A muscle whose name has "orbicularis" in it is ________ in appearance.
A. small
B. straight
C. oblique
D. circular
E. very large
Answer: D
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The rectus femoris is one of the four heads of the quadriceps femoris.
Answer the following statement true (T) or false (F)
Another name for the intracellular fluid is
A. cytosol. B. interstitial fluid. C. intercellular matrix. D. cytoplasm. E. cisternae.
Answer the following statements true (T) or false (F)
1. All orbitals of an atom can hold two electrons. 2. All energy levels of an atom can hold four orbitals. 3. All energy levels can hold eight electrons. 4. The first energy level of an atom can hold only two orbitals. 5. The first energy level of an atom is closest to the nucleus and is the lowest energy level.
Which of the following is not true of veins?
a. Blood drains into them from venules. b. They carry blood back to the heart. c. They have a thicker tunica media than do arteries. d. Their innermost layer is called the tunica intima.