front 1 Which of the following is not a category of Endocrine Gland Stimulus? A) Enzyme | back 1 A) Enzyme |
front 2 Chemical Substances secreted by cells into the extracellular fluids that regulate the metabolic function of other cells in the body are called? A) Enzymes | back 2 D) Hormones |
front 3 The Hypothalamic-Hypophyseal tract_______. A) Connects the hypophysis to the pituitary gland B) Is partly contained within the infundibulum C) Conducts aldosterone to the hypophysis D) is the site of prolactin synthesis | back 3 B) Is Partly Contained within the infundibulum |
front 4 Oxytocin____. A) release is an example of a positive feedback control mechanism B) is an adenohypophyseal secretion C) exerts its most important effects during menstruation D) controls milk production. | back 4 A) release is an example of a positive feedback control mechanism |
front 5 ADH____ A) Increases urine production B) Promotes dehydration C) is produced in the adenohypophysis D) Is inhibited by alcohol | back 5 D) is inhibited by alcohol |
front 6 The ability of a specific tissue or organ to respond to the presence of the hormone is dependent on_____. A) the location of the tissue or organ with respect to the circulatory path B) the membrane potential of the cells of the target organ C) the presence of the appropriate receptors on the cells of the target tissue or organ D) nothing all hormones of the human body are able to stimulate any and all cell types because hormones are powerful and nonspecific | back 6 C) The presence of the appropriate receptors on the cells of the target tissue or organ |
front 7 Several hormones are synthesized in the hypothalamus and transported to the anterior pituitary gland. The Mechanism of transportation from hypothalamus to anterior pituitary gland is through the_____. A) hepatic portal system B) General circulatory system C) hypophyseal portal system D) Feedback loop | back 7 C) Hypophyseal portal system |
front 8 The neurohypophysis or posterior lobe of the pituitary gland is not a true endocrine gland because ________. A) it is strictly a part of the neural system and has little or nothing to do with hormonal release B) embryonically it was an endocrine tissue, but in the adult human it is no longer functional C) it is unable to function as an endocrine tissue because it is actually part of the neural system due to its location D) it is only a hormone storage area that receives hormones from the hypothalamus for release | back 8 D) it is only a hormone storage area that receives hormones from the hypothalamus for release |
front 9 Steroid hormones exert their action by ________. A) entering the nucleus of a cell and initiating or altering the expression of a gene B) finding an appropriate cell receptor and initiating cAMP activity C) stimulating the synthesis of a glycogen D) increasing blood pressure | back 9 A) entering the nucleus of a cell and initiating or altering the expression of a gene |
front 10 The second-messenger mechanism of hormone action operates by ________. A) synthesizing more of the hormone than is actually needed B) increasing the basal metabolic rate in the target organ C) not responding to a feedback mechanism D) Binding to specific receptors and employing the services of G proteins and cAMP | back 10 D) Binding to specific receptors and employing the services of G proteins and cAMP |
front 11 One of the least complicated of the endocrine control systems directly responds to changing blood levels of ions and nutrients. Which of the following describes this mechanism? A) the rapid oxidation of carbohydrates B) catabolic inhibition C) protein synthesis D) humoral stimulation | back 11 D) humoral stimulation |
front 12 The major targets of growth hormone are ________. A) the blood vessels B) the adrenal glands C) the liver D) bones and skeletal muscles | back 12 D) bones and skeletal muscles |
front 13 Regulating hormones from the hypothalamus ________. A) enter venous circulation and travel to the heart, which pumps the hormone-containing blood to the pituitary B) enter the hepatic portal system, which feeds the pituitary C) travel by arteries to the pituitary D) First enter into the hypophyseal portal system | back 13 D) First enter into the hypophyseal portal system |
front 14 Which organ does not have hormone production? A) heart B) kidney C) Liver D) skin | back 14 C) Liver |
front 15 A man has been told that he is not synthesizing enough
follicle- A) FSH stimulates estrogen secretion by ovarian cells; therefore it is not synthesized by males. B) The physician is wrong a hormone made in the adenohypophysis could not influence fertility. C) FSH stimulates sperm production in the testes. D) The man must be producing progesterone, which inhibits the synthesis of FSH. | back 15 C) FSH stimulates sperm production in the testes. |
front 16 Glucocorticoids enable the body to deal appropriately with stress. They accomplish this by ________. A) Increasing blood glucose, fatty acid, and amino acid levels and enhancing blood pressure B) decreasing the heart rate, thus decreasing blood pressure C) stimulating the pancreas to release insulin D) blocking the neurotransmitters that prepare the body for the stress response | back 16 A) Increasing blood glucose, fatty acid, and amino acid levels and enhancing blood pressure |
front 17 Small organs associated with lymphatic vessels are termed ________. A) lymph follicles B) Lymph nodes C) axillary nodes D) cisterna chili | back 17 B) Lymph nodes |
front 18 The thymus is most active during ________. A) fetal development B) Childhood C) Middle age D) old age | back 18 B) Childhood |
front 19 Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax? A) lumbar trunk B) thoracic duct C) right lymphatic duct D) cisterna chili | back 19 C) right lymphatic duct |
front 20 The lymphatic capillaries are ________. A) More permeable than blood capillaries B) less permeable than blood capillaries C) as permeable as blood capillaries D) completely impermeable | back 20 A) More permeable than blood capillaries |
front 21 Antibodies that act against a particular foreign substance are released by ________. A) T lymphocytes B) Plasma cells C) lymph nodes D) medullary cords | back 21 B) Plasma cells |
front 22 Lymph leaves a lymph node via ________. A) Efferent lymphatic vessels B) afferent lymphatic vessels C) the cortical sinus D) the subscapular sinus | back 22 A) Efferent lymphatic vessels |
front 23 Which cells become immunocompetent due to thymic hormones? A) basophils B) Lymphocytes C) macrophages D) monocytes | back 23 B) Lymphocytes |
front 24 Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) ________. A) Tonsil B) thymus C) Peyer's patch D) appendix | back 24 A) Tonsil |
front 25 Which of the following is not a mucosa-associated lymphatic tissue? A) tonsil B) Thymus C) Peyer's patch D) appendix | back 25 B) Thymus |
front 26 Lymph capillaries are absent in all but which of the following? A) bones and teeth B) bone marrow C) CNS D) Digestive organs | back 26 D) Digestive organs |
front 27 What is a bubo? A) a wall in a lymph node B) a lobe of the spleen C) an infected Peyer's patch D) An infected lymph node | back 27 D) An infected lymph node |
front 28 The thymus is the only lymphoid organ that does not: A) have lymphocytes B) produce hormones C) have a cortex and medulla D) Directly fight antigens | back 28 D) Directly fight antigens |
front 29 Large clusters of lymph nodes occur in all of the following locations except the ________. A) inguinal region B) cervical region C) axillary region D) Lower extremities | back 29 D) Lower extremities |
front 30 Which of the following is not a method that maintains lymph flow? A) skeletal muscle contraction B) breathing C) valves in lymph vessel walls D) Smooth muscle contraction | back 30 D) Smooth muscle contraction |
front 31 The tonsils located at the base of the tongue are the ________. A) Lingual tonsils B) palatine tonsils C) pharyngeal tonsils D) Peyer's tonsils | back 31 A) Lingual tonsils |
front 32 Which of the following are functions of lymphoid tissue? A) house and provide a proliferation site for lymphocytes B) house and provide a proliferation site for neutrophils C) furnish an ideal surveillance vantage point for lymphocytes and macrophages D) A and C | back 32 D) A and C |
front 33 Which of the following is not a type of T cell? A) cytotoxic B) Antigenic C) helper D) regulatory | back 33 B) Antigenic |
front 34 B lymphocytes develop immunocompetence in the ________. A) thymus B) spleen C) Bone marrow D) lymph nodes | back 34 C) Bone marrow |
front 35 Which of the following is not a function of the inflammatory response? A) prevents the spread of the injurious agent to nearby tissue B) replaces injured tissues with connective tissue C) disposes of cellular debris and pathogens D) sets the stage for repair processes | back 35 B) replaces injured tissues with connective tissue |
front 36 The redness and heat of an inflamed area are due to a local hyperemia caused by ________. A) vasodilation B) vasoconstriction C) phagocyte mobilization D) production of complement and interferon | back 36 A) vasodilation |
front 37 In clonal selection of B cells, which substance is responsible for determining which cells will eventually become cloned? A) antigen B) interferon C) antibody D) complement | back 37 A) antigen |
front 38 The only T cells that can directly attack and kill other cells are the ________. A) regulatory cells B) helper cells C) cytotoxic cells D) plasma cells | back 38 C) cytotoxic cells |
front 39 ________ predominate at the sites of chronic infections. A) Basophils B) Eosinophils C) Macrophages D) B cells | back 39 C) Macrophages |
front 40 Interferons ________. A) are virus-specific, so that an interferon produced against one virus could not protect cells against another virus B) act by increasing the rate of cell division C) Interfere with viral replication within cells D) are routinely used in nasal sprays for the common cold | back 40 C) Interfere with viral replication within cells |
front 41 Cancer cells and virus-infected body cells can be killed before activation of adaptive immunity by ________. A) natural killer cells B) T lymphocytes C) B lymphocytes D) pinocytosis | back 41 A) natural killer cells |
front 42 Which of the following is not characteristic of the adaptive immune system? A) It is antigen-specific. B) It is systemic. C) It has memory. D) It is specific for a given organ. | back 42 D) It is specific for a given organ. |
front 43 Innate immune system defenses include ________. A) B cells B) T cells C) plasma cells D) phagocytosis | back 43 D) phagocytosis |
front 44 Fever ________. A) is a higher-than-normal body temperature that is always dangerous B) decreases the metabolic rate of the body to conserve energy C) Production is regulated by chemicals that reset the body's thermostat to a higher setting D) causes the liver to release large amounts of iron, which seems to inhibit bacterial replication | back 44 C) Production is regulated by chemicals that reset the body's thermostat to a higher setting |
front 45 Immunocompetence ________. A) occurs in one specific organ of the adaptive immune system B) Is the ability of individual cells to recognize a specific antigen by binding to it C) prevents intercellular communication so that only specific cell types respond to the invader D) requires exposure to an antigen | back 45 B) Is the ability of individual cells to recognize a specific antigen by binding to it |
front 46 Clonal selection of B cells ________. A) occurs during fetal development B) Results in the formation of plasma cells C) cannot occur in the presence of antigens D) only occurs in the secondary immune response | back 46 B) Results in the formation of plasma cells |
front 47 The primary immune response ________. A) occurs more rapidly and is stronger than the secondary response B) occurs when memory cells are stimulated C) is another name for immunological memory D) Has a lag period while B cells proliferate and differentiate into plasma cells | back 47 D) Has a lag period while B cells proliferate and differentiate into plasma cells |
front 48 What is the role of interferon in defense against disease? A) Protects cells that have not yet been infected by viruses B) protects cells that have not yet been infected by bacteria C) activates the complement mechanism D) activates the inflammatory process | back 48 A) Protects cells that have not yet been infected by viruses |