The pectinate line (anocutaneous line, dentate line, anorectal junction) is a line which divides the upper 2/3rds and lower 1/3rd of the anal canal. Developmentally, this line represents the hindgut-proctodeum junction. It is an important anatomical landmark, and several distinctions can be made based upon the location of a structure relative to this line:.
pectoral fin fold
perichordal ring
perichordal tissue +
perifoveal part of retina
perilymphatic channel +
periocular mesenchyme
peripheral region of retina
periventricular zone of hypothalamus +
pillar of the semicircular canal +
pineal foramen
piriform aperture
pit organ
placodal ectoderm
planum terminale
planum triangulare
plica semilunaris of conjunctiva
podotheca
pole of lens +
pontine tegmentum +
postbranchial lamina
posterior cleithral process
posterior dentation of dorsal fin spine 2
posterior dentation of pectoral fin spine
posterior lamina recurvata
posterior lateral line primordium +
posterior maxillary process +
posterior maxillary process dorsal process
posterior neural keel +
posterior neural rod +
posterior presumptive neural plate
posterior ramus of cleithrum
posterior segment of eyeball +
postnasal wall
postorbital process
pre-Botzinger complex
pre-chordal neural plate +
presubiculum +
primary choana
primary nerve cord +
primary olfactory fiber layer
primary vitreous
primitive superior sagittal sinus +
processus lingularis of nasal skeleton
processus posterior of parasphenoid
procurrent spur
prootic bone +
pupillary membrane
Purkinje cell layer corpus cerebelli
Purkinje cell layer valvula cerebelli
ramules cutaneous
ramus anterior of CN VIII
ramus nasalis lateralis
ramus nasalis medialis
ramus of feather barb
ramus of feather barbule
ramus posterior of CN VIII
recessus basilaris
recessus fenestrae ovalis
rectosigmoid junction
regional part of brain +
regional part of spinal cord +
Reissner's fiber +
remnant of Rathke's pouch
reticular layer of dermis
reticular membrane of spiral organ
retina +
retrochiasmatic area
rhamphotheca +
rhinarium
rhombomere boundary
ridge of tooth +
roof plate +
roof plate of diencephalon
roof plate of medulla oblongata
roof plate of metencephalon
roof plate of midbrain
roof plate of telencephalon
roof plate spinal cord region
root of nail
saccule duct
saccus dorsalis
sacral neural crest
sallet
scale primordium
segmental subdivision of hindbrain +
semicircular canal +
semicircular canal ampulla +
semicircular duct +
sensory dissociation area
septal olfactory organ +
septum pellucidum +
septum semicircularium anterior
septum semicircularium laterale
septum semircularium posterior
seydels palatal process
skeletal muscle tissue of eye +
skeletal support for eminentia olfactoria +
skin appendage follicle +
skin crease +
skin gland +
skin of body +
smooth muscle of eye +
solum nasi
spatium sacculare
spina acromioidea
spinal cord +
spinal cord neural keel
spinal cord neural rod
spinal cord neural tube
spiral ligament
spiral modiolar artery
spiral organ of cochlea +
spiral prominence of cochlear duct
statoconial membrane +
strand of hair +
stratum basale of epidermis +
stratum compactum of dermis +
stratum corneum of epidermis +
stratum fibrosum et griseum superficiale
stratum granulosum of epidermis
stratum intermedium of epidermis
stratum intermedium of tooth
stratum lucidum of epidermis
stratum marginale
stratum opticum
stratum periventriculare
stratum spinosum of epidermis
stria vascularis of cochlear duct +
stylar shelf +
subcupular meshwork of statoconial membrane
subdivision of conjunctiva +
subdivision of spinal cord central canal +
submucosa of anal canal
subolfactory process
subotic alae
substantia nigra pars compacta
substantia nigra pars reticulata
substratum of layer of retina +
supcapsular region of anterior region of lens
supcapsular region of posterior region of lens
superior branch of oculomotor nerve
superior parietal cortex
supraorbital flange
supraorbital foramen +
suspensory ligament of breast
suspensory ligament of lens
tapetum lucidum of camera-type eye +
tectorial membrane of cochlea +
tectorial restraint system
tectum nasi
tela choroidea of fourth ventricle
tela choroidea of midbrain cerebral aqueduct
tela choroidea of telencephalic ventricle
tela choroidea of third ventricle
telencephalic part of interventricular foramen
telencephalon diencephalon boundary
tentorium cerebelli
terminal part of the cochlear canal
tooth crown +
tooth enamel organ +
tooth root +
transverse nasal root vein
triangular part of inferior frontal gyrus
trunk neural crest +
trunk taste bud
tunica fibrosa of eyeball +
type 1 odontode
unencapsulated tactile receptor
upper eyelid protuberances
urohyal lateral process
urohyal median process
urophysis
utricle duct
utricle valve
utriculosaccular duct +
uvea +
vacuolated notochordal tissue
vagal neural crest +
vallecula of cerebellum
venous dural sinus +
venous system of brain
ventral limb of posttemporal
ventral part of optic cup +
ventricular system of brain +
ventricular system of central nervous system +
Verson's gland
vestibular aqueduct
vestibular fissure of the cochlear canal
vestibular labyrinth +
vestibular membrane of cochlear duct
vestibular nerve
vestibulocochlear nerve +
vitreous body +
vomeronasal nerve
vomeronasal organ +
wall of anal canal
wall of central canal of spinal cord
wall of eyeball
wall of lacrimal duct
wall of membranous labyrinth
wall of ventricular system of brain +
zona limitans intrathalamica
zone of basilar membrane of cochlea +
zone of skin +
zygomatic process of frontal bone
Synonyms
Exact Synonyms:
linea pectinata canalis analis
;
pectinate line of anal canal
Related Synonyms:
Hilton's 'white line'
;
dentate line
;
linea anocutanea
;
recto-anal junction
;
site of anal membrane