Chapter 6 Part 2: integument

Question 1

Unicellular glands in amphibians

Question 2

Multicellular glands in amphibians

Question 3

How does the amphibian stratum corneum differ from the stratum corneum found in amniotes?

Question 4

How do reptile scales differ from scutes?

Question 5

What are scales and scutes made of?

Question 6

Be able to describe how ecdysis happens

Question 7

What are the 2 main parts of a turtle’s shell?

Question 8

What are osteoderms?

Question 9

Where are birds most likely to have reptile-like scales?

Question 10

Understand basic steps of feather development

Answer 10

o Starts with condensation of cells in dermis
o Thickens feather placode
o Piece grows up verticallt to become feather germ
 Sinks down into dermis to form pit
o Blood vessel will come in to attach to pit
o Blood vessel causes dermis to degenerate, hollow term of ectoderm
o Ectoderm becomes sheath, will eventually form barbs and rachis

Question 11

Which layer (dermis or epidermis) forms the actual feather?

Question 12

What kinds of feathers are found a) on the wings and tail, b) covering the body?

Question 13

What are pterylae?

Question 14

What are the skeletal components of the bill(or beak)?

Question 15

What is the covering(?)???

Question 16

What are the 3 layers of mammal hair?

Question 17

Understand the major kinds of skin glands found in mammals (sebaceous, sweat, apocrine, mammary)

Question 18

Be able to describe the structure of a) hooves, b) claws, c) nails

Question 19

Be able to describe the similarities/differences between a) horns, b) antlers, c) pronghorn horns, d) giraffe ossicones.

Question 20

What is baleen?