The pharynx is lined with a keratinized epithelium to protect against abrasion.
Answer the following statement true (T) or false (F)
False
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On their way toward the liver, veins from the spleen, the lateral border of the stomach, and the pancreas fuse with the inferior mesenteric veins, forming the
A) gastric vein. B) splenic vein. C) superior mesenteric vein. D) cystic vein. E) hepatic vein.
What is the primary fuel source for the brain?
a. neurotransmitters b. electrolytes c. fatty acids d. amino acids e. glucose
Why is arterial blood pressure higher than venous?
A) Arteries have more smooth muscle. B) Arteries need more oxygen. C) Arteries are closer to the heart and its force. D) Arteries have valves that prevent backflow of blood.
The major difference between an embryo and a fetus is that
A. a fetus can survive outside the mother's womb but an embryo cannot. B. a fetus is smaller than an embryo. C. organ systems are developing in an embryo while all organs are present in a fetus. D. a fetus is a male child while an embryo is a female child. E. None of these choices is correct.