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Foregut
Midgut
Hindgut

Anal membrane	गुदा झिल्ली
Anterior intestinal portal	अग्र आंत द्वार
Branchial cleft
Bucconasal membrane	गंडनासिका झिल्ली
Buccopharyngeal membrane	गंडग्रसनी झिल्ली
Caecal saccules	अंधनाल थैलिका
Caecul bud	अंधनाल कलिका
Cloacal membrane	अवस्कर झिल्ली
Cystic bud	पित्ताशय कलिका
Dorsal mesogastrium	पृष्ठ आंत्रयोजिनी
Foregut	अग्रआंत्र
Hepatic bud	यकृत कलिका
Hepatic sinusoids	याकृत गह्विका
Hindgut	पश्चान्त्र
Jejunoileal coils
Midgut	मध्यान्त्र
Pharyngeal arches	ग्रसनी
Pharyngeal cleft	ग्रसनी विदर
Pharyngeal pouches	ग्रसनी
Postarterial midgut	अधि धमनी मध्यांत्र
Posterior intestinal portal	पश्च आंत्र द्वार
Prearterial midgut	अधः धमनी मध्यांत्र
Labio gingival sulcus
Lingual swelling	जिह्व उभार
Ventral mesogastrium	उदरीय आंत्रयोजिनी
Vitellointestinal duct	पीतकान्त्र वाहिका
Tracheobronchial diverticulum	विपुटी
Tracheoesophageal septum	श्वासनाल -ग्रासनली पट्ट
Thyroglossal duct	अवटुजिह्व वाहिका
Respiratory primordia	आद्य श्वसनिका
Proctodaeum - ectodermal anal pit
Primitive gut	आद्य आशय
Primitive anorectal canal	आद्य गुदामलाशय नली
Primitive rectum	आद्य मलाशय
Pancreatic buds	अग्न्याशय कालिका

Primitive tubular gut
- buccopharyngeal membrane ( cephalic end )
  - primitive mouth cavity or stomodaeum
- Foregut
  - cephalic or pharyngeal part of foregut
    - funnel shaped expansion compressed dorsoventrally
      - dorsal wall or roof
        
        notochord
        
        hindbrain
        
        pair of dorsal aorta
      - ventral wall or floor
        
        ectodermal stomodaeum
        
        forward bulging of pericardial sac
        
        developing heart
        
        septum transversum
      - two lateral walls
        
        separated from overlying surface ectoderm by
        
        splanchnic mesoderm
        
        undergoes segmentation
        
        mesodermal bars / branchial or visceral arches
      - Each arch contains
        
        surface ectoderm
        
        core of mesoderm
        
        inner lining of pharyngeal endoderm
        
        extends ventrally and medially
        
        along floor or ventral wall of pharynx
        
        meets the corresponding arch of opposite side
      - Between each arch
        
        closely approximated membranes
        
        in fishes they rupture
        
        in terrestrial
        
        series of ectodermal grooves called branchial or visceral cleft / ectodermal cleft
        
        same on inner side endodermal pouches / pharyngeal pouches are formed
      - FIRST ARCH ( श - स - ष ) ectoderm - mesoderm - endoderm
        
        श -
        
        forms skin over the
        
        upper jaw , lower jaw and tragus of auricle
        
        स -
        
        Artery - first aortic arch which disappears
        
        Nerve -
        
        pre trematic accompanies caudal border or preceeding arch
        
        Chorda Tympani nerve
        
        post trematic follows cephalic border of succeeding arch
        
        Mandibular nerve
        
        Muscle
        
        Tensor tympani , tensor veli palatini
        
        Muscles of Mastication , Mylohyoid
        
        Anterior belly of digastric
        
        Skeletal -
        
        central axis of mesodermal core is chondrified
        
        cartilaginous bar is enveloped by perichondrium
        
        dorsal maxillary process
        
        Ventral Mandibular process ( called as meckel's cartilage )
        
        dorsal part ossified to form
        
        malleus and incus
        
        ascending part regresses
        
        fibrous part persists as
        
        anterior ligament of malleus
        
        sphenomandibular ligament
        
        fibrous part is ossified to form
        
        body of mandible
        
        from mandibular foramen to mental foramen
      - SECOND ARCH
        
        S -
        
        Muscle -
        
        Stapedius , stylohyoid ,
        
        Platysma , posterior belly of digastric
        
        Auricular , epicranius
        
        Skeletal -
        
        Cartilaginous bar is called as reichert's cartilage
        
        dorsal part of cartilage ossified to form
        
        stapes
        
        succeeding part forms
        
        styloid process of temporal bone , stylohyoid ligament
        
        Ventral part is converted
        
        lesser cornu
        
        upper part of body of hyoid bone
      - THIRD ARCH
        
        S
        
        muscle
        
        stylopharyngeus
        
        skeletal -
        
        cartilaginous bar
        
        dorsal part dissapears
        
        ventral part is ossified
        
        greater cornu of hyoid bone and lower part of hyoid bone
      - FOURTH ARCH
        
        S
        
        muscle
        
        cricothyroid
        
        Skeletal
        
        cartilaginous bar
        
        dorsal part dissapears
        
        Ventral part forms lamina of thyroid cartilage
      - FIFTH ARCH
        
        DISSAPEARS
      - SIXTH ARCH
      - S
        
        muscle
        
        all intrinsic muscles except cricothyroid
        
        Skeletal
        
        Cartilaginous bar
        
        Dorsal part dissappears
        
        Ventral part forms cricoid and arytenoid cartilage
- Anterior intestinal portal
  - termination of bile duct in second part of duodenum
- Midgut
- posterior intestinal portal
- Hindgut
- cloacal membrane (caudal end)

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Gastrointestinal tract

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