Which are both mechanical barriers to the transmission of pathogens? skin and stomach acid O mucus and stomach acid skin and hairs in the nose O mucus and white blood cells
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- Which of the following is not part of MALT? View Available Hint(s) for Part A Peyer's patches lymphoid tissue in the respiratory tract the spleen the appendixExternal defenses against microbial invasion include the_____and the mucous membranes that line the__________,_______,and______ tracts.True or false Tolerance to commensal microbes can be broken and effector immune responses elicited if these bacteria across the GI epithelium and enter lymphatic system or bloodstream
- The term for a circumscribed collection of pus deep in the tissues is ___. Response Feedback: Think about the infection at the base of a tooth as a good exampleWhich is described as the faster response to infection, when one is immune? O primary response O secondary response O autoimmune response O tertiary responseWhich of the following would most likely increase a person's risk of invasion by pathogenic microbes? select all that apply Increased action of cilia Loss of epidermal tissue Decreased urine flow Decreased interstitial fluid osmotic pressure Increased intestinal motility
- Which of the following is not characteristic of a response to a previously encountered pathogen? * rapid production of antibodies rapid division of memory cells destruction of the pathogen before the person knows he or she is infect release of large amounts of histamineThe concentration of which of the following proteins will most likely decrease in association with an acute inflammatory condition? Albumin, C-reactive protein, Alpha-2-macroglobulin, and Complement C3the mucosa of esophagus contain Langerhans cells that act as antigen presenting cells true False
- Which of these are the products of the immune response that will stay with the person for long term immunity? Memory-T's and circulating antigen Helper T's and circulating antigen Memory T's and thymus Memory-T's and circulating antibodyDescribe the interactions between gut microbes immune cells and enteroendocrine cells and how the chemicals they produce can make their way to the brain.A few days ago, a recall notice was issued for frozen strawberries sold in the Portland area because several cases of hepatitis A in Washington were linked to these products. Presumably, the strawberries were either irrigated or otherwise contaminated with water containing human feces that harbored hepatitis A virus. This is an example of which type of microbial sourced for foodborne illness? Contamination by human or animal feces during growing, harvesting, washing, transport, or storage Contamination by naturally occurring environmental organisms from soil or other sources None of the other four answers are correct Contamination by human microbiota or pathogens during handling & preparation A food animal - infection or colonization during its lifetime