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25 Cards in this Set
- Front
- Back
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Which of the following describes structures from the conduction zone?
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Bronchus, nasal cavity, trachea, pharynx
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What structure in the nasal cavity serves to increase the surface area of the mucosa exposed to air?
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Conchae
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What is internal respiration?
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Gas exchange between the blood and the tissue cells
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What is the role of the diaphragm in breathing?
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When the diaphragm contracts, the thoracic cavity increases in size and inspiration occurs.
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What determines the flow of gases across the respiratory membrane?
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Gases flow from a higher to lower concentration using simple diffusion.
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Which of the following describes the movement of carbon dioxide?
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Carbon dioxide moves from pulmonary capillaries into alveolar air.
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What is the significant function of the residual volume?
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It allows gas exchange to continue even between breaths.
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What area(s) of the brain are involved in the control of breathing?
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Medulla and the pons
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What is an important chemical stimulus that affects breathing rate?
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Increased carbon dioxide levels
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What is the proposed reason for sudden infant death syndrome (SIDS)?
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Impaired neural control of respiration
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Which of the following is associated with COPD?
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Respiratory failure and respiratory acidosis
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In which major digestive organ does most food absorption occur?
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Small intestine
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What layer of the alimentary canal contains nerve fibers and lymphatic tissue?
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Submucosa
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What is the process of chewing called?
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Mastication
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The absorptive effectiveness of the small intestine is enhanced by which of the following structures?
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Plicae circularis and intestinal villi
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Which of the following describes permanent teeth?
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There are 32 permanent teeth, and the wisdom teeth are the last to emerge
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Which of the following describes saliva?
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It dissolves food chemicals so they can be tasted.
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Hydrochloric acid is secreted by which of the secretory cells of the stomach?
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Parietal cells
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What is the enzymatic breakdown of a food molecule called?
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Hydrolysis
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The mucosa tunica of the esophagus is lined with what type of cells?
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Stratified squamous epithelium
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Digestion of which of the following would be most affected if the liver were severely damaged?
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Lipids
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The ingestion of a meal high in fat content would cause which of the following to occur?
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Bile would be released from the gall bladder to emulsify the fat in the duodenum.
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What are the essential amino acids?
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Amino acids that must be obtained through diet.
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What is basal metabolic rate?
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Total amount of heat produced by the body per unit of time at rest
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A person who has collapsed due to dehydration but still maintains effective heat loss mechanisms is experiencing what disorder?
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Heat exhaustion
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