Question 1
1 ptOf the following selections, the one that includes only nonspecific defenses is:
Anatomy and Physiology · Division C · Tiger Invitational · 2018
100 questions · 100 points · 50 min
Original test sourcePlease circle the choice that BEST answers the following questions.
Of the following selections, the one that includes only nonspecific defenses is:
The protective categories that prevent the approach of, deny entrance to, or limit the spread of microorganisms or other environmental hazards are called:
NK (natural killer) cells sensitive to the presence of abnormal cell membranes are primarily involved with:
The four general characteristics of specific defenses include:
The two major ways that the body “carries” out the immune response are:
The fact that people are not subject to the same diseases as goldfish describes the presence of:
When an antigen appears, the immune response begins with:
Before an antigen can stimulate a lymphocyte, it must first be processes by a:
The most important antibody action in the body is:
Antibodies may promote inflammation through the stimulation of:
The antigenic determinant site is the certain portion of the antigen’s exposed surface where:
In order for an antigenic molecule to be a complete antigen, it must:
The major function of interleukins in the immune system are to:
The ability to demonstrate an immune response upon exposure to an antigen is called:
Fetal antibody production is uncommon because the developing fetus has:
When an immune response mistakenly targets normal body cells and tissues, the result is:
Chemical mediators of inflammation include:
T lymphocytes comprise approximately ____ percent of circulating lymphocytes.
B lymphocytes differentiate into:
The primary response of T-cell differentiation in cell-mediated immunity is the production of -- cells.
The three-dimensional “fit” between the variable segments of the antibody molecule and the corresponding antigenic determinant site is referred to as the:
One of the primary nonspecific effects that glucocorticoids have on the immune response is:
The “patrol force” of the alveolar epithelium involved with phagocytosis is comprised primarily of:
Structures in the trachea that prevent its collapse or overexpansion as pressures change in the respiratory system are the:
The entry of liquids or solid food into the respiratory passageways during swallowing is prohibited by the:
The purpose of the hilus along the medial surface of the lung at the level of the branching primary bronchi is to:
Structural features that make the lungs highly pliable and capable of tolerating great changes in volume are:
After passing through the trachea, the correct pathway a molecule of inspired air would take to reach an alveolus is:
The serous membrane in contact with the lung is the:
A necessary feature for normal gas exchange in the alveoli is:
The movement of air into and out of the lungs is primarily dependent on:
During inspiration there will be an increase in the volume of the thoracic cavity and a(n):
During expiration there is a(n):
Each molecule of the hemoglobin has the capacity to carry -- atoms of oxygen:
During expiration the diaphragm:
Alveolar ventilation can be calculated by:
The output from the baroreceptors affects the respiratory centers causing:
The initiation of the inspiration originates with discharge of inspiratory neurons in the:
As the volume of the lungs increases, the:
The paranasal sinuses include:
A rise in the arterial PCO₂ elevates cerebrospinal fluid (CSF) carbon dioxide levels and stimulates the chemoreceptive neurons of the medulla to produce:
The primary function of pulmonary ventilation is to maintain adequate:
The purpose of the fluid in the pleural cavity is to:
The sympathetic division of the ANS causes ____ of airway smooth muscle; therefore, resistance is ____:
The substance administered during an asthmatic attack to decrease resistance via airway dilation is:
The residual volume is the volume of air:
The maximum amount of air moved in and out during a single breath is:
The most effective means of increasing alveolar ventilation is:
It is important that free H ions resulting from dissociation of H₂CO₃ combine with hemoglobin to reduce the possibility of:
In the pulmonary capillaries the bicarbonate ion is always returned to the:
If you desired to control the rate of respiration voluntarily you might:
One of the early symptoms of emphysema is:
Which of the following organs is not a part of the digestive system?
Of the following selections, the one which contains only accessory structures is:
The active process that occurs when materials enter the digestive tract via the mouth is:
The lining of the digestive tract that plays a defensive role by protecting surrounding tissues against:
The mucous-producing, unicellular glands found in the mucosal epithelium of the stomach and small and large intestine are:
Which of the layers of the digestive tube is (are) most responsible for peristalsis along the esophagus?
Swirling, mixing, and churning motions of the digestive tract provide:
Strong contraction of the ascending and transverse colon moving the contents of the colon toward the sigmoid colon are called:
The three pairs of salivary glands that secrete into the oral cavity include:
Which of the following is secreted by the stomach?
The three divisions of the small intestine are:
What happens to the salivary amylase after it is swallowed?
The primary function(s) of the liver is (are):
The hormone that promotes the flow of bile and of pancreatic juice containing enzymes is:
Undigested food residues are moved through the large intestine in the following sequence:
The important function(s) of the large intestine is/are:
An error in swallowing could most likely be detected by the:
The reason a completely dry food bolus cannot be swallowed is:
The parts of the stomach include:
The two factors that play an important part in the movement of chyme from the stomach to the small intestine are:
The plicae of the intestinal mucosa, which bears the intestinal villi, are structural features that provide for:
Most intestinal absorption occurs in the:
The primary function(s) of the gastrointestinal juice is (are) to:
The two major regions of the large intestine are the:
The muscular sphincter that guards the entrance between the ileum and the cecum is the:
Lymph from the right arm, the right half of the head, and the right chest is received by the:
Anatomically, lymph vessels resemble:
The specificity of an antibody is determined by the:
The major histocompatibility complex (MHC):
Red blood cells that are damaged or defective are removed from the bloodstream by the:
Phagocytes move through capillary walls by squeezing between adjacent endothelial cells, a process known as:
Perforins are proteins associated with the activity of:
Complement activation
The most beneficial effect of fever is that it:
CD4 markers are associated with:
Compared with nonspecific defenses, specific defenses:
Blocking the antigen receptors on the surface of lymphocytes would interfere with:
A decrease in which population would impair all aspects of an immune response?
Skin tests are used to determine if a person:
Surfactant:
The hard palate separates the:
Air moves into the lungs because:
The glottis closes partway through an exhalation. The abdominal and intercostal muscles then contract suddenly creating a pressure that blasts the air out of the respiratory passages. This describes a:
When the diaphragm and external intercostal muscles contract:
The process of internal respiration involves each of the following except that:
Gas exchange at the respiratory membrane is efficient because:
An increase in the partial pressure of carbon dioxide in arterial blood causes chemoreceptors to stimulate the respiratory centers, resulting in:
The primary function(s) of the respiratory system is (are):