Metabolic rate can be measured by the ________.
A. heart and respiration rates
B. amount of heat generated by the body
C. amount of heat generated and the amount of oxygen consumed by the body
D. amount of oxygen consumed by the body
Answer: C
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Tara discovers a rapidly growing lump that doubles in size over a month. A doctor does a biopsy and discovers it's a form of cancer, which can result if
A. mitosis is too infrequent. B. the cell cycle runs backward. C. the cell cycle stops. D. mitosis is too frequent.
Answer the following statements true (T) or false (F)
1. All the structures of the upper respiratory tract are outside the chest cavity. 2. The respiratory membrane and respiratory mucosa are two names for the same structure. 3. The paranasal sinuses drain into the pharynx. 4. The nasal cavities assist in warming and humidifying inspired air. 5. Lacrimal sacs and paranasal sinuses both drain into the same structure.
If peristalsis in the esophagus is insufficient to carry a large bolus to the stomach,
a. a secondary peristaltic wave is initiated by the swallowing center b. a secondary peristaltic wave is initiated and, mediated by the intrinsic nerve plexuses c. the food remains in the esophagus until voluntary swallowing is initiated again d. increased esophageal secretion lubricates the bolus so that it can slide to the stomach e. food never becomes stuck because the esophagus is very distensible
Digestion in the mouth involves
a. hydrolysis of proteins my amylase b. absorption of simple sugars c. hormonal control d. hydrolysis of polysaccharides by amylase e. bile actions