Which of the following is not a mucosa-associated lymphatic tissue?
A) tonsil
B) thymus
C) Peyer's patch
D) appendix
B) thymus
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Chromatin is found within the cell's ________________________________________
Fill in the blank(s) with correct word
The structure that functions as a diaphragm to control pupil size is the
A. ora serrata. B. iris. C. anterior chamber. D. suspensory ligament. E. cornea.
Amplification during a second-messenger cascade is beneficial because amplification:
A. takes small molecules and makes polymers out of them. B. results in the production of more of the first messenger. C. allows a cell to respond to more different hormones. D. allows small amounts of hormones to produce large responses in target cells.
The cardiac center of the brainstem includes the
A. cardioinhibitory center, from which sympathetic pathways extend. B. cardioacceleratory center, from which sympathetic pathways extend. C. vasomotor center, from which parasympathetic pathways extend. D. cardioacceleratory center, from which parasympathetic pathways extend. E. All of the choices are correct.