BIO 342
Comparative Vertebrate Anatomy
Lecture Notes 4 - Skeletal System III


VISCERAL SKELETON (or SPLANCHNOCRANIUM)

Fish visceral skeleton - consists of 7 sets of paired cartilages in the 7 visceral arches & a series of mid-ventral cartilages (basihyal & basibranchials) in the pharyngeal floor






Bony fishes

    Feeding movements in many bony fishes -> cranial kinesis (see Figure 9.23, p.351 of text)

    Cranial kinesis:

See also: Shark Jaw Movement


Cyclostomes


Jaw suspension of fishes

Source: http://www.uta.edu/biology/restricted/3452hske.htm



TETRAPODS - With life on land (& pulmonary respiration), the visceral skeleton underwent substantial modification. Some structures were lost & others remained to perform new functions.


Source: http://www-users.york.ac.uk/~wjh101/hedbone/Turtle/turtle.htm

Source: http://home.houston.rr.com/vnotes/Bones/Meckel.html

Source: http://www.liberty.edu/academics/registrar/courses00/biol418pa.htm

Hyoid apparatus of tetrapods



Lower jaw



Skeletal System I

Skeletal System II

Skeletal System IV


Related Links:

Head Skeleton


Back to BIO 342 Syllabus