Which of the abdominal muscles does not insert on the linea alba?
A. External oblique
B. Transversus abdominis
C. Rectus abdominis
D. Internal oblique
E. No exceptions; all choices insert on the linea alba.
Answer: C
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Specificity is an important characteristic of intercellular communication; which of these best explains how it occurs?
A. The phospholipid composition of the plasma membrane differs among cells. B. Protein receptors are only located on the surface of target cells. C. All cells have the same DNA, so any cell can express protein receptors for a specific chemical. D. Chemical messengers are all proteins, so bind only to receptors that are proteins. E. Protein receptors for chemical messengers are only expressed in specific target cells.
In contrast to secondary spinal cord injury, primary spinal cord injury occurs:
A) from progressive swelling. B) at the moment of impact. C) from penetrating mechanisms. D) within 24 hours of the injury.
The study of anatomy leads to an important concept that structure determines ________.
What will be an ideal response?
A bond that involves the transfer of electrons is called a/an
-covalent bond -hydrogen bond -ionic bond -electronic bond