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Human Biology > Non Specific Body Defense > Flashcards

Non Specific Body Defense Flashcards

1
Q

What structure contains the digestive enzymes in a phagocytic cell

A

Lysosome

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2
Q

What do phagocytes cells release during the inflammatory response that causes recruitment of specific white blood cells to the site of injury?

A

Cytokines

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3
Q

Which of the following would not be described as a pathogen?

  1. A bacteria found within the digestive system that aids digestion
  2. A virus causing Influenza
  3. A bacteria causing tonsilitis
A

1 only

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4
Q

What do phagocytes release during the inflammatory response causing recruitment of white blood cells to the site of infection?

A

Cytokines

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5
Q

The body has many chemical and physical defences against disease.

  1. Tears
  2. Saliva
  3. Epithelial cells lining the respiratory airways
  4. Epithelial cells lining the digestive system

What of these would be chemical defences?

A

1 and 2

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6
Q

These statements refer to the process of phagocytosis.

  1. Lysosome fuses with phagocytic vesicles releasing digestive enzymes
  2. Phagocyte surrounds and engulfs the pathogen
  3. Products of digestion are released into the cytoplasm of the phagocyte
  4. Pathogen is enclosed in a phagocytic vesicle

What is the correct order to show the process of phagocytosis?

A

2>4>1>3

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7
Q

What is an antigen?

A

Molecules found on the surface of cells that trigger an immune response

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8
Q

The body has many chemical and physical defences against disease.

  1. Tears
  2. Saliva
  3. Epithelial cells lining the respiratory airways
  4. Epithelial cells lining the digestive system

What of these would be physical defences?

A

3 and 4

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9
Q

Which of the following would be described as a pathogen?

  1. A bacteria found within the digestive system that aids digestion
  2. A virus causing Influenza
  3. A bacteria causing tonsilitis
A

2 and 3

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10
Q

What describes the action of histamine at the site of an infection?

A

Vasodilation of the capillary and increases the capillaries permeability

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11
Q

What is a pathogen?

A

An organism that causes harm

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12
Q

What do mast cells release during the inflammatory response that causes vasodilation in the capillary?

A

Histamine

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13
Q

What is the name of the cell that undergoes phagocytosis?

A

Phagocyte

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14
Q

What is a phagocyte?

A

White blood cell that undergoes phagocytosis

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15
Q

During an inflammatory response, what is the function of cytokines?

A

Signals the recruitment of specific white blood cells to the site of infection

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16
Q

What are cytokines made of?

A

Protein

17
Q

What do mast cells release during the inflammatory response that causes recruitment of phagocytes to the site of injury?

A

Histamine

18
Q

What is the main function of Epithelial cells

A

Tightly compact together to form a physical barrier

Human Biology (12 decks)

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