What anatomical feature enables lymph nodes to filter lymphatic fluid?
A. Medullary cords in the medulla
B. Subcapsular sinus
C. An elongated bean shape
D. Afferent lymphatic vessels
E. The presence of lymphatic nodules with B cells
Answer: D
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Which statement about enzymes is false?
A) Enzymes raise the activation energy needed to start a reaction. B) Enzymes are composed mostly of protein. C) Enzymes are organic catalysts. D) Enzymes may be damaged by high temperature.
Muscles that help to maintain posture are best described as synergists
Indicate whether the statement is true or false
Exposure to environmental tobacco smoke (ETS) causes approximately _______ nonsmokers to die of heart diseases annually.
Fill in the blank(s) with the appropriate word(s).
Neurons in the skin that are responsible for detecting pain are ________.
A. bipolar B. apolar C. pseudo-unipolar D. multipolar