Which of the following is not a function of the integument?
a.acts as a physical barrier
b.stores calcium in the dermis
c.regulates temperature through vasoconstriction and vasodilation of dermal blood vessels
d.participates in immune defense
b.stores calcium in the dermis
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Embryonic stem cells are derived from the
A. outer cell mass of the morula. B. middle layer of the zygote. C. inner cell mass of the blastocyst. D. trophoblast.
Innervation by both branches of the autonomic nervous system
1.is lateral inhibition. 2.is dual innervation. 3.never occurs in humans. 4.occurs at random because both have the same effect. 5.occurs only in the gastrointestinal system.
The proliferative phase of the uterus is driven by estrogen from the ovaries.
Answer the following statement true (T) or false (F)
In a physiology lab, the students designed an experiment to illustrate how the heart responds to changes in blood pressure
Everyone relaxed and then did a headstand. Which of the following observations are consistent with the change in the function of their hearts? A. increased heart rate B. decreased heart rate C. increased stroke volume D. decreased stroke volume E. both decreased heart rate and increased stroke volume