Unit 7 Flashcards
Blind Spot of Eye
optic disc
Aqueous humor
Liquid filling anterior cavity of eye
Vitreous Humor
Liquid filling posterior cavity of eye
The muscles that changes the shape of the lense
ciliary body
What nervous system decreases the size of pupil?
Which one increases?
decreases: parasympathetic
increases: sympathetic
olfactory epithelium
a thin, cellular tissue that runs along the roof of the nasal cavity.
Cranial nerve involved with smelling
olfactory nerve (cranial nerve 1)
sensory receptive cells for smell and taste
chemoreceptors
Can olfactory receptor cells be regenerated?
yes, in 30-60 days
Where is the primary olfactory cortex?
Temporal lobe
Where is the gustatory cortex?
Insula
Crainal nerves for taste?
VII: facial, IX: glossopharyngeal, X: vagus
What structures of the eye ensure that the proper amount of light is projected to
the retina?
iris controls how much light enters, lens focus light onto retina
Under what conditions would you use rods for vision instead of cones? When do
you use cones?
rods are used for low light, cones are for high light and color
conjunctiva
lines surface or eye and eyelid
Under what conditions would you use rods for vision instead of cones? When do
you use cones?
What structures of the eye ensure that the proper amount of light is projected to
the retina?
iris controls how much light enters, lens focus light onto reti
Olfactory nerve I
Smell
Optic Nerve II
vision
Oculomotor Nerve III
eye movement
Trochlear Nerve IV
eye movement
Trigeminal Nerve V
sensations of face, mastification
Abducens Nerve VI
eye movement
Facial Nerve VII
expression, taste, production of saliva
Vestibulocochlear Nerve VIII
hearing, balance
Glossopharyngeal Nerve IX
taste, saliva, oral cavity
Vagus Nerve X
homeostatic control of organs, thoracic & upper abdonminal
Spinal Accessory XI
muscles of the neck, cervical spinal nerves
Hypoglossal XII
lower throat & tounge
Fibrous Tunic
Sclera & cornea
Vascular Tunic
iris, ciliary body, choroid, pupil, suspensory ligaments
Sensory/Neural tunic (retina)
macula lutea, fovea centralis, optic disc,
optic nerve, ganglion cells, bipolar cells, photoreceptors
What cell types are found in the retina?
Ganglion cells, bipolar cells, and photoreceptors (cones and rods)
Where is the concentration of rods the highest in the retina
Peripheral
Where is the concentration of cones the highest in the retina
center
What structure of the retina contains only cones?
Fovea centralis
