List of subjects in Gray's Anatomy: I. Embryology

the animal cell ()

• Embryology
• ontogeny
• phylogeny
• ovum
• spermatozoön
• segmentation
• differentiation
• somatic cells
• germinal cells
• Animal cell
• fertilized ovum
• cytoplasm
• nucleus
• nucleolus
• Cytoplasm (protoplasm)

• mitochondria
• paraplasm
• spongioplasm
• hyaloplasm
• cell membrane
• Nucleus
• nuclear membrane
• nuclear substance (nuclear matrix)
• karyoplasm
• karyomitome
• linin
• chromatin (basichromatin)

• nucleoli
• pseudo-nucleoli
• true nucleoli
• centrosome
• centriole
• centrosphere
• attraction sphere
• direct division
• Indirect division or karyokinesis (karyomitosis)
• resting stage
• Prophase
• chromosomes
• achromatic spindle
• mother star or monaster
• Metaphase
• daughter chromosomes
• Anaphase
• diaster
• Skein, or spirem

• Telophase

the ovum ()

• oögonia
• ova or primary oöcytes

• yolk or oöplasm
• germinal vesicle
• germinal spot
• zona striata or zona pellucida
• corona radiata
• Yolk
• cytoplasm
• formative yolk
• nutritive yolk or deutoplasm

• centrosome
• centriole
• Germinal vesicle
• zona striata or zona pellucida
• corona radiata
• polar bodies or polocytes
• mature ovum

• secondary oöcyte
• first polar body
• mature ovum
• second polar body

• female pronucleus

the spermatozoön ()

• spermatozoa or male germ cells
• head
• head-cap
• perforator

• neck
• anterior centriole
• connecting piece or body
• terminal disk
• axial filament
• spiral thread
• mitochondria sheath
• tail
• end-piece
• spermatogonia
• primary spermatocytes
• secondary spermatocytes
• spermatids

fertilization of the ovum ()

• tubal pregnancy
• abdominal pregnancy
• ovarian pregnancy

• cone of attraction
• vitelline membrane
• male pronucleus
• segmentation nucleus

segmentation of the fertilized ovum ()

• holoblastic
• meroblastic

• morula
• trophoblast
• inner cell-mass
• blastodermic vesicle
• embryonic pole

• syncytium or syncytiotrophoblast
• cytotrophoblast or layer of Langhans
• amniotic cavity
• embryonic disk
• embryonic ectoderm

Primitive streak

• primitive streak
• Hensen's knot
• primitive groove
• blastophore
• buccopharyngeal membrane
• pericardial area
• proamniotic area
• proamnion
• cloacal membrane

Ectoderm

• Ectoderm

Entoderm

• Entoderm

Mesoderm

• Mesoderm

• paraxial mesoderm
• lateral mesoderm
• intermediate cell-mass
• lateral mesoderm
• somatic layer
• somatopleure
• splanchnic layer
• splanchnopleure
• celom

the neural groove and tube ()

• neural folds
• neural groove
• neural tube or neural canal
• neurenteric canal

• sinus rhomboidalis
• neural crest or ganglion ridge
• fore-brain (prosencephalon)
• mid-brain (mesencephalon)
• hind-brain (rhombencephalon)

• medulla spinalis or spinal cord

the notochord ()

• chordal furrow
• notochord

the primitive segments ()

• primitive segments
• myocœl
• intermediate cell-mass

separation of the embryo ()

• Cephalic fold of embryo
• Caudal fold of embryo
• fore-gut
• body-stalk
• hind-gut

• umbilical vesicle
• vitelline duct

the yolk-sac ()

• vitelline fluid
• vitelline circulation
• vitelline duct
• Meckel's diverticulum

development of the fetal membranes and placenta ()

• Allantois

• Allantois
• body-stalk

• Amnion
• amniotic ectoderm
• amniotic fold
• amniotic cavity
• amnion
• false amnion or serosa

• Umbilical cord and Body-stalk

• Umbilical cord and Body-stalk
• jelly of Wharton

• Implantation or Imbedding of the Ovum
• intervillous space

• Decidua
• decidual cells
• stratum compactum

• Decidua
• stratum spongiosum
• unaltered or boundary layer
• decidua capsularis
• decidua basalis or decidua placentalis
• decidua vera or decidua parietalis

• Chorion
• cytotrophoblast or layer of Langhans
• syncytiotrophoblast
• chorionic villi

• Chorion
• chorion læve

• Chorion
• chorion frondosum

• Placenta
• Fetal portion

• Maternal portion
• basal plate
• cotyledons

• Separation of the Placenta
• after-birth
• cotyledons

• Separation of the Placenta
• velamentous insertion

the branchial region ()

• Branchial arches or Visceral arches and Pharyngeal pouches
• branchial or outer pharyngeal grooves
• closing membranes

• Branchial arches or Visceral arches and Pharyngeal pouches
• gill-clefts
• branchial arches or visceral arches
• mandibular arch (first branchial arch)
• Meckel's cartilages
• maxillary process
• second branchial arch or hyoid arch

• mandibular arch (first branchial arch)
• third branchial arch
• fourth branchial arch
• fifth branchial arch
• sixth branchial arch
• sinus cervicalis
• sinus tonsillaris
• Nose and Face
• olfactory areas
• fronto-nasal process

• Nose and Face
• olfactory pits
• medial nasal process
• lateral nasal process
• globular processes of His
• nasal laminae

• Nose and Face
• columella
• maxillary process
• naso-optic furrow

• maxillary process
• primitive palate
• bucco-nasal membrane
• primitive choanae
• palatine processes
• permanent choanae

• maxillary process
• vomero-nasal organs of Jacobson
• Limbs

development of the body cavities ()

• septum transversum

the form of the embryo at different stages of its growth ()

• Embryo, form of, at different stages:

See also

• List of images and subjects in Gray's Anatomy
• List of images in Gray's Anatomy: I. Embryology
• Gray's Anatomy