Chapter 16 Senses
Which are true of conjunctiva?
- it is vascular - it does not cover the cornea - it contains goblet cells
Each eye has ____ lacrimal puncta.
2
How many auditory ossicles are found in each ear?
3
Gustatory cells have a ____ lifespan.
7 - 10 day
Which are functions of the ear?
Equilibrium and hearing
The eye is spherical, measuring about 5 centimeters in diameter, and most of it is receded into the orbit of the skull.
False
Place the layers of the eye in order from superficial to deep. Retina Vascular tunic Fibrous tunic
Fibrous tunic, vascular tunic and retina
Which are true of conjunctiva? It is vascular. It contains goblet cells. It does not cover the cornea. It does not contain nerve endings.
It is vascular, it contains goblet cells, it does not cover the cornea
Place the auditory ossicles in the order that they occur from lateral to medial. Incus Malleus Stapes
Malleus, incus, stapes
Which terms indicate a receptor type that is classified by its modality of stimulus?
Mechanoreceptors, chemoreceptors, thermoreceptors
What structure is the "white" of the eye?
Sclera
What structure makes up the posterior 5/6 of the fibrous tunic?
Sclera
Unlike other sensory information, olfactory pathways do not project to the thalamus.
True
Which taste sensation translates as "delicious flavor" and is perceived as meaty flavor?
Umami
What type of papillae is largest and least numerous?
Vallate
The tympanic cavity is filled with _____.
air
The most visible part of the external ear is called the ____ or _______.
auricle and pinna
Gustatory cells are found in taste ______.
buds
Receptors initiate sensory input to the _____.
central nervous system
____ are receptors that detect chemicals.
chemoreceptors
What structure is filled with pigment from melanocytes?
choroid
When light hits the eye, the pupil _____ in bright light or _____ in dim light.
constricts dilates
A ____ shaped lens is used to treat hyperopia and a ____ shaped lens is used to treat myopia.
convex, concave
The limbus is the junction between the sclera and the ___.
cornea
Which are a part of the fibrous tunic?
cornea and sclera
The optic disc is associated with _____.
cranial nerve II
Where are mechanoreceptors found?
ear and skin
What type of receptor is found in the muccous membrane?
exteroceptors
The primary function of the ___ is to prevent large objects from contacting the eye.
eyelashes
Where are photoreceptors located?
in the neural layer of the retina
Where is the cochlea located?
inner ear
Specific types of receptors called ___ detect stimuli in the internal organs.
interoceptors
Where are tears created?
lacrimal apparatus
The suspensory ligaments connect the ___ capsule to the ciliary muscle.
lens
Lacrimal fluid prevents bacterial infection because it contains an antibacterial enzyme called ______.
lysozyme
The stimulating agent is also called the ____ of stimulus.
modality
The portion of the conjunctiva on the inside of the eyelid is called the ____.
palpebral conjunctiva
Which are correct names for the tube that connects the middle ear to the nasopharynx? Pharyngotympanic tube Auditory tube Eustachian tube External auditory tube
pharyngotympanic tube, auditory tube, eustachian tube
What is the space behind the lens called?
posterior cavity
The black hole in the eye is called the ____ and it is surrounded by the colorful _______.
pupil and iris
Tarsal glands are _____.
sebaceous glands
Receptors for general senses are distributed throughout the ___ and viscera.
skin
The cilliary muscles are made of _____ muscle.
smooth
Which auditory ossicle contacts the oval window?
stapes
Where is the lacrimal gland located?
superior and lateral to the eye
The external acoustic meatus terminates at the ___ membrane, which is most commonly called the eardrum.
tympanic
Which structures are part of the vestibular complex? Utricle Cochlea Semicircular ducts Saccule Middle ear
utricle, semicircular ducts, and saccule
The conjunctiva is ______.
vascular
Which layer of the eye contains the blood and lymph vessels?
vascular tunic
Hearing and our sense of balance comes from the stimulation of which cranial nerve?
vestibulocochlear
The two types of somatic nociceptors and ____ nociceptors.
visceral