ap psych chapter 2

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The medulla oblongata is a part of the

brain stem

Which of the following best describes a major role of the thalamus?

It relays most sensory signals to the cortex.

An adult with a healthy sleep cycle is most likely to enter REM sleep

after cycling through the NREM sleep stages

what event causes the release of chemicals into the synaptic gap?

an action potential reaching the axon terminal

The fatty casing that helps speed up the neural transmissions of a neuron is called the

myelin sheath

Eating, drinking, sexual behavior, sleeping, and temperature control are most strongly influenced by the ________.

hypothalamus

The right hemisphere is most associated with

nonverbal and perception based tasks

which of the following is a common misconception about the brain?

older brains can't make new cells

Darla was in an automobile accident that resulted in an injury to her brain. Her sense of touch has been affected. Which part of the brain is the most likely site of the damage?

pariental lobes

Which hormone is released when a person is under stress?

Cortisol

Damage to what area of the brain would result in an inability to comprehend language?

Wernicke's area

Sara has been experiencing a serious memory problem. An interdisciplinary team has ruled out a range of causes and believes that a neurotransmitter is involved. Which neurotransmitter is most likely involved in this problem?

acetylcholine

The hormone released by the pineal gland that reduces body temperature and prepares you for sleep is _________________

melatonin

Which endocrine gland regulates your body's response to stress?

adrenal gland

inhibitory synapse

neurotransmitter that turns cell off

The phenomenon of declining physiological effects of taking a drug after sustained use is referred to as

tolerance

what role do neurotransmitters play?

transmit a message

which method would a researcher select if he or she wanted to determine of his or her patient's right hemisphere was the same size of his or her left hemisphere

CT scan

Madeline has previously been diagnosed with major depressive disorder. She has an identical twin sister, Josephine, and a nonidentical sister, Abigail. Neither of Madeline's sisters have previously been diagnosed with major depressive disorder. Which of the following statements is true of Madeline's sisters?

Josephine is more likely to be diagnosed with major depressive disorder than Abigail in response to a stressful or traumatic event.

The idea that there is a part of the mind that is not directly accessible to awareness but still drives a person's thinking and behavior is most directly attributable to

Sigmund Freud

Which of the following describes what happens when a neuron sends a signal?

The neuron goes from being negatively charged to briefly being positively charged, and finally returns to being negatively charged again. The magnitude of the negative charge is fixed regardless of the strength of the input signal it receives.

If a body does not have enough potassium, how might that affect neuronal firing?

The neurons will struggle to fire because there will not be enough positively charged ions to trigger the firing of the neuron.

At a synapse, neurotransmitters released by the sending neuron do which of the following?

They bind to receptors at the receiving neuron, which opens ion channels.

What effect do agonists have?

They increase the likelihood that a postsynaptic neuron will fire.

A neuron releases neurotransmitters into the synaptic gap that reduce the frequency of action potential in the neighboring cell. The neuron most likely released is_______________

an inhibitor neurotransmitter

The psychodynamic theory of dreaming would postulate that

dreams fulfill unconscious wishes

what type of signal is used to relay a message from one end of neuron to the other end?

electrical

Which of the following responses would occur if your sympathetic nervous system has been activated?

increased heart rate

Carl Wernicke discovered the region of the brain that is responsible for

language comprehension

If Darren's brain is like that of most people, then language will be handled by his ________.

left hemisphere

the function of the ________________ is to carry information to and from all parts of the body.

nervous system

A specialized cell that makes up the nervous system that receives and sends messages within that system is called a ___________

neuron

The brain's ability to modify its structure or function is known as

neuroplasticity

A chemical found in synaptic vesicles which, when released, has an effect on the next cell called a ____________

neurotransmitter

excitatory synapse

neurotransmitters turn cell on

The parietal lobe is most involved in

processing sensory information

What do neurons do?

receive and send messages in the nervous system

which of the following is responsible for the ability to selectively attend to certain kinds of information in one's surroundings and become alert to change in information?

reticular formation

The central nervous system is made of which two components

the brain and spinal cord

what did Santiago Ramon y Cajal theorize?

the nervous system was made up of individual cells.

After a brain operation, a laboratory rat no longer displays any fear when placed into a cage with a snake. Which part of the rat's brain was most likely damaged during the operation?

amygdala

Antagonists function by

blocking receptors to prevent other neurotransmitters from binding to the neural receptors

Which part of the nervous system takes the information received from the senses, makes sense out of it, make decisions, and sends commands out of the muscles and the rest of the body?

brain

what a professional baseball player swings a bat and hits a home run, he or she is relying on his or her ________________ to coordinate the practiced movements of his or her body

cerebellum

Johnny often hits his brother even though his brother does not do anything to antagonize him. Johnny's aggression is most likely due to a combination of

his genetic makeup, the environment he grew up in, and the fact that aggression can be evolutionarily adaptive

what system is called the fight or flight

sympathetic division

A drug that is used to treat seizures functions by preventing inhibitory neurotransmitters from returning to the presynaptic neuron. This slows the rate of neurons firing by increasing the amount of the inhibitory neurotransmitter in the synapse. The drug is most likely to be classified as a

GABA reuptake inhibitor (GRI)

small metal disks are pasted onto Miranda's scalp, and they are connected by wire to a machine that translates the electric energy from her brain into wavy lines on a moving piece of paper. From this description, it is evident that Miranda's brain is being studied through the use of_______________

an electroencephalograph

Involuntary muscles are controlled by the _________________ nervous system

autonomic

A neuron sends a signal along its

axon

The hormone most associated with the fight or flight response is

epinephrine

A person whose body is not producing enough testosterone is most likely to exhibit

fatigue

Ruth and Debbie are identical twins who were raised by the same family. Vince and Frankie are identical twins who were separated at birth and raised by different families. According to research on the heritability of personality traits, Ruth's and Debbie's personalities are statistically

likely to be as similar and dissimilar to one another as are Vince's and Frankie's personalities

if a person damages her or her occidental nerve lobes, which would be the most likely problem her or she would report to his or her doctor?

problems with his or her vision

Waking up frequently, loud snoring, silent pauses in breathing, and sleepiness during the day are symptoms of

sleep apnea

every deliberate action you make, such as pedaling a bike, walking, scratching, or smelling a flower, involves neurons in the __________ nervous system

somatic

Michael Gazzaniga is best known for

studying split-brain patients

the aspect of attention individuals with ADHD do have a problem with what?

vigilance


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