Which of the following is the major action of the neck musculature?
A) stabilizing the pectoral girdle to allow more precise forelimb movements
B) moving the rib cage
C) positioning the head
D) positioning the spinal column
E) None of the answers are correct.
C) positioning the head
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Implantation of a blastocyst:
A. normally occurs within the oviduct (fallopian tube). B. normally begins around day 21 of the typical menstrual cycle. C. occurs within 24 hours of fertilization of the oocyte. D. takes place at a time in the typical menstrual cycle when estrogen concentration in the blood is higher than progesterone concentration in the blood. E. requires the presence of high concentrations of follicle-stimulating hormone (FSH).
Cerebrospinal fluid enters the blood circulation at the
A) jugular veins. B) central canal. C) arachnoid granulations. D) tentorium cerebelli. E) frontal sinus.
Blood plasma and interstitial fluid are separated from each other; therefore, there is little communication and exchange between these fluids.
Answer the following statement true (T) or false (F)
Hepatic places are separated by large capillary spaces called ________.
A. sinusoids B. hepatocytes C. lobules D. portal systems