Describe the location and function of the auditory ossicles
What will be an ideal response?
Three auditory ossicles are located within each middle ear cavity, found within the petrous part of the temporal bone. The ossicles play a key role in hearing by conducting vibrations produced by sound waves arriving at the tympanic membrane to the internal ear.
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Pulmonary surfactant
a. is secreted by Type II alveolar cells b. decreases surface tension of the fluid lining the alveoli c. resists elastic recoil of the lungs d. is a combination of lipids and proteins e. has all of the above characteristics
Which hormone is produced in the hypothalamus?
What will be an ideal response?
Clonal selection occurs when:
A) plasma cells secrete antibodies. B) B cells undergo rapid mitosis. C) B cells are activated. D) B cells differentiate into plasma cells and memory B cells.
Which type of bone has concentric lamellae?
A. compact bone B. both spongy and compact C. spongy bone