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BIOM*2000 > Skin and Body Membranes > Flashcards

Skin and Body Membranes Flashcards

1
Q

What are the two major groups of body membranes?

A
  • Epithelial membranes
  • Connective tissue membranes
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2
Q

What are epithelial membranes composed of?

A

Epithelial tissue with an underlying of connective tissue

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3
Q

What does it mean for epithelial tissues to be avascular?

A

It doesn’t have its own blood supply

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4
Q

What type of epithelial membrane makes up the skin?

A

The cutaneous membrane

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5
Q

What two layers compose the cutaneous membrane?

A
  • The epidermis
  • The dermis
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6
Q

What is the subcutaneous tissue?

A

The adipose (fat) tissue beneath the skin

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7
Q

Is subcutaneous tissue considered part of the skin?

A

No

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8
Q

What anchors the skin to underlying organs, provides a site for nutrient storage, serves as a shock absorber, and insulated the deeper tissue?

A

Subcutaneous tissue

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9
Q

What are most cells of the epidermis?

A

Keratinocytes

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10
Q

How are keratinocytes connected throughout the epidermis?

A

Desmosomes

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11
Q

What are the five layers/strata that compose the epidermis?

A
  • The stratum basale
  • The stratum spinosum
  • The stratum granulosum
  • The stratum lucidum
  • The strtum corneum
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12
Q

Which layer of the epidermis lies closest to the dermis?

A

The stratum basale

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13
Q

Which layer of the epidermis contains the most adequately nourished cells?

A

The stratum basale

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14
Q

In which layer of the epidermis are melanocytes chiefly located?

A

The stratum basale

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15
Q

Which layer of the epidermis contains cells that secrete glycolipid that resist water

A

The stratum lucidum

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16
Q

At which layer of the epidermis do cells begin to die because they are unable to get adequate nutrients and oxygen?

A

The stratum lucidum

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17
Q

What is the most superficial epidermal layer?

A

The stratum corneum

18
Q

Where are merkel cells found?

A

At the epidermal-dermal junction

19
Q

What are the two major regions of connective tissue making up the dermis?

A
  • The papillary layer
  • The reticular layer
20
Q

Which layer of the dermis contains dermal papillae?

A

The papillary layer

21
Q

What are dermal papillae?

A

Projections of dermal tissue into the epidermis

22
Q

What are two examples of the different functions of dermal papillae?

A
  • Some contain capillary loops and provide nutrients to the epidermis
  • Some house pain and touch receptors
23
Q

What is the deepest layer of the dermis?

A

The reticular layer

24
Q

Which layer of the dermis contains connective tissue, hair follicles, sweat and oil glands, blood vessels, and lamellar corpuscles?

A

The reticular layer

25
Q

What is the role of phagocytes found in the dermis?

A

Prevent microbes that managed to get through the epidermis from penetrating deeper into the body

26
Q

What types of fibres does the dermis contain?

A
  • Collagen fibres
  • Elastic fibres
27
Q

T or F: The dermis is avascular.

A

False. It is supplied with blood vessels that help maintain body temperature homeostasis.

28
Q

What are mucous membranes/mucosa composed of?

A

Epithelium resting on a loose connective tissue membrane

29
Q

Which type of epithelial membrane lines all body cavities open to the exterior?

A

The mucous membranes/mucosa

30
Q

What is the epithelium of mucosa often adapted for?

A

Absorption or secretion

31
Q

What are serous membranes/serosa composed of?

A

A layer of simple squamous epithelium resting on a thin layer of areolar connective tissue

32
Q

Which type of epithelial membrane line compartments in the ventral body cavity that are closed to the exterior?

A

The serous membrane/serosa

33
Q

What are the two layers of serous membranes?

A
  • The parietal layer
  • The visceral layer
34
Q

What does serous fluid allow organs to do?

A

Allows organs to slide easily across cavity walls and each other without friction or pain

35
Q

T or F: The specific names of the serous membranes depend on their locations.

A

True

36
Q

What is the peritoneum?

A

The serosa lining the abdominal cavity and covering its organs

37
Q

What are the pleurae?

A

The serosa lining the lungs and thoracic cavity

38
Q

What is the pericardium?

A

The serosa enveloping the heart

39
Q

What are synovial membranes?

A

The membranes that line the fibrous capsules surrounding joints

40
Q

What is the integumentary system composed of?

A

The skin and its appendages (sweat and oil glands, hair, and nails)

41
Q

What is the main function of the integumentary system?

A

To protect the body and its deeper organs

BIOM*2000 (16 decks)

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