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Anatomy Week 11 Quiz
| Question | Answer |
|---|---|
| Recognition of antigens by antibodies occurs when an | Antigen's epitopes fit into and bind to an antibody molecule's antigen-binding sites |
| Activities that result in central movement or flow of lymph are called | lymphokinetic activities. |
| The lymphatic system serves various functions in the body. The two most important functions of this system are | fluid balance and immunity |
| The presentation of an antigen by an antigen-presenting cell activates the T cell. The cell then divides repeatedly to form a clone of identical sensitized T cells that form | effector T cells and memory cells |
| A tumor of the lymphoid tissue is called | lymphoma |
| Masses of lymphoid tissue located in a protective ring under the mucous membranes in the mouth and the back of the throat are called | tonsils |
| Lymphatics in the villi of the small intestines are called | lacteals |
| Adaptive immunity, part of the body’s third line of defense, is orchestrated by two different classes of a type of white blood cell called the | lymphocyte |
| Lymphocytes that kill many types of tumor cells and cells infected by different kinds of viruses are known as | natural killer cells |
| During their residence in the thymus, pre-T cells develop into _____, cells that proliferate as rapidly as any in the body. | thymocytes |
| Which antibody is synthesized by immature B cells and then inserted into their plasma membranes? | immunoglobulin M |
| Which of these substances operate(s) immune mechanisms? | Sebum, mucus, enzymes, hydrochloric acid in gastric mucosa (all) |
| Each cortical nodule is composed of packed lymphocytes that surround a less dense area called a | germinal center |
| Bean-shaped structures located at certain intervals along the lymphatic system are | lymph nodes |
| The internal environment of the human body is protected by the _____, which is(are) referred to as the first line of defense. | skin |
| The ingestion and destruction of microorganisms or other small particles is called | phagocytosis |
| The _____ postulates that when an antigen enters the body, it selects the clone whose cells are committed to synthesizing its specific antibody and stimulates these cells to proliferate and to thereby produce more antibodies. | clonal selection theory |
| Pyrogen molecules trigger the fever response by promoting the production of | prostaglandins |
| The movement of phagocytes from blood vessels to an inflammation site is called | diapedesis |
| Which protein interferes with the ability of viruses to cause disease? | interferon |
| _____ refers to a phenomenon in which the genetic characteristics common to a particular kind of organism provide defense against certain pathogens. | species resistance |
| Chemotaxis is the process by which a cell navigates toward the source of the chemotactic factor by way of | detecting and then moving toward higher concentrations of the factor. |
| The primary organ of the lymphatic system is the | thymus |
| Which of the following is a powerful poison that acts directly on any cell and quickly kills it? | lymphotoxin |
| Because T cells attack pathogens more directly, T-cell immune mechanisms are classified as _____ immunity. | cell-mediated |
| Antibodies are proteins of the family called | immunoglobulins |
| Molecules formed by the reactions of the complement cascade assemble themselves on the enemy cell’s surface, which results in | cytolysis |
| The functions of the lymph nodes are | defense and hematopoiesis |
| The body’s defense mechanisms can be organized into one of two major categories of immune mechanisms; these are | innate and adaptive immunity |
| Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir? | spleen |
Created by:
Janelleu4771
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