The most common types of cancer in America include colon cancer, skin cancer, breast cancer, cervical cancer, and prostate cancer. What do all of these cancers have in common and why are they so prevalent in our society?
What will be an ideal response?
All of these structures have epithelial tissue that is reproducing at a rapid rate. Because they undergo mitosis so often if a failure of apoptosis occurs or if a mutation alters the DNA of one of the cells, the new copies of the existing cells will cause an increase in the cancerous cells at a much faster rate than in other tissues that divide at a much slower rate.
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Milk production is stimulated by ________, milk ejection is stimulated by ________
A) somatomedin; MSH B) prolactin; oxytocin C) oxytocin; prolactin D) MSH; somatomedin E) LH; FSH
Which is not correct regarding the innervation of the kidney?
A. Parasympathetic innervation is from the vagus nerve. B. The kidney is served by the renal plexus. C. Sympathetic innervation is from segments T10-T12 of the spinal cord. D. Sympathetic stimulation causes vasoconstriction of the renal blood vessels. E. Parasympathetic stimulation decreases the rate of filtrate formation.
Oxidation reduction reactions ________
A) occur via the gain of hydrogen or the loss of oxygen B) utilize hydrogenases C) are rarely coupled together D) may involve the loss of hydrogen and electrons
Which uterine layer is composed of a simple columnar epithelium containing tubular glands?
A. Myometrium B. Perimetrium C. Endometrium D. Cervix E. Fimbrium