Which of the following is NOT a part of MALT (mucosa-associated lymphoid tissue)?
A. lymph nodes
B. tonsils
C. appendix
D. Peyer's patches
Ans: A. lymph nodes
Lymph nodes are scattered through the interior of the body. They are not a component of MALT as they are not associated with mucous membranes.
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Cardiac muscle cells and skeletal muscle cells differ in a few ways. Which of the following is not one of them?
A) Cardiac muscle cells are smaller in size. B) Cardiac muscle cells have a single, centered nucleus. C) Cardiac muscle cells branch. D) Skeletal muscle cells lack intercalated discs. E) Cardiac muscle cells lack transverse tubules.
Which of the following statements does NOT describe a step in the synthesis and secretion of T3 and T4?
a) Iodide trapping b) Oxidation of iodide c) Coupling of T1 and T2 d) Synthesis of calcitonin e) Iodination of tyrosine
During development, the ________ system forms most of the veins of the head, neck, and body wall.
Fill in the blank(s) with the appropriate word(s).
A ________ joint allows movement in only one plane.
Fill in the blank(s) with the appropriate word(s).