Structure L on the skin diagram is the
A) blood vessel.
B) skeletal muscle.
C) ligament.
D) arrector pili.
E) hair papilla.
D) arrector pili.
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Answer the following statements true (T) or false (F)
1. During metaphase, chromosomes align in the center of the cell. 2. A cell in interphase is not in active cell division. 3. During prophase, chromatin becomes chromosomes. 4. During anaphase, the chromosomes move away from the center of the cell. 5. During telophase, spindle fibers attach to each chromatid.
Which of the following is NOT true of beta oxidation?
A) Fatty acids are broken into acetic acid fragments. B) It involves the anabolism of fats. C) It occurs in the mitochondria. D) The carbon in the beta (third) position is oxidized during the process.
Using Figure 21.1, match the following:
1) Main (primary) bronchus.
2) Pharynx.
3) Larynx.
4) Carina of trachea.
5) Trachea.
Type IV ("Delayed") hypersensitivities involve ________.
A) IgA B) IgG C) A cell-mediated response D) IgD E) IgE