Nerves of the autonomic nervous system control skeletal muscle responses
Indicate whether the statement is true or false
F
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The interstitial cells in the testes
A. undergo mitosis to produce primary spermatocytes. B. support and protect the developing sperm cells. C. secrete testosterone. D. convert fructose to glucose to nourish the sperm. E. form the lining of the seminiferous tubules.
A membranous region located between certain cranial bones in the skull of a vertebrate fetus or infant is called a __________
Fill in the blank(s) with the appropriate word(s)
Polypeptide and glycoprotein hormones can be taken orally.
Answer the following statement true (T) or false (F)
Arteries that supply the intestines arise from the aorta. Veins that drain the intestines ________
A) empty into the hepatic veins B) enter the inferior vena cava directly C) ultimately drain into the hepatic portal vein D) join to form the common intestinal vein that enters the vena cava