Chapter Eleven: Vision, Hearing, Gustation, + Olfaction Flashcards
Superior and inferior lids are also known as…
Palpebrae
…is the intersect of the Iris and the Sclera
Limbus
The…is the colored part of your eye
Iris
The…is the white part of your eye
Sclera
The Iris is a set of what two intrinsic muscles?
Radial
Sphincter
The…is actually empty where light travels to the Retina
Pupil
What is this?
- clear structure protecting the anterior chamber of the eye from foreign objects
- retract light and focus it onto the retina
Cornea
Tears drain into the…
caruncle
What are the seven “stops” in the flow of tears?
- Lacrimal Gland
- Lacrimal Ducts
- Lacrimal Caruncle
- Lacrimal Canal
- Lacrimal Sac
- Nasolacrimal Duct
- Nasal Cavity
What two glands and what caruncle secreted lipid and protein rich secretions that moisten and protect the eye?
Ciliary Glands
Tarsal Glands
Lacrimal Caruncle
Name the 6 Extrinsic Muscles of the eye:
- Superior Rectus
- Inferior Rectus
- Medial Rectus
- Lateral Rectus
- Superior Oblique
- Inferior Oblique
What oblique extrinsic muscle of the eye moves the eye inferior and lateral?
Superior Oblique
What oblique extrinsic muscle of the eye moves the eye superior and lateral?
Inferior Oblique
What are the two cavities of the internal eye?
Anterior and Posterior Chamber
What cavity of the eye contains aqueous humor?
Anterior Chamber
What cavity of the eye contains vitreous humor?
Posterior Chamber
Name the three tunics of the internal eye (superficial to deep):
Sclera
Choroid
Retina
What tunic of the internal eye is fibrous?
Sclera
What tunic of the internal eye is vascular; provides nutrients to sclera and retina?
Choroid
What tunic of the internal eye is neural?
Retina
…and suspensory ligaments support the lens and allow it to change shape for focusing light onto the retina
Ciliary Bodies
The…is the location where the optic nerve exits the eye, it is the physiological blind spot
Optic Disk
The…contains the highest density of cone cells in the retina and contains no rod cells
Fovea Centralis
Do Cones or Rods see color?
Cones
Do Cones or Rods see in dim lighting (only see black and white)?
Rods
The external ear is composed primarily of…cartilage
Elastic
The lobule is composed primarily of…
Adipose
…is often referred to simply as Fossa
Scapha
…(ear canal) extends 1.5 inches into the skull
External Acoustic Meatus
…membrane vibrates with sound waves
Tympanic Membrane
Vibrations transfer through ossicles to…in the inner ear
Cochlea
Name the three ossicles (superficial to deep):
Malleus
Incus
Stapes
As vibrations reach the cochlea, the…detects sound
Organ of Corti
The Organ of Corti converts stimuli to action potentials which are sent to the brain via the…nerve
Vestibulococblear
What two things within the inner ear are responsible for maintaining balance and equilibrium?
Semicircular Canals
Vestibule
Vestibule: …equilibrium
static
What are the pebble-like structures located in Vestibule?
Otoliths
Semicircular: …equilibrium
dynamic
What is the tongue called?
Muscular Hydrostat
What are the two main functions of the muscular hydrostat?
- assist the formulation of words during speech
- manipulate food while chewing and swallowing
…receptors are associated with taste buds which are associated with papillae
Gustatory Receptors
What are the five basic tastes?
- Sweet
- Salty
- Sour
- Biter
- Umami
What are the four zones of the tongue (proximal to distal)?
- Foliate Papillae
- Circumvalate Papillae
- Fungiform Papillae
- Filliform Papillae
Gustatory…extend into taste pore
hairs
Dissolved…bind to gustatory hairs
chemicals
When chemicals bind to gustatory hairs, it triggers…if gustatory receptor cell
depolarization
Gustation stimuli information is transmitted to the brain via what 3 cranial nerves?
VII - Facial Nerve
IX - Glassopharyngeal Nerve
X - Vagus Nerve
Olfaction has 20,000 - …smells
50,000
Olfactory receptors (bipolar neurons)
- receptor proteins on olfactory cilia (nasal lumen) that bind different…of molecules
classes
