Sensory endings associated with avian skin are easier to find than their counterparts in mammals. This is because birds have feathers instead of hairs. Feathers are larger and fewer in number than hairs. As a result, it is easier to find lamellated nerve endings by looking at the base of each feather. Also, it takes a bigger nerve bundle to provide the sensory free nerve endings to wrap around a feather follicle than a hair follicle.

Slide 89 is of the head of a chicken. If you look along the top of the head, you should be able to locate:

• stratified, squamous epithelium
• the bases (follicles) of feathers
• nerve bundles associated with the dermis and feather follicles
• lamellated sensory endings near the feather follicles

Slide 147 is of a feline pancreas. There will be one to three examples of fairly large (up to 2mm diameter) lamellated corpuscles within the parenchyma. After you have viewed lamellated corpuscles, use this slide to review compound, branched alveolar gland structure, major and minor blood vessels, and, with a little further searching, you should be able to locate one or two parasympathetic ganglia.

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