Answers
The actual sites of gas exchange within the lungs are - ANSWERSAlveoli
During an attack of asthma, an individual's - ANSWERSBronchioles constrict
Most of the carbon dioxide in the blood is transported as - ANSWERSBicarbonate ions
in the plasma
The most important gas to regulate respiratory rate is - ANSWERSCO_2
Too much CO_2 will cause __________ in the blood and result in _______________. -
ANSWERSmore H^+; respiratory acidosis
Air moves into the lungs because - ANSWERSThe gas pressure in the lungs is less
than outside pressure
Parietal cells in the stomach secrete - ANSWERSHydrochloric acid
An intestinal hormone that stimulates the pancreas to release buffer for regulation of
intestine pH is - ANSWERSSecretin
An intestinal hormone that stimulates the pancreas to release insulin - ANSWERSGIP
The fusion of the hepatic duct and the cystic duct forms the - ANSWERSCommon bile
duct
The exocrine portion of the pancreas is composed of - ANSWERSPancreatic acini
The nutrient rich blood is transported from small intestine to liver through the -
ANSWERSHepatic portal vein
When the glucoses in the lumen of small intestine are higher than blood, the glucoses
are absorbed through - ANSWERSFacilitated diffusion
The following nutrient is absorbed and transported through the lacteal and lymphatic
circulation before entering the blood circulation. - ANSWERSFatty acids
Most of small intestine enzymes are from _____________ organs. -
ANSWERSPancreas
, The respiratory epithelum of the conducting airways consists of: -
ANSWERSPseudostratified ciliated columnar epithelium
The respiratory defense system is important because it - ANSWERSHelps filter air,
warm the air, keep debris and pathogens out
The diameter of bronchioles can change because their walls contain -
ANSWERSSmooth muscle
Harry suffers from cystic fibrosis and has severe breathing difficulties. His problems
result from - ANSWERSThick mucous secretions in the lungs that are difficult to
transport gases
Asthma is - ANSWERSAn acute condition resulting from unusually sensitive, irritated
conducting airways
Air moves out of the lungs when the pressure inside the lungs is: - ANSWERSGreater
than the pressure in the atmosphere
During exercise, which of the following muscles contract for active exhalation: -
ANSWERSRectus abdominis and internal intercostal muscles
What is the name of the disease that causes respiratory acidosis? -
ANSWERSEmphysema
A 10% increase in the level of carbon dioxide in the blood will: - ANSWERSIncrease in
the rate of breathing
Carbon dioxide is carried in three forms in the blood. Ranking them from greatest to
least amount carried, the sequence would be: - ANSWERSBicarbonate ion,
carbaminohemoglobin, and dissolved in plasma
Large blood vessels and lymphatics are found in the - ANSWERSSubmucosa
The following does not contain mucous cells in the epithelium: - ANSWERSEsophagus
Chief cells secrete: - ANSWERSPepsinogen
These enhance the absorptive effectiveness of the small intestine - ANSWERSPlicae
circulares, villi, microvilli, and intestinal movements
The intestinal hormone that stimulates the pancreas to release a watery, bicarbonate-
rich fluid and stimulates liver to release bile is: - ANSWERSSecretin
An intestinal hormone that stimulates the release of insulin from the pancreatic islet
cells is: - ANSWERSGIP (gastric inhibitory peptide)