Which of the following is NOT a secondary lymphatic organ?
A. spleen
B. lymph node
C. lymphatic nodule
D. thymus gland
D
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Insect flight muscles contract at frequencies much higher than the stimulation rates they receive from the nerves that innervate them. For this reason, they are termed __________ flight muscles
Fill in the blank with the correct word.
Which of the following statements is true regarding objects projected from the same level as they land?
A. time up and time down are equal B. angle of decent is equal to angle of takeoff C. both A & B D. all of the above
The thin layer of connective tissue in contact with the intestinal epithelium is the:
a. mucosa b. muscularis mucosa c. submucosa d. lamina propria
Oligodendrocytes are specialized to conduct electrical impulses to neurons
Indicate whether the statement is true or false