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Comparative Anatomy > Chapter 6 > Flashcards

Chapter 6 Flashcards

1
Q

Avascular
Interface between organism and environment
Non-living coverings
1. Mucus
2. Stratum corneum
Derived from ectoderm

A

Epidermis

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2
Q

Secret mucus

A

Goblet cells

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3
Q

Fish epidermal glands

A

Goblet cells, granular cells, few multicellular glands, photo phones in deep sea telesots

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4
Q

Aquatic amphibians epidermis

A

Multicellular mucus or granular glands, moistens skin in air, assist function of epidermis as respiratory membrane

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5
Q

Merocrine

A

Secrete via cell membrane, cells remain intact human sweat glands

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6
Q

Holocrine

A

Cells are the secretion

Avian oil glands and mammalian sebaceous glands

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7
Q

Apocrine

A

Material in apical region plus some cytoplasm pinches off

Mammary glands

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8
Q

Goblet cells

A

Mucus oozes from ruptured cell apex

Several rounds of repair then is discarded

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9
Q

Present in amphibians and reptiles not in birds and mammals

Toxic alkaloids
Phermones

A

Granular

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10
Q

Uropygeal gland
Water repellent product

A

Avian oil glands

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11
Q

Alveolar
Secrete oily sebum into hair follicles

A

Sebaceous

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12
Q

Coiled tubular sweat glands in mammals

Invaginate deep into dermis

A

Sudiferous

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13
Q

Sebaceous and sudiferous glands -> phermones

A

Scent glands

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14
Q

Modified sebaceous
Develop from ectodermal milk lines
Spread beneath dermis

A

Mammary gland

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15
Q

Site of keratinization protect against dessication
Improved thermoregulation
Defense

A

Stratum corneum

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16
Q

Repitious thickening of stratum corneum

Squamates= overlapping folds
Present in birds where feathers are missing

A

Epidermal scales

17
Q

First appeared in reptiles
Persisted in birds and mammals
Unguis and subunguis

A

Claws hoofs and nails

18
Q

Cover most of body but follicles are disposed in feather tracks

A

Contour feathers

19
Q

Small, fluffy
Underneath and between contour

A

Down feathers

20
Q

Hairlike
Scattered among contour

A

Filoplumes

21
Q

Basic component is collagenous connective tissue

Mesoderm derived

A

Dermis

Comparative Anatomy (6 decks)

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