Explain the Anatomy of Pharyngeal Slit Flashcards

Can you explain the anatomy of pharyngeal? These flashcards can help. Pharyngeal slits are filter-feeding organs observed in non-vertebrate chordates living in aquatic environments. The primary purpose of the pharyngeal slits is to breathe. They are openings that permit breathing underwater by using the throat. Pharyngeal slits are repeated opportunities that rest upon the pharynx caudal to the mouth. Read and study these flashcards and impress yourself and others with your knowledge.

65 cards   |   Total Attempts: 188
  

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Cards In This Set

Front Back
Which of the following is an example of a urochordate? Acorn worms Flatworms Echinoderms Tunicates
Tunicates
To which of the following groups does amphioxus belong? Hemichordates Urochordates Cephalochordates Echinoderms
Cephalochordates
The coelom in vertebrates originally forms within which of the following layers? Ectoderm Mesoderm Endoderm Epiderm
Mesoderm
In a chordate, the location of the notochord is in which of the following positions? Ventral to the nerve cord and dorsal to the coelom Dorsal to the nerve cord and ventral to the liver Ventral to the pharynx Dorsal to the pharynx and ventral to the gut
Ventral to the nerve cord and dorsal to the coelom
In all chordates, the structures immediately lateral to the notocrd are: Muscles Kidneys Fins Liver and pancreas
Muscles
Of the following coelomates, which is a protostome? Hemichordates Tunicate Urochordate Arthropod 2 of the above
Arthropod deuterostomes- echinoderms and chordates
As adults, tunicates lose some of their defining chordate characteristics. Which of the following remain in adult tunicates? Branchial arches Notochord Dorsal nerve cord Eyespot 2 of the above
Branchial arches (gills)
Adult lamprey are: Anadromous Paedomorphic Polyphydonts Protostomes
Anadromous- live in the ocean
Deuterostomes can have: Spiral cleavage of the embryonic cell mass Invagination of the mouth cavity before any other cavity Members of their group who are mollusks A notochord
A notocord
The notochord forms within which of the following germ layers? Ectoderm Mesoderm Endoderm CT dermal layer
Mesoderm
The first function of a notochord was probably to” Provide rigidity for locomotion Enable the organism to send electrical impulses to the lower part of its body Provide a means to filter feed Allow the organism to attach to the substrate
Provide rigidity for locomotion
In the most primitive chordates, the gills are used for: Respiration Reproduction Excretion Feeding
Feeding
A good example of an agnathan would be: Shark Starfish Turtle Amniote
Turtle
The sinus venosus in amphioxus represents the early development of which of the following: Heart Liver Brain Nose
Heart
The structures within which sperm first develop are: Epididymus Fallopian tubes Seminal vesicles Vas deferens
Seminal vesicles