solubilities
densitites
Which is an accessory structure of the eye? Multiple choice question. a. pupil b. lens c. iris d. eyebrow
eyebrow
The external layer of the eyeball is the ______ tunic. a. nervous b. vascular c. fibrous
fibrous
The term equilibrium refers to our awareness and monitoring of our _____ position.
head
What structure is the dividing line between the anterior and posterior chambers? a. iris b. cornea c. retina
iris
Tactile receptors are a type of ______. a. mechanoreceptor b. nociceptor c. thermoreceptor d. chemoreceptor
mechanoreceptor
tongue and soft palate house ____ and _____ to provide us with information about the texture and temperature of our food, respectively.
mechanoreceptors; thermoreceptors
Optic tracts ultimately are directed to the primary visual cortex in the ______ lobe. a. frontal b. temporal c. occipital d. parietal
occipital
Optic tracts ultimately are directed to the primary visual cortex in the ______ lobe. a. parietal b. temporal c. frontal d. occipital
occipital
The sense of smell is called ______. a. olfaction b. nociception c. proprioception d. gustation
olfaction
The sense of smell is called ______. a. proprioception b. gustation c. nociception d. olfaction
olfaction
The fat surrounding the eye is called ______ fat.
orbital; periorbital
Which are part of the retina? a. sclera, cornea b. choroid, ciliary body, iris c. pigmented layer, neural layer
pigmented layer, neural layer
Most of the eye is ______ the orbit of the skull. a. exterior to b. receded into
receded into
The area that a receptor cell gathers information from is called the ______. a. phasic receptor b. tonic receptor c. receptive field d. stimulus
receptive field
______ occurs when impulses from an organ are perceived as originating from the skin.
referred pain
______ occurs when impulses from an organ are perceived as originating from the skin. a. Phantom pain b. Referred pain
referred pain
The apparent distortion of the spoon in the water glass is due to the phenomenon called _____.
refraction
What structure makes up the posterior 5/6 of the fibrous tunic? a. cornea b. sclera c. iris
sclera
Which part of the eye is an attachment site for extrinsic eye muscles? a. cornea b. sclera c. lens
sclera
Which are part of the fibrous tunic? a. sclera, cornea b. choroid, ciliary body, iris c. pigmented layer, neural layer
sclera, cornea
Receptors for general senses are usually ______. a. simple in structure b. found in specialized sensory organs c. complex in structure
simple in structure
Receptors for general senses are distributed throughout the ______ and viscera. a. skin b. eyes c. ears d. bones
skin
Localization and sensitivity are easily determined in a ______ receptive field.
small
Mechanoreceptors located in the skin and mucous membranes are called ______ receptors. a. chemical b. tactile c. visceral
tactile
What is the most numerous type of receptor? a. visual receptors b. chemoreceptors c. proprioceptors d. tactile receptors
tactile receptors
gustation is the sense of ______.
taste
The middle and inner ear are in which bone? a. temporal bone b. occipital bone c. sphenoid bone d. ethmoid bone
temporal bone
A feature common to all receptors is ______. a. they are found in specialized sense organs b. the ability to respond to a stimulus c. they are always unicellular d. they are found on tips of axons
the ability to respond to a stimulus
The vascular tunic of the eye is also called the ______. Multiple choice question. a. iris b. uvea c. retina d. cornea
uvea
The vascular tunic of the eye is also called the ______. a. uvea b. cornea c. retina d. iris
uvea
The vascular tunic of the eye is also called the ______. a. uvea b. iris c. cornea d. retina
uvea
Which layer of the eye contains the blood and lymph vessels? a. vascular tunic b. retina c. fibrous tunic
vascular tunic
Receptors initiate sensory input to the ______. a. central nervous system b. peripheral nervous system c. skin d. muscles e. organs
CNS
Some individuals experience pain in their left shoulder during a heart attack. This is an example of _____ . a. referred pain b. phantom pain
referred pain
The cornea is _____. a. transparent b. opaque
transparent
Pain is an example of a _____ sense.
general
We use the sense of _____ to sample our environment for information about the food we will eat, the presence of other individuals in the room, or potential danger.
olfaction or smell
Olfactory receptors ______. a. perceive tastes b. perceive sounds c. maintain coordination and balance d. perceive odors
perceive odors
The external ear is located mostly on the outside of the body, while the middle and inner ear areas are housed within the ________ part of the temporal bone.
petrous
What type of receptor can undergo adaptation?
phasic
If stimulated over a period of time, _____ receptors lose eventually sensitivity.
phasic (adapting)