Which of the following is NOT a secondary lymphatic duct?
a) spleen
b) lymphatic nodule
c) lymph node
d) red bone marrow
Answer: d) red bone marrow
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The structures that help prevent toxins in the blood from reaching the brain make up the __________ __________ barrier.
Fill in the blank(s) with the appropriate word(s).
The secretory phase of the uterine cycle coincides with
A. the luteal phase of the ovarian cycle. B. proliferation. C. ovulation. D. the follicular phase of the ovarian cycle. E. menstruation.
Which of the following joints is located between the spinal vertebrae?
A) pivot B) symphysis C) gomphosis D) hinge E) synchondrosis
Which of the following structures contains central pattern generators that help regulate the breathing rhythm?
A. Pons B. Forebrain C. Cerebellum D. Limbic system E. Thalamus