You are now at the first layer of the dissection. At this point you will be able to see the entire liver and heart.
*As we noted previously, a pithed frog has had its central nervous system destroyed (its spinal cord has been severed). It is technically dead, but some of its organs continue to function for a brief period. Examination of recently pithed frogs used to be more common in biology classrooms than it is today. At present, preserved frogs are more widely used.
(2.6MB) Overview of Layer One
(600k) Beating Heart in a pithed frog
(Note that there is no sound in the this movie.)
© 1994 Mable Kinzie. All rights reserved.