Multiple Choice QuestionWhen microorganisms invade tissues, leukocytes release chemicals that ______, producing swelling that delays the spread of pathogens to other areas of the body. Multiple choice question.constrict small blood vesselsdilate small blood vessels make large blood vessels less permeablemake small blood vessels more permeable

Basophils migrate to damaged tissues where they release ______ (which promotes inflammation) and ______ (which inhibits blood clotting).Multiple choice question.histamine; heparinheparin; serotoninprostacyclin; heparin

Which of the following is true regarding the inflammation cascade?Group of answer choicesPermeability of the vessels decreaseLeukocytes travel away from the site of the infectionChemical mediators lure leukocytes to the site of injury or infectionInflammation is always considered a negative response to injury or infection

Fill in the Blank QuestionFill in the blank question.Biochemicals released by leukocytes cause an increase in permeability of small blood vessels at sites where  microorganisms have invaded human tissues. This results in swelling, an accumulation of fluid in the interstitial spaces, and is called a(n) response.

Which type of white blood cell leaves the bloodstream, migrates into certain tissues, and transforms into macrophages?Multiple choice question.neutrophileosinophilmonocytelymphocyte

The process called ______ results in leukocytes being attracted to a site of tissue damage. They are attracted by chemicals released by damaged cells.Multiple choice question.diapedesispositive chemotaxisameboid motion