Exam 14: Host Defenses I: Overview and Nonspecific Defenses

The circulating substances that affect the hypothalamus and initiate fever are ______.

Which of the following lymphoid organs or tissues has the immunological function of filtering pathogens from the blood?

The most numerous WBCs that have multilobed nuclei and are very phagocytic are ______.

The _____ system of blood proteins act to lyse foreign cells and viruses.

The least numerous of all white blood cells that release histamine during inflammation and allergic reactions are ______.

The term _____ is given to any foreign substance that stimulates a speci?c immune system response.

All of the following comprise the second line of defense except ______.

Despite not being a physical barrier, the resident microbiota are considered part of the ?rst line of defense since they stimulate in?ammation and fever, enhancing pathogen removal.

Genetic differences among species and within a species can convey genetic immunity to certain diseases.

Which white blood cells comprise 20% to 30% of the circulating WBCs and are the cells that function in the body's specific immune system?

The granules of neutrophils contain ______.