What does label B represent?
A) disulfide bond
B) variable segment
C) light chain
D) heavy chain
E) constant segments of light and heavy chains
B) variable segment
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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
The exchange of oxygen and carbon dioxide between the blood and cells throughout the body is called
a. cellular respiration b. internal respiration c. external respiration d. breathing
Choose the statement that does NOT correctly describe the function of the corresponding sensory receptor.
A. Your heart rate increases as baroreceptors in your aorta detect low blood pressure. B. An ice cube feels very cold as thermoreceptors in your fingers detect its temperature. C. You feel searing pain as nociceptors in your skin respond to cell lysis and death from a spider bite. D. Your car appears blue as proprioceptors in your eyes detect light of 420nm wavelength reflecting from it.
Aphasia is a speech impediment due to weakness or lack of coordination of speech muscles
Indicate whether the statement is true or false