Which of the following statements about the brain is FALSE?
a. It weighs about 3 pounds.
b. It contains billions of neurons.
c. It is composed of nerve tissues.
d. It can be subdivided on the basis of structure, but not function.
d
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Certain behaviors may have a genetic component if
a. they are shared by close blood relatives. b. they are not shared by close blood relatives. c. only parents share the trait. d. none of these.
To be held constantly and never touch the ground, which country should an infant be born in?
a. Bali b. West Africa c. Vietnam d. Guatemala
Very young infants who suffer from sleep apnea may be more at risk for SIDS, or sudden infant death syndrome. Why might these infants have difficulty breathing?
a. Many of these infants are obese and therefore their airways are obstructed. b. The brain stem is not yet fully mature. c. The tissue lining in the nasal passageway may be obstructing their airflow. d. No medical explanation has been determined.
Glial cells are important for brain development because they ______.
A. make it possible to sense the world, think, and move the body B. help parts of the brain to communicate with each other C. instruct neurons to form connections with other neurons D. influence synaptic pruning which leads to cognitive efficiency