Which of the following maintains the patency (openness) of the trachea?
A) pseudostratified ciliated epithelium
B) C-shaped cartilage rings
C) surfactant production
D) surface tension of water
B
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The chamber of the heart forming the apex is the ____________________.
Fill in the blank(s) with the appropriate word(s).
How is the strength of a stimulus encoded by neurons?
A. By the frequency of action potentials B. By whether the action potential peak is positive or negative C. By the size of action potentials D. By the duration of action potentials
Which part of the brain contains the epithalamus, hypothalamus, and the thalamus?
A. Pons B. Medulla oblongata C. Diencephalon D. Cerebrum E. Cerebellum
During translation, three nucleotide sequences (UAG, UGA, or UAA) terminate the process and are therefore called _____________ codons.
Fill in the blank(s) with the appropriate word(s).