The region of the nasal cavity immediately internal to the nostrils is the _________; it contains coarse guard hairs
A. choanae
B. olfactory region
C. vestibule
D. respiratory region
E. nasopharynx
C
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Taking NSAID pain relievers like aspirin or ibuprofen for several weeks disrupts prostaglandin hormone signalling to cells in the stomach. This causes an interruption in production of the protective inner coating of the stomach, which leads to ulcers and further acid erosion. Which gastric cells are being affected by prolonged use of NSAID pain relievers?
A. Parietal cells B. Chief cells C. Mucous cells D. Microvilli
We know that invertebrates colonized the land before vertebrates did. What is a possible reason for this? Did things have to happen this way?
What will be an ideal response?
Which of the following statements about positive and negative lymphocyte selection is TRUE?
A. In both instances, lymphocytes die after they do their job. B. In both instances, antigens do not recognize pathogens in the body. C. Only positive selection is needed for proper functioning of the immune system. D. It is necessary to have lymphocytes that can fight invaders without harming the body's own tissues.
The sensory receptor cells for the senses of hearing and balance are called ________
Fill in the blank(s) with correct word