Microbiology Unit- 3.1 GBSN-1: Nonspecific/Innate Resistance

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What is the role of the immune system in the human body?

To plan with wisdom and skill
To engage in battle with microbes (correct)
To provide a record of enemies
To create flawless designs

What is the immune system compared to?

A flawless creation
An extraordinary evolution
An army (correct)
A desperate theory

What is the main evidence of a flawless creation according to the text?

The refusal to comply with something
The record of enemies
The ability to limit pathogen burden
The outcome of a unique design (correct)

What has been the historical relationship between human beings and microorganisms according to the text?

A continual battle causing infection and disease (A) Signup and view all the answers

What does the text suggest about the theory of evolution in comparison to the immune system?

It is desperate in the face of this extraordinary creation (C) Signup and view all the answers

How is 'resistance' defined in the context of the text?

Ability to limit pathogen burden (D) Signup and view all the answers

What are the 4 barriers to infection in the body's nonspecific resistance?

Anatomic, Physiologic, Phagocytic, Inflammatory (A) Signup and view all the answers

Which bodily substance acts as a barrier to invasion due to its physical nature?

Skin (C) Signup and view all the answers

What is the function of stomach acid in the body's nonspecific resistance?

Destroying pathogens (D) Signup and view all the answers

Which bodily fluid contains lysozyme that renders antigens harmless?

Tears (B) Signup and view all the answers

What are contributors to nonspecific resistance according to the text?

Skin and mucous membranes, Phagocytosis, Inflammatory response (D) Signup and view all the answers

What does nonspecific resistance refer to?

Defenses against any pathogen type (B) Signup and view all the answers

What is one of the functions of the immune system mentioned in the text?

Eliminating modified self (A) Signup and view all the answers

How does good health contribute to protection against microbial infections?

By boosting the immune system (B) Signup and view all the answers

Where are lymphoid nodules found in the immune system?

Inside various organs (C) Signup and view all the answers

During sickness, what is described as happening in our bodies?

Bitter struggle involving foreign organisms (C) Signup and view all the answers

What can happen if the body lacks a defense mechanism against invading organisms?

Increased risk of death within a week (D) Signup and view all the answers

Where is GALT located as part of the immune system?

Mucosa of digestive system (A) Signup and view all the answers

How does good health affect productivity at work, according to the text?

By enhancing efficiency and productivity (B) Signup and view all the answers

Which of the following is considered MALT in the immune system?

(Tonsils, Peyer’s patches) (C) Signup and view all the answers

What are examples of lymphoid organs in the immune system?

Lymph nodes, spleen, thymus (C) Signup and view all the answers

What are some functions of a good immune system mentioned in the text?

Eliminating pathogens and altered self (B) Signup and view all the answers

What is one of the functions of the immune system according to the text?

Protect the host from environmental agents (C) Signup and view all the answers

What is mentioned as a beneficial effect of the immune system?

Protection from invaders (C) Signup and view all the answers

What is the process of engulfment and destruction of solid particles by cells called?

Phagocytosis (B) Signup and view all the answers

Which cells in the immune system are responsible for phagocytosing invading bacteria or dead/dying cells?

All of the above (D) Signup and view all the answers

What is the physiological process where white blood cells move through the walls of blood vessels into surrounding tissues called?

Diapedesis (C) Signup and view all the answers

Which term describes the step where leukocytes assume marginal positions in the blood vessels?

Margination (C) Signup and view all the answers

What are the cells involved in the process of phagocytosis commonly referred to as?

Phagocytes (D) Signup and view all the answers

In phagocytosis, which type of cells move through the walls of blood vessels to reach sites of infection or injury?

White Blood Cells (B) Signup and view all the answers