Failure of the palatine processes of the maxilla to fuse properly during development results in a ________.
A. cleft palate
B. cleft chin
C. cleft lip
D. clogged sinus
E. deviated septum
Answer: A
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Which of the following structures is an exception to the general principle surrounding blood vessel oxygenation levels?
A. Pulmonary artery B. Aorta C. Pulmonary veins D. Both a and c
The endoderm forms
A) muscle. B) blood. C) neural tissue. D) skin. E) the urinary bladder.
________ promote(s) protein synthesis, increase(s) the release of fat from adipose tissue, and stimulate(s) the conversion of glycogen to glucose.
A. Thyroid hormones B. Cortisol C. Growth hormone D. Epinephrine and norepinephrine
Which of the following is NOT true of a steroid hormone?
A. The hormone-receptor complex binds to DNA. B. It activates a second messenger to cause cellular changes. C. It diffuses into the cell and binds to its receptor protein. D. Intracellular enzymes, made from the DNA, direct cellular changes.