5 Integument at Wageningen University

Flashcards and summaries for 5 Integument at the Wageningen University

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Study with flashcards and summaries for the course 5 Integument at the Wageningen University

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

The dermis arises from several sources, principally from:

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

The segmental epimeres or somites consist of:

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

What do the neural crest cells do in skin development?

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

Name the difference in skin of terrestrial animals compared to aquatic animals, why it this?

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

What happens, if mechanical friction of the integument increases ?

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

The beta-keratin layer:

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

What is a dermal scale?

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

Birds have a special gland that secretes a mixture of protein and lipids that they collect on their beaks and smear it onto their feathers, what is the name of this gland?

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

Is the sheath of a feather composed of alpha or beta keratin?

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

What is the main function of flight feathers (a type of contour feather)?

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

True or false:


most feathers receive sensory stimuli

Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

How do the neural crest cells contribute to skin pigment in mammals?

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Exemplary flashcards for 5 Integument at the Wageningen University on StudySmarter:

5 Integument

The dermis arises from several sources, principally from:

The dermatome

5 Integument

The segmental epimeres or somites consist of:

  • Dermatome, 
  • myotome 
  • sclerotome

5 Integument

What do the neural crest cells do in skin development?

The migrate into the region between the dermis and epidermis and contribute to bony armour and skin pigment cells

5 Integument

Name the difference in skin of terrestrial animals compared to aquatic animals, why it this?

Terrestrial animal skin has a lot of unordered collagen fibres (no plies). This allows for wrinkling of the skin, which is disadvantageous in water


5 Integument

What happens, if mechanical friction of the integument increases ?

The integument responds by producing a protective keratin layer

5 Integument

The beta-keratin layer:

Specialises in 

  • hard scales, 
  • claws,
  • beaks 
  • feathers

5 Integument

What is a dermal scale?

A scale made of ossified dermal bone

5 Integument

Birds have a special gland that secretes a mixture of protein and lipids that they collect on their beaks and smear it onto their feathers, what is the name of this gland?

Uropygial gland

5 Integument

Is the sheath of a feather composed of alpha or beta keratin?

Beta keratin

5 Integument

What is the main function of flight feathers (a type of contour feather)?

Their main purpose is locomotion but they also provide some insulation

5 Integument

True or false:


most feathers receive sensory stimuli

True

5 Integument

How do the neural crest cells contribute to skin pigment in mammals?

They secrete granules of the pigment melanin

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