Chapter 16: nervous system
Through which cranial nerve does gustatory nerve information travel?
- CN VII -CN IX
The structures of CN II in order from anterior to posterior
-1. Optic nerve. 2. Optic chiasm 3. tract
Which terms indicate a receptor type that is classified by its modality of stimulus
-Chemoreceptors (chemical) -Mechanorecptors ( touch/sound) -Thermoreceptors (Heat)
What structure is filled with pigment from melanocytes?
-Choroid
Which of the following are types of papillae?
-Filiform -Follate -Vallete -Fungiform
Which of the following are the functions of the ear?
-Hearing -Equilibrium
What type of receptor is found in smooth muscle of organs?
-Intereoceptors
Which are true of the conjunctiva?
-It does not cover the cornea -It is vascular -It contains goblet cells
What types of receptor detects changes in light?
-Photoreceptors
Where are mechanoreceptors found?
-Skin -Ear
Which are basic taste sensations?
-Sour -Sweet -Umami
Which of the following would stimulate somatic nocicereptors?
-Sprained ankle -Touching a hot pan -Exposure to acid on the skin
What is the function of the auditory ossicles?
-Transmit sounds waves to inner ear -Amplify sound
Which are true of the cornea?-
-Transparent -Avascular
Hearing and equilibrium are transmitted along which cranial nerve?
-VIII
Which pf the following are part of the fibrous of the fibrous tunic?
-cornea -Sclera
The sclera
-is made of dense connective tissue -provides for eye shape
Which of the following are cells found in the olfactory epithelium?
-olfactory cells -Basal cells -Supports cells
Structures of the eye in order from superficial to deep
1. Choroid 2.Photoreceptors 3.Horizontal cells 4.Bipolar cells
Auditory ossicles in order
1. Malleus 2. Incus 3. Stapes
Structures of the vascular tunic in order from anterior to posterior.
1.Iris 2.Ciliary body 3.Choroid
Order structures from superficial to deep:
1.Sclera 2.Choroid 3.Pigmented layer of retina 4.Neural layer of retina
Structures in the order that tears travel through them.
1.lacrimal puncta 2. Lacrimal canaliculus 3.Lacrimal sac 4.Nasolarimal duct
The tympanic cavity is filled with:
Air
Taste buds are made of gustatory cells, supporting cells and ___ cells
Basal
Receptors initiate sensory input to the
Central Nervous system
Gustatroy cells are
Chemoreceptors
_____ are receptors that detect chemicals?
Chemoreceptors
What is the name of the "snail-shaped" structure
Cochlea
The junction of the palpebral and ocular conjunctiva is called the
Conjunctival fornix
The auricle has ___cartilage that supports its structure
Elastic
The auricle sound waves into the bony tube called the
External auditory canal
Cutaneous receptors are a type of
Exteroceptors
The primary function of the _____is to prevent large objects from contacting the eye.
Eyelashes
T/F: The eye is spherical measuring about 5 centimeters in diameter and most of it is receded into the orbit of the skull
False
The lens is ____ when we are viewing faraway objects
Flattened
In a taste bud the basal cells replace the ____ cells
Gustatory
The vitreous body is also called the vitreous
Humor
What structure is the dividing line between the anterior and posterior chambers?
Iris
The ____ controls the size or diameter of the ___ and thus the amount of light entering the eye
Iris, Pupil
Where are proprioceptors found?
Joints
Tactile receptors are a type of
Mechanorecptors
A lack of photoreceptors in this structure creates the "Blind spot" ?
Optic disc
The fat surrounding the eye is called___ fat
Orbital
The lacrimal gland has a superior or ____ part and an inferior or ___ part
Orbital / palpebral
The eyelids are also called____
Palpebrae
What is the space behind the lens called?
Posterior cavity
As tears drain, through the lacrimal canucle, they enter small holes called the lacrimal ____
Puntca
Receptors for general senses are distributed throughout the ____and viscera.
Skin
Olfaction is the sense of
Smell
Where is the lacrimal gland located?
Superior and lateral to the eye
The____ ligaments connect the ciliary body to the lens
Suspensory
A feature common to all receptors is
The ability to respond to a stimulus
We have the ability to distinguish one odor among_____ of different ones.
Thousands
Neurons in the olfactory bulb travel through the olfactory ____to the brain.
Tracts
Hearing and our sense of balance comes form the stimulation of which cranial nerve?
Vestibulcochlear
The suspensory ligaments connect the _____ to the ciliary muscles.
lens
The___, the black hole in the eye, is surrounded by the colorful
pupil, iris