Exam 28: Nervous Systems

Once an action potential is triggered, there is a

Which of the following statements about Parkinson's disease is true?

Inhibitory neurotransmitters are most like what part of an automobile?

You start to fall but then catch yourself, regaining your balance. Which of the following brain regions is responsible for the rapid coordination of muscle activity that kept you from falling?

During REM sleep, an EEG shows

After reading the paragraphs below, answer the questions that follow. You recently sprayed your apartment with insecticide to remove an infestation of cockroaches. In your kitchen, you noticed some roaches lying on their backs twitching furiously before they died. This aroused your curiosity, so you decided to investigate exactly how the insecticide works on the nervous system. In your research, you discover that the insecticide you used contains a permanent acetylcholinesterase inhibitor. Acetylcholine is a neurotransmitter that stimulates skeletal muscle to contract. Acetylcholinesterase removes acetylcholine from the synapse after the signal is received. Exposure to high pesticide concentrations has a similar effect on humans, which can also be caused by exposure to the nerve gas Sarin and other chemical agents. -Since pesticides affect humans in a manner similar to that of roaches, it would be valid to conclude that

The gap between the transmitting and receiving neurons in a chemical synapse is known as the

Similar to vertebrates, some invertebrate species such as earthworms and some crustaceans have a layer of insulation used for increasing the speed of electrical impulse transmission. This commonly shared physical feature is called the

The functional unit of the nervous system is the

Which of the following brain regions controls the secretion of pituitary hormones and exerts direct control over many other aspects of homeostasis?