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A&P ch 5-7
Terms in this set (51)
The thymus is where ___ mature and become functional immune cells
These statements concerning neutrophils and macrophages are true
- the both exhibit chemotaxis
- they both move by amoeboid
- both are capable of phagocytosis
- both can squeeze between cells
The redness and heat seen in an inflamed area are the result of
increased blood flow to the area
The MHC class I antigen complex displays a foreign antigen on the cell surface. This prompts the immune system to destroy
the displaying cell
The secondary or memory response
provides better protection than the primary response
If you receive an immunization for hepatitis B and produce antibodies against the hepatitis B virus, you have developed what type of adaptive immunity?
active artificial immunity
Transplanted tissues and organs that contain ____ are rejected by the body
The inflammatory response
prevents the spread of an infection
A child is born with a congenital disease that results in total loss of B cells. Which of the following would be a consequence of this immunodeficiency?
lack of antibody formation
Which of the following might occur after a helper T cell is presented with a processed antigen and costimulated?
Helper T cells release interleukins that stimulate B cells to clone
As a result of opsonization
antigens are more susceptible to phagocytosis
A traditional method of providing temporary immunity for a person who is suspected of being infected (usually be an animal bite) with rabies is classified as
passive artificial immunity
Primary lymphatic organs include the
red bone marrow and thymus
The HIV virus can be transmitted
during unprotected sexual intercourse
when activated become plasma cells and produce antibodies
Natural Killer (NK) cells
secrete enzymes that kill tumor or virus-infected cells
What areas of an antigen are recognized by lymphocytes so that they can respond?
both antigenic determinants and epitopes are correct
____ are part of cell-mediated immunity while ____ are part of antibody-mediated immunity
T cells, B cells
The volume of air inspired or expired with each breath is the
Whose law explains that an increase in volume causes a decrease in pressure?
The chemosensitive area of the brain is located in the
The diameter of bronchioles can change because their walls contain
What type of alveolar cells produce surfactant?
type II pneumocytes
The walls of the alveoli
are composed of simple squamous epithelium
If the total pressure of a mixture of gases was 760 mm Hg and its composition is 20% oxygen, 0.04% carbon dioxide, 75% nitrogen, and 5% water vapor, then the partial pressure of oxygen would be
152 mm Hg
A greater than normal amount of CO2 in the blood is called
As temperature increases, how would this affect the oxyhemoglobin-dissociation curve?
shift it to the right
Which of the following statements regarding the lungs is correct?
the left lung contains two lobes while the right lung contains three lobes
Which of the following increases the rate of gas exchange across the respiratory membrane?
increased surface area of the respiratory membrane
Functions of the pseudostratified ciliated columnar epithelium of the nasal cavity
- traps dirt and removes it from the air
- moisturizes the air
- exchanges oxygen and carbon dioxide
Which of the following respiratory membrane layers is closest to air in the alveolus?
alveolar fluid (with surfactant)
Which of the following will cause a decrease in the surface area of the respiratory membrane?
As acidity increases, how does this affect the affinity of hemoglobin for the oxygen it carries?
oxyhemoglobin affinity decreases
Which of the following structures opens directly into the nasal cavity?
The Haldane effect means that
as hemoglobin release O2, the ability to pick up CO2 increases
Arrange the following structures in order from the small intestine to the rectum
The intestinal phase of gastric secretion
is controlled by the entrance of acidic chyme into the duodenum
The anal canal
has an internal sphincter composed of smooth muscle
Small droplets of digested lipids surrounded by bile salts are called
moistens food and begins starch digestion in the mouth
The muscularis layer in the wall of the digestive tract is
composed of a layer of circular smooth muscle fibers and a layer of longitudinal smooth muscle fibers
The digestive juice that contains enzymes capable of digesting all major food groups is
The pyloric pump
moves chyme through a partially closed pyloric opening
Fatty acids and certain lipids in the duodenum initiate the release of
gastric inhibitory peptide and cholecystokinin (CCK)
pulp cavity - cementum
Inflammation of the gums is called
Which of the following is NOT an accessory organ of the digestive tract?
Which part of the pharynx is NOT involved with food transport?
Does NOT illustrate digestion
CO2 and H2O --> carbohydrates
Which of the following regions of the stomach is correctly matched with its description?
pylorus - the most inferior portion of the stomach
Which of the following apply to the small intestine?
all of these
- secretions from the liver and pancreas enter this organ
- segmentation contractions occur in this organ
- both digestion and absorption occur in this organ
- mixing and propulsion of chyme
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