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Psych Ch 2
Terms in this set (56)
The _ system is the body's electrochemical communication circuitry.
A single cubic centimeter of the human brain consists of well over _ nerve cells.
Which of the following characteristics of the nervous system best reflects the brain's ability to coordinate information from all five senses?
brain's special capacity for modification and change
The term plasticity refers to the _
Plasticity best reflects which of the following characteristics of the nervous system?
You are listening to a lecture. Then the bell rings in the hallway. In order to hear this stimulus, _ neurons must carry electrochemical messages from your ears to your brain.
The lecture you were listening to is over. The bell that rang in the hall signaled the end of class. You get up out of your seat, pick up your things, and walk out the classroom door. Which kind of nerves sent the signals from your brain to your muscles to initiate your physical movements?
Information from the brain and spinal cord to the muscles is sent through _, thus enabling the body to move.
Your brain has instructed your body muscles to move so that you avoid burning your hand on a hot stove. Which type of nerves carried the information from your brain to your muscles so that you could avoid getting burned?
Joshua is reading a novel. The input from his eyes is transmitted to his brain and then passed through many _ that translate the character on the page to integrate sensory input and motor output.
Central nervous system
The brain and spinal cord make up the _
The _ nervous system connects the brain and spinal cord to the rest of the body.
Peripheral nervous system
The somatic nervous system and autonomic nervous system are components of the _
Tell muscles what to do
The function of the somatic nervous system is to _.
autonomic nervous system
The function of the _ is to take messages to and from the body's internal organs, monitoring such processes as breathing, heart rate, and digestion.
Heart rate, breathing, and digestion
Which of the following essential body functions are under the control of the autonomic nervous system?
Autonomic nervous system
The sympathetic nervous system and parasympathetic nervous system are components of the _.
Which of the following is one of the functions of the sympathetic nervous system?
You are walking to school when you encounter a strange barking dog. You start sweating and contemplate whether you should run away. Which nervous system is responsible for this "fight-or-flight" reaction?
Just before you went on a job interview your heart was pounding like crazy. Your experienced a shortness of breath and felt sick to your stomach. These symptoms were most likely produced by your _ nervous system.
Which division of the peripheral nervous system is responsible for producing physiological symptoms (such as increased heart rate and butterflies in the stomach) under conditions of stress?
After finishing a psychology test, you try to relax by engaging in some meditation techniques. Doing these exercises should increase the response of the _ nervous system, which results in a slower heart and respiration rate and less muscular tension.
Corticosteroids are _
_ stress is the momentary stress that occurs in response to life experiences.
Which of the following types of cells in the nervous system handle the information-processing function?
_ provide support, nutritional benefits, and other functions in the nervous system.
The cell body contains the _, which directs the manufacture of substances that a neuron needs for growth and maintenance.
The part of the neuron that contains the nucleus, which directs the manufacture of substances that a neuron needs for growth and maintenance, is called the _.
Where is the nucleus of a neuron located?
the branch-like part of the neuron that is responsible for receiving information from other neurons
Dendrites are _.
The part of the neuron that is responsible for sending or carrying information away from cell body toward other cells
The axon is _.
The myelin sheath
_ is a layer of fat cells that insulates most axons and speeds up the transmission of nerve impulses.
Speed up the transmission of nerve impulses
Which of the following is a function of the myelin sheath?
stable, negative charge of an inactive neuron
Resting potential is the _.
The membrane of the resting neuron is said to be _.
There is a negative charge on the inside of the cell membrane and a positive charge on the outside.
When a neuron is at its resting state, what is the status of the charges on each side of the cell membrane?
The brief wave of positive electrical charge that sweeps down the axon is _.
When a neuron sends an action potential it is commonly said to be "___."
Once the electrical impulse reaches a certain level of intensity (its threshold), it fires and moves all the way down the axon without losing any intensity
According to all-or-nothing principle, _
Which of the following refer to tiny spaces between the neurons?
_ are chemical substances that are stored in very tiny sacs within the terminal buttons and involved in transmitting information across a synaptic gap to the next neuron.
Action of muscles, learning, and memory
Acetylcholine is a neurotransmitter that plays an important role in _.
Your relative is experiencing memory loss related to Alzheimer's disease. Research suggests that decline in memory is due to an _ deficiency in this individual's brain.
_ inhibits the firing of neurons in the CNS, but it excites the heart muscle, intestines, and urogenital tract.
Low levels of dopamine-Parkinson disease
Which of the following pairs are correctly matched?
Depression is associated with low levels of which neurotransmitter?
Amy, a 30 year old teacher, who is in shock after a car wreck.
Which of the following indicates elevated levels of endorphins?
Mother who has just given birth
A powerful surge of oxytocin is released in a _.
An _ is a drug that mimics or increases a neurotransmitter's effects whereas an _ is a drug that blocks a neurotransmitter's effect.
Mark Johnson, a doctor in Dallas, prescribed an antidepressant drug Prozac to his patient, Ted. Prozac works by increasing brain levels of serotonin. This means that Prozac is considered _.
Michael has schizophrenia. His doctor prescribed a new drug that blocks or interferes with the activity of dopamine. Michael's doctor is using _ treat his disorder.
Neuroscientists who surgically remove, destroy, or eliminate the brain tissue of laboratory animals are using which of he following techniques for studying the brain?
Electrical activity in the brain can be captured by placing multiple electrodes on the scalp and then measuring the underlying electrical activity. This method of studying the brain's activity is called an _.
Computerized axial tomography (CAT)
Arnold Becker, a doctor in Seattle, needs information about the location and extent of damage involving stroke and loss of memory of his patient, Judith. Which of the following techniques will he most likely use to diagnose Judith's condition?
Positron Emission Tomography (PET)
Stern Tyler, a neuroscientist who is collecting data for a new research study, uses techniques for monitoring the amount of glucose in various areas of the brain. Which of the following methods is Stern Tyler using in this study?
involves creating a magnetic field around a person's body and using radio waves to construct images of a person's tissues and biochemical activities
Magnetic Resonance imaging (MRI) is a technique that _
This set is often in folders with...
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