Immunity and Defense Final Test

The final quiz in the second unit, Immunity and Defense, in the course Animal Anatomy and Physiology at Penn Foster College

What's the largest lymphoid organ?

Spleen

In an inflammatory response, which of the following steps would happen first?

Dilation of blood vessels to improve blood flow to the injury

Pathogens often infect very young or very old animals due to which factor?

Immune system strength

What would cause the spleen to need to be removed?

Trauma to the area causing the spleen to bleed

A newborn can receive antibodies from its mother, providing an example of what type of immunity?

Passive

Red bone marrow contains __________ that develop into white blood cells.

Stem cells

Which cell type produces antibodies?

Plasma cells

Which type of immunoglobulin can cross the placenta?

IgG

The most important functions of the complement system are to alter microbial cell membranes and __________

Initiate an inflammatory response

Which molecule would be produced during a viral infection to protect uninfected cells?

Interferon

What's the function of PAMPs, PRRs, and complement receptors?

Differentiate between self and non-self cells

An animal is vaccinated against parvovirus and forms antibodies against that disease. This is an example of what type of immunity?

Active

Adaptive immunity is __________

associated with memory cells

In a type 1 hypersensitivity reaction, which type of immunoglobulin will an antigen typically bind at first exposure?

IgE

Which of the following body fluids is NOT part of the first line of defense against invaders?

Lymph

What's required for the first line of innate immunity?

Intact skin

Which of the following is an example of a systemic symptom of inflammation?

Fever throughout the body

Which of the following is a protein on the surface of a pathogen?

Antigen

A cut on the skin will activate which process?

Inflammatory response

Which type of blood cell has a primary role in immune function?

White blood cells