Gastrulation results in the formation of a(n)
A. morula.
B. embryo.
C. blastocyst.
D. trophoblast.
E. umbilical cord.
B
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The function of the circle of Willis is to equalize blood pressure to the brain and provide an alternate blood source should one of the vessels involved be compromised.
Answer the following statement true (T) or false (F)
Which is not characteristic of cross bridges?
a. they are a component of thin filaments. b. they are comprised of myosin. c. they have an actin binding site. d. they have an ATPase binding site. e. they provide power stroking.
Which of the following does not explain why people on weight-loss diets often lose weight quickly at first, but then more slowly over time?
A. Water is lost quickly but other weight is harder to lose. B. Will power often weakens as the diet progresses. C. As a diet progresses, the body produces more fat even with the same caloric intake. D. The initial weight loss is mostly fat. E. The body lowers its metabolic rate when it loses weight.
The eight front teeth are called ____
a. molars b. cuspids c. incisors d. premolars