Smooth muscle contractions that propel materials and mix them with secretions in the digestive tract are controlled by output of the ________ nerve.
Fill in the blank(s) with the appropriate word(s).
vagus
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The hearts nodal cells have a more negative resting potential than neurons do, because nodal cells lack leak channels for sodium and potassium ions
Indicate whether this statement is true or false.
The molecule that an enzyme affects is its ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is (are) true of the rods?
A. Function in dim light B. Located in the fovea centralis C. See color D. All apply.
Match the structure associated with the eye with the appropriate description.A. The angle where the eyelids joinB. The space between the two eyelidsC. Another name for the eyelidsD. The membrane that covers the inner surface of the eyelidsE. The membrane that covers the anterior sclera of the eyePalpebrae
Fill in the blank(s) with the appropriate word(s).