'Pharyngeal pouches' presentation slideshows

The development of the head and neck

647 views • 55 slides

Chordates

451 views • 43 slides

The Evidence for Evolution

499 views • 41 slides

Invertebrates and Vertebrates

513 views • 29 slides

15.21 The concept of stem cells

425 views • 22 slides

Chordates

Chordates. Biology 112. Characteristics of Phylum Chordata. A chordate is an animal with the following four features: A hollow nerve cord that runs along the back of the body A notochord is a support rod that runs just below the nerve cord

483 views • 19 slides

Development of pharyn geal apparatus : pharyngeal arches and its derivatives

Development of pharyn geal apparatus : pharyngeal arches and its derivatives. Dr. N a ndor Nagy. Semmelweis University. Pharyngeal (or branchial) arches form in craniocaudal sequence during 4th to 5th weeks. Structures in embryonic pharyngeal arches reorganize

208 views • 18 slides

Chordates

Chordates. What is a Chordate?. Hollow nerve cord Notochord: long supporting rod below nerve cord Pharyngeal pouches: gills Tail. Notochord. Muscle segments. Hollow nerve cord. Anus. Tail. Mouth. Pharyngeal pouches. Nonvertebrate Chordates. Tunicates Filter-feeders

138 views • 10 slides

Chordates

Chordates. Phylum Chordata. Four distinctive characteristics define the chordates: Notocord Dorsal tubular nerve cord Pharyngeal pouches (gill slits) Postanal (past the anus) tail !! All are found at least at some embryonic stage in all chordates, although they may later be lost. Notochord.

94 views • 8 slides