12) list the 3 ways your body protects from infections. 13) what organ acts as a boundary between germs and your body? a) thymus b) heart c) liver d) skin 14) mucus plays no role in you immune system. true false 15) lymph is a colored liquid that bathes the cells with water and nutrients. true false 16) one job of the lymph system is to filter out a) bacteria b) dirt c) protein d) mucus 17) why are lymph nodes in determining you have an infection? a) they discolor b) they swell c) bad odor d) they move 18) the thymus lives in your chest, between your breast bone and your heart. true false 19) a spleen filters blood looking for a) white blood cells b) foreign cells c) red blood cells d) bone marrow 20) bone marrow only produces red blood cells. true false 21) when an antibody binds to a toxin it is called an antitoxin. true false 22) all white blood cells start in the lungs as stem cells. true falsecorrect answers will be marked as brainlest 23) neutorphils are attracted to foreign material, inflammation and bacteria. true false

The herpes viruses are important enveloped dna viruses that cause disease in vertebrates and in some invertebrates such as oysters. some of the human forms are herpes simplex virus (hsv) types i and ii, causing facial and genital lesions, and the varicella zoster virus (vsv), causing chicken pox and shingles. each of these three actively infects nervous tissue. primary infections are fairly mild, but the virus is not then cleared from the host; rather, viral genomes are maintained in cells in a latent phase. the virus can later reactivate, replicate again, and infect others. in electron micrographs of hsv infection, it can be seen that the intact virus initially reacts with cell surface proteoglycans, then with specific receptors. this is later followed by viral capsids docking with nuclear pores. afterward, the capsids go from being full to being "empty." which of the following best fits these observations? a) viral capsids are needed for the cell to become infected; only the capsids enter the nucleus. b) the viral envelope is not required for infectivity, since the envelope does not enter the nucleus. c) only the genetic material of the virus is involved in the cell's infectivity, and is injected like the genome of a phage. d) the viral envelope mediates entry into the cell, the capsid mediates entry into the nuclear membrane, and the genome is all that enters the nucleus.

A62-year-old man is being treated for an acute myocardial infarction. he originally came to the ed with substernal chest pain and diaphoresis. given his risk factors of hypertension, diabetes, tobacco use, and family history, he is considered high risk. an ecg in the ed reveals a left-bundle branch pattern, and cardiac enzymes are elevated slightly. after a focused evaluation in the ed, the patient receives iv thrombolytics. although his bundle branch pattern never resolves, the patient is chest pain-free and haemodynamically stable after thrombolysis. two days later, however, the patient reports episodes of recurrent chest discomfort and shortness of breath overnight. in evaluating for potential myocardial reinfarction, which of the following is the most appropriate diagnostic test? - creatinine kinase- dynamic ecg changes- lactate dehydrogenase- myoglobin levels- troponin i level

Should abortion be legal or illegal?