Explain what is meant by epithelial tissue being avascular but innervated.
What will be an ideal response?
Epithelial tissue contains no blood vessels but is supplied by nerve fibers.
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"Lactational amenorrhea" is a physiological phenomenon that parallels a common cause of infertility due to elevated levels of:
A. prolactin B. oxytocin C. progesterone D. inhibin E. dopamine
In genomic imprinting, the sex of a parent transmitting an allele is important in the phenotype of the offspring.
Answer the following statement true (T) or false (F)
Two substances that are useful for dissolving blood clots are
A. urokinase and streptokinase. B. calcium ions and prothrombin activator. C. thrombus and embolus. D. factor IV and factor XII.
Heliobacter pylori is a species of bacteria that causes stomach ulcers. It does this by burrowing into the mucosal lining of the stomach and degrading it to form a hole. By doing so, what type of innate defense is it overcoming?
A. Inflammation B. Mechanical barriers C. Chemical barriers D. Species resistance