Before B cells secrete antibodies, they differentiate into _________.
A. stem cells
B. antigen-presenting cells
C. plasma cells
D. T cells
E. macrophages
C. plasma cells
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Which nucleus stimulates the muscles to produce the pattern of arm and leg movements associated with walking?
A. Amygdaloid body B. Caudate nucleus C. Putamen D. Globus pallidus E. Claustrum
The CSF moves from the ___________ space through the _________ villi into the _______ sinus
Fill in the blank(s) with correct word
The ______________ is the serious membrane layer that covers the surface of the lungs.
a. pariteal pleura b. visceral pericardium c. visceral peritoneum d. visceral pleura
What event immediately precedes anaphase?
A) Chromosomes cluster at the midline of the cell. B) The mitotic spindle forms. C) The nuclear envelope forms around chromatin. D) DNA replicates.