Which of the following is NOT a component of the internal defense system?

Fill in the blank: ________ is a process in which a cell eats another cell.

Fill in the blank: Innate lymphoid cells are a component of the ________ defense system.

Fill in the blank: The innate immune system consists of defenses that act immediately when a host is attacked by a ________.

Which of the following best describes the innate immune system?

Which of the following is a function of the internal defense system in the innate immune system?

What are the three types of barriers that prevent infectious agents from entering the body according to the External Defense System?

What is the main function of the skin in the external defense system?

Which layer of the skin is made up of tightly packed epithelial cells coated in keratin?

Which of the following is NOT found in the dermis?

Lactic acid and fatty acids maintain the skin at a pH of approximately _____?

Proteins with antibacterial effects in the skin include ________.

Mucous membranes line which tracts in the body?

Mucous secretions contain surfactants that block bacteria from adhering to ______ cells.

Fill in the blank: The stomach's hydrochloric acid keeps the pH as low as ____, prohibiting microorganism growth.

Which enzyme in tears and saliva attacks cell walls of gram-positive bacteria?

What keeps the vagina pH at approximately 5?

Normal microbiota in the body play a role in protecting against the colonization of ________.

Which of the following is a component of the Internal Defense System?

Pattern Recognition Receptors (PRRs) recognize molecules unique to infectious organisms called _________

What happens when Pattern Recognition Receptors (PRRs) bind to a pathogen?

Which of the following are examples of Pattern Recognition Receptors (PRRs)?

How many types of Toll-Like Receptors (TLRs) are found in humans?

Where are some Toll-Like Receptors (TLRs) located in human cells?

Toll-Like Receptors (TLRs) are glycoproteins that bind to microbial substances, activating ______ and chemokine production and other processes.

Phagocytosis is enhanced and adaptive immunity is triggered by Toll-Like Receptors (TLRs), destroying pathogens before disease sets in.

According to the diagram, which TLR is associated with recognizing viral dsRNA?

According to the diagram, TLR 4 is found in which cellular location?

Fill in the blank: C-type lectin receptors (CLRs) bind to ______ and β-glucans in fungal cell walls to activate cytokine and chemokine.

Which type of receptor recognizes RNA from RNA viruses and induces production of inflammatory cytokines/type I interferons?

Fill in the blank: Nucleotide-binding oligomerization domain (____)-like receptors (NLRs).

Acute-phase reactants are ______ normally found in serum.

Acute-phase reactants increase rapidly in response to which of the following?

Acute-phase reactants facilitate contact between microbes and phagocytic cells by way of what process.

What do acute-phase reactants limit during phagocytosis?

During inflammation, acute-phase reactants bind to, and recycle, important ______ and minerals.

What is the response time (in hours) for C-reactive protein?

What is the normal concentration (mg/dL) of Serum amyloid A?

Alpha1-antitrypsin has a normal concentration of ______ mg/dL.

Which protein is responsible for clot formation?

Haptoglobin binds _______.

What is the increase factor for Ceruloplasmin during the acute-phase response?

Complement C3 is involved in which functions?

What is the body's overall reaction to injury or invasion by an infectious agent called?

Which of the following is a cardinal sign of inflammation?

Which of the following is a cardinal sign of inflammation?

Which of the following is a cardinal sign of inflammation?

Major Events Involved in Acute Inflammation: Fill in the blank: Resident macrophages and mast cells at the site of infection release _______ that cause vasodilation and induce selectins.

Fill in the blank: Integrins enable the leukocytes to crawl between endothelial cells, a process called _______.

Leukocytes then follow the chemokine concentration gradient to the site of infection, a process called _______.

Which of the following is a type of phagocytic cell attracted to the site of inflammation?

Which of the following is NOT a phagocytic cell attracted to the site of inflammation?

Fill in the blank: The process of phagocytosis is enhanced by opsonins like _____

Which step in the process of phagocytosis involves the outflowing of cytoplasm to surround the microorganism?

What is the role of the HMP shunt in the oxidative burst during the killing of pathogens?

In the O2 independent pathway, what change leads to the activation of lytic enzymes such as defensins?

Fill in the blank: During the oxidative burst, O2 is converted to O2- ; O2- to _______ and OH-.

Which enzyme is involved in the conversion of H2O2 and Cl- to OCl- and H2O in the phagolysosome?

Natural Killer (NK) cells are the first line of defense against cells that are ______ infected, cells infected with other intracellular pathogens, and tumor cells.

Natural Killer (NK) cells recognize altered structures on damaged cells and can eliminate them without prior ______.

NK activity is enhanced by certain ______.

NK cells produce other cytokines that recruit T cells and aid in development of ______ and macrophages.

Based on the diagram, what is the result when inhibition occurs between an NK cell and a target cell?

NK cells can induce apoptosis in which of the following types of target cells?

What is the main purpose of a vaccine?