Large lobes of the brain associated with the eyes. In octopods and some squids the optic lobes may be separated from the rest of the brain by an optic stalk of varying length. In Octopus the optic lobes contain 92 million cells compared with only 42 million in the main central mass of the brain (J. Young, 1963) .
cerebellar crest
cerebral hemisphere +
cerebral subcortex +
chamber of eyeball +
chitin-based cuticle +
chorioretinal region +
choroid plexus stroma +
ciliary body +
ciliary marginal zone
ciliary processes
ciliary stroma
circuit part of central nervous system +
cleithrum head
climbing fiber
cochlea +
cochlear basement membrane
cochlear canal +
cochlear duct of membranous labyrinth +
cochlear labyrinth +
cochlear modiolus +
cochlear nerve
collagenous dermal stroma
columella nasi
common crus of semicircular duct
composite part spanning multiple base regional parts of brain +
conjunctiva +
conjunctival papilla
conjunctival sac +
corneo-scleral junction
corpora quadrigemina +
cortex of hair
courtship gland
cranial neural crest +
crista ampullaris +
crista intermedia
crista subnasalis
crista supraorbitalis
crus commune +
ctenius
cultriform process
cusp of tooth +
cutaneous elastic tissue +
cutaneous microfibril
cuticle of hair
dartos muscle of labia majora
dentate gyrus subgranular zone
dermal condensation of feather follicle +
dermal papilla +
dermal pulp of feather shaft
dermal scale focus
dermal skeletal element +
dermal superficial region
dermis +
dermis of feather follicle
diaphragma sellae
diencephalic part of interventricular foramen
distal limb integumentary appendage +
dorsal iris
dorsal part of optic cup
dorsal zone of medial entorhinal cortex
dorso-rostral cluster
dorsolateral septum
dorsum of nose
duct of apocrine sweat gland
duct of eccrine sweat gland
duct of olfactory gland
duct of sebaceous gland +
ductus reuniens +
dura mater lymph vessel
ecto-epithelium +
ectodermal part of digestive tract +
Eimer's organ
elastica externa of notochord
enamel knot
endolymphatic duct +
endolymphatic system
entorhinal cortex +
epibranchial ganglion +
epidermal egg tooth
epidermal intermediate stratum
epidermal placode
epidermal ridge of digit
epidermal scale +
epidermal superficial stratum
epidermal-dermal junction +
epidermis of feather follicle +
epidermis suprabasal layer
epioccipital bridge
epioccipital posterior process
epiotic +
epiphysial cluster
external acoustic meatus +
external acoustic meatus osseus part
external cellular layer
external naris +
external nose +
extremitas anterior
eye muscle +
eye trabecular meshwork +
eyeball of camera-type eye +
eyelid +
eyelid blood vessel
eyelid gland +
falx cerebelli
falx cerebri
fasciculus of brain +
fasciola cinerea
fasciolar gyrus
feather +
feather barb +
feather barbicel
feather barbule +
feather bud, dermal component +
feather calamus
feather shaft +
feather vane
filum terminale +
filum terminale externum
filum terminale internum
fin fold pectoral fin bud +
fin hook +
flexural organ
floor plate +
floor plate of neural tube +
foramen cecum of frontal bone
forebrain midbrain boundary neural keel +
forebrain midbrain boundary neural plate +
forebrain midbrain boundary neural rod +
forebrain midbrain boundary neural tube
forebrain neural keel +
forebrain neural rod +
forebrain neural tube
forebrain-midbrain boundary
foregut duodenum mesentery
fourth ventricle aperture +
fovea centralis +
foveola of retina
frontal nerve (branch of ophthalmic)
future hindbrain meninx +
ganglion of central nervous system +
gelatinous layer of statoconial membrane
gigantocellular part of magnocellular preoptic nucleus