When shear stress increases, endothelial cells release nitric oxide, which diffuses to the underlying smooth muscle and promotes vasodilation
a. True
b. False
Indicate whether the statement is true or false
True
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Answer the following statement(s) true (T) or false (F)
1. The embryonic stage extends from day 16 through the end of week 8. 2. The chorion forms the fetal part of the placenta. 3. The placenta begins to form after week 8. 4. Teratogens usually do not cause congenital anomalies.
The medical term that means "the opposite of osteosclerosis" is:
A) osteogenesis B) osteorrhapy C) osteomalacia D) osteoarthritis
The activation-synthesis theory provides a physiological explanation for:
A) dreaming B) sleep apnea C) narcolepsy D) hypnosis
Mitochondria
A. have inner folds called cristae. B. are the cell's power plants. C. have inner and outer membranes. D. contains DNA. E. All of the choices are correct.