Portals of entry and exit and the body's defenses Flashcards

1
Q

6 portals of entry and exit

A

Respiratory, gastrointestinal, genitourinary, open lesions, percutaneous, conjunctiva

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2
Q

Nasal passages

A

Warming, humidifying and clearing of large particles

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3
Q

Windpipe and bronchi

A

Cilia carry mucous with contaminates up to esophagus

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4
Q

Bronchial tubes

A

Constrict on irritation and produce cough or sneeze which is another clearance mechanism

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5
Q

Alveoli

A

Particles smaller than 0.5 microns are likely to reach the alveoli

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6
Q

Parts of gastrointestinal

A

Saliva, stomach, intestine, normal flora

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7
Q

Saliva

A

Mildly bactericidal

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8
Q

Stomach

A

Low pH destroys most organisms

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9
Q

Intestine

A

Mucous movement collects material which is removed in the feces

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10
Q

Normal flora

A

Represent competition for invading pathogens

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11
Q

Secretion of toxic substances

A

Excreted in sweat or feces

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12
Q

Genitourinary secretions

A

Are bactericidal, these organs are remarkably free from bacteria; kidney detoxifies and excretes toxic substances

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13
Q

In open lesions, inflammatory reaction occurs causing

A

Stimulating celular response: leuc ocotes

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14
Q

Immunity

A

Resistance associated with possession of antibodies having specific action on an infectious organism

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15
Q

Types of immunity

A
Passive immunity (naturally and acquired)
Active immunity (naturally and acquired)
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16
Q

Passive immunity

A

Received from others

17
Q

Natural passive immunity

A

Maternal transfer

18
Q

Acquired passive immunity

A

Inoculation of antibodies or immune serum

19
Q

Active immunity

A

Formed by body

20
Q

Natural active immunity

A

From infection

21
Q

Acquired active immunity

A

Inoculation of killed agent or its products

22
Q

Percutaneous trauma defenses

A

Sensory signals, resilient collagen tissue, self-repairing properties

23
Q

_____ is barrier to bacteria

A

Skin

24
Q

Some toxic materials especially those lipid soluble substances easily penetrate the skin; some toxic substances are excreted in _____

A

Sweat