The pharyngotympanic (auditory) tube links the middle ear cavity with the throat
Indicate whether the statement is true or false
TRUE
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Give an example of synergism in hormones.
What will be an ideal response?
In which process is energy required but not directly used to produce movements against concentration gradients?
a. osmosis b. primary active transport c. secondary active transport d. simple diffusion e. facilitated diffusion
ACh binds to ________ receptors on cardiac muscle, smooth muscle, and gland cells.
Fill in the blank(s) with the appropriate word(s).
A recent study demonstrated that there are three unique strains of Propionibacterium acnes; two strains are more prevalent in people with acne; however, one of which appears not to be pathogenic to humans and is more prevalent in people with 'clear' skin. Additionally, the strain of P. acnes found in healthy skin kills invading bacteria, including the pathogenic P. acnes. Which of the following statements about the targeted removal of 'bad' P. acnes and addition of 'good' P. acnes is INCORRECT?
A. Once removed, the invading pathogenic P. acnes cannot regrow on the skin. B. After "bad" P. acnes is removed, the applications of "good" P. acnes should be able to grow and kill invasive bacteria.