A 57-year-old patient has been diagnosed with inflammation of the inner lining of the heart. What is this condition called?
A) congestive heart failure
B) endocarditis
C) pericarditis
D) atrial septal defect
B
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The binding of a peptide hormone to its receptor starts a biochemical chain of events that changes the pattern of __________.
a. diffusion through the lipid portion of the cell membrane b. enzymatic activity within the cell c. An RNA transcription in the nucleus d. calcium ion release or entry into the cell
Which of the following provides preganglionic parasympathetic innervation to structures in the thoracic and abdominopelvic cavities?
A) vagus nerves B) sciatic nerves C) glossopharyngeal nerves D) pelvic nerves E) splanchnic nerves
A. detect acceleration of the head. B. amplify sound waves and transmit them to the inner ear. C. determine static head position. D. support the tympanic membrane and protect hair cells of the inner ear. E. initiate action potentials that propagate to the
A. much larger than the tympanic membrane, and the ossicles therefore amplify sound waves. B. much smaller than the tympanic membrane, and the ossicles therefore amplify sound waves. C. much larger than the tympanic membrane, and the ossicles therefore dampen sound waves. D. much smaller than the tympanic membrane, and the ossicles therefore dampen sound waves.
What type of cells do natural killer cells destroy?
a. antibody marked cells b. bacteria and virus-infected cells c. bacteria and cancerous cells d. cancerous cells and virus-infected cells e. None of the above