Jaw Suspensorium

Jam Suspensorium. 7 Ventebrate skull has 3 majore facts → NeuroCranium + Dermato Cradium Splanchnacranium. → The splanchnocranium Consists of visceral arches. of + The first/Mandibular arch Consist of a densal palato forgo Quadrate har forming the upperjam." → The Ventral Meckel's Cantilage forms the Cover jaw. → The 2nd (Hyoid arch) consist of densal byomandibular which Supports the jars with the Creavium. + The Method of attachment of four into the Choredrescrtanium is termed as jour surfensorium. + There are 5 principal varciants ore types of seusfensoria Hutsdia stylic + Condition Sound in some earlier grathostomes. > Taws are attached to the Craricem ley anterion and fasterion ligaments. + Hyoid corch remains Free of doesn't support the fams. + The gill cleft in front of hyoid arch leans a complete gill of doen't form any aspiracle. Chondro Cranium. onkil Anterion ligamenh -Hyomandibular -Postenion ligament. Gill cleft Hypaid anch Amphistylic + Primitive arrangement found in crosseplaygriend some primitive Shanks. otic process of → The Quadrate fof upperfour are connected/attached by Ugaments to chordeaclanium → Ufferent of hyomandibula Chyoid anch) is also attached the I juus are suspended from to the Chondruocarium, while the d ifs other end. + This arrangement make double suspension, since both the fins! & and arches ponticipate in bracing the joueur against the Chandra Manium. Chondracranium. Qic fpriocess Orebit Palahequadrate. Hyemandilala Meckel's Canklage Amphistylic Hjostylic + It's found in most clasmolivcanchs and all lony fishes. + Upper jour is loosely attached by anterior ethmapalatine to Cranium. Cranium. y Both the j'ams are leaved against byormandilurlar, the uffer end of which fits inde auditory region of sskull. + Since only hyoid arch. C linds the a faues against cranium, this Jae-Suspension is kormed hypstyle +Dt fronides the jaws a wider monement and helps in Swallowing langere preys Spinacular ligament Orbit Hyomardiluulan. Creencum. -Palado quadres Cercetonyal basihyol Autostylic This condition is found in extinct placodenms, Chimeras & + Jetrapods. & lungfish. → Hyomandibular does not participate but becomes modified into columella / stafes for transmitting sound waves. + Uppere jour is directly bound to cranium by dermal bones. → The articular of lower jam articulaks with the quadrate of the upper fam. Cranion. Orket Gladent Cotic process) 이 Palatsquadrete. Hyoid anch