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VMS 1004 > General structures and function of the common integument > Flashcards

General structures and function of the common integument Flashcards

1
Q

What is the common integument?

A

The outer barrier of an organism

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2
Q

What does the common integument include?

A

Subcutis, Skin and Modified skin structures

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3
Q

What two parts is the cutis split into?

A

Dermis and Epidermis

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4
Q

What is the function of the subcutis tissue?

A

Insulation, Energy Source, and protecting organs

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5
Q

What is the subcutis tissue?

A

loose connective tissue between the skin and the muscle fascia- it is in the deepest layer of the skin

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6
Q

What is the function of the dermis?

A

To determine the thickness of the skin

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7
Q

What is the Dermis made up of?

A

Fibrous, Connective tissue (collagen and elastin fibres)

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8
Q

What are Langer’s lines?

A

Lines of tension in the dermis

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9
Q

How many layers does the epidermis have?

A

4-5

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10
Q

Where is the epidermis?

A

The epidermis is the outermost layer of skin on your body

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11
Q

When is the variations in fat in subcutaneous tissue important?

A

It causes folds, and can be important when deciding where to inject dogs

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12
Q

What are 3 functions of subcutis tissue?

A

Insulation, Energy source, Padding

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13
Q

What are cutaneous muscles?

A

thin, interrupted sheets spread over the body in the subcutis

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14
Q

Where is the Platysma?

A

over the neck and face

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15
Q

Where is the Frontalis?

A

over the frontal bone

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16
Q

Where is the cutaneous coli

A

From the sternum and spreads up the neck

17
Q

Where is the cutaneous trunci?

A

covers the side of the trunk

18
Q

Where is the cutaneous omobrachialis?

A

It’s a continuation of cutaneous trunci and continues over the shoulder and arm

19
Q

Where are the preputial muscles?

A

They connect the ventral midline to prepuce

20
Q

What is the stratum basale?

A

the deepest layer, attached to the dermis causes proliferation of keratinocytes

21
Q

What is the stratum spinosum?

A

looks ‘spiky’ under microscope, contains desmosome junctions

22
Q

What is the stratum granulosum?

A

very thin layer of cells, contains products needed for keratinisation

23
Q

What is the Stratum lucidum

A

A thin, clear layer of dead skin cells

24
Q

What is the stratum corneum?

A

The outermost layer of the epidermis and marks the final stage of keratinocyte maturation and development

25
Q

What is a keratinocyte?

A

The primary type of cell found in the epidermis

26
Q

What other cells are found in the epidermis?

A

Melanocytes, Langerhans cells, Merkels cells

27
Q

What is a melanocyte?

A

Pigment cells that protect against radiation

28
Q

What is a langerhans cell?

A

immune cells

29
Q

What is a Merkels cell?

A

touch receptor

30
Q

What are some examples of Thermoregulation?

A

Sweating, Blood flow to skin, Insulation

31
Q

What are some examples of Protection?

A

Can be Physical (fat to protect organs), against radiation (e.g melanocytes) or epidermal organs (hooves, claws)

32
Q

What are some examples of immune defence?

A

Physical barrier to infection, immune cells in skin- antimicrobial properties

33
Q

What are some examples of sensing environment?

A

Using sense receptors (e.g Pressure, Pain, Heat…)

34
Q

What are some examples of storage and excretion?

A

Fat stores energy, water and vitamins- Glands can excrete water and electrolytes

35
Q

What are some examples of communication?

A

Epidermal organs (e.g horns), smelly substances from glands, pigmentation

36
Q

What are some examples of selective permeability?

A

impermeable to water, some medications can be absorbed across skin, respiration

VMS 1004 (30 decks)

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