The movement of H2O across a plasma membrane
A. is called osmosis and requires cellular energy.
B. is called osmosis.
C. requires cellular energy.
D. is called facilitated filtration.
Answer: B
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The muscle attachment to the more movable bone is called the:
a. origin b. insertion c. tendon d. bursae
This is a first pregnancy for a 22-year-old woman. She is in her 16th week of pregnancy. She is scheduled for an amniocentesis and expresses concern that the "baby will be stuck with the needle." What should the nurse say to the woman?
What will be an ideal response
______ allow for the passage of oxygen, nutrients, and small substances to and from osteocytes trapped within lacunae.
Fill in the blank(s) with correct word.
Which of the following statements accurately describe events that occur as a result of a local potential reaching threshold?
A. Activation gates of Na+ ion channels begin to close. B. Inactivation gates of Na+ ion channels begin to open. C. A positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open. D. K+ ion channels begin to close. E. Inactivation gates of Na+ ion channels begin to open and a positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open.