AP Psych Ch. 3 Review Questions
- 1.
Which of the following monitor blood and oxygen flow in the brain to identify areas of high activity?
- A.
MRI
- B.
CAT
- C.
FMRI
- D.
ECAT
- E.
EEG
Correct Answer
C. FMRIExplanation
fMRI stands for functional magnetic resonance imaging. It is a technique used to measure brain activity by detecting changes in blood flow and oxygen levels in the brain. This allows researchers to identify areas of high activity in the brain. Unlike MRI, which provides structural images of the brain, fMRI provides functional images that show which areas of the brain are active during specific tasks or stimuli. CAT (CT) scans use X-rays to create detailed images of the brain's structure, while EEG measures electrical activity in the brain. ECAT is not a recognized medical imaging technique.Rate this question:
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- 2.
The neural impulse is fired in the pre-synaptic neuron:
- A.
When the charge of the neuron reaches -70 millivolts
- B.
When a lot of excitatory PSP builds up
- C.
When a lot of inhibitory PSP builds up
- D.
When sodium ions rush in at stimulation and create an action potential
- E.
When the neuron reaches resting potential
Correct Answer
D. When sodium ions rush in at stimulation and create an action potentialExplanation
The firing of a neural impulse, also known as an action potential, occurs when sodium ions rush into the neuron during stimulation. This influx of sodium ions creates a change in the neuron's membrane potential, leading to the generation and propagation of the action potential. This process allows for the transmission of signals between neurons and is a crucial mechanism in neural communication.Rate this question:
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- 3.
Neurotransmitters drift away after being released into the synaptic cleft, and some are inactivated by enzymes. Some are reabsorbed into the pre-synaptic neuron. This process is called:
- A.
Reionize
- B.
Reuptake
- C.
Recycle
- D.
Retransmit
- E.
Reabsorb
Correct Answer
B. ReuptakeExplanation
After being released into the synaptic cleft, neurotransmitters can drift away, become inactivated by enzymes, or be reabsorbed into the pre-synaptic neuron. This process of reabsorption is known as reuptake.Rate this question:
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- 4.
Which of the following is released by motor neurons controlling skeletal muscles?
- A.
Motoroneurotransmitters
- B.
Dopamine
- C.
Serotonin
- D.
GABA
- E.
Acetylcholine
Correct Answer
E. AcetylcholineExplanation
Acetylcholine is released by motor neurons controlling skeletal muscles. It acts as a neurotransmitter, transmitting signals from the motor neurons to the skeletal muscles, causing them to contract. This neurotransmitter plays a crucial role in the voluntary movement of the body.Rate this question:
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- 5.
Used to control many aspects of everyday behavior, the three neurotransmitters categorized as monoamines are:
- A.
Serotonin, dopamine, norepinephrine
- B.
Norepinephrine, acetylcholine, endorphins
- C.
Endorphins, dopamine, GABA
- D.
GABA, serotonin, acetylcholine
- E.
Acetylcholine, GABA, endorphins
Correct Answer
A. Serotonin, dopamine, norepinephrineExplanation
The three neurotransmitters categorized as monoamines are serotonin, dopamine, and norepinephrine. These neurotransmitters play a crucial role in controlling many aspects of everyday behavior. Serotonin is involved in regulating mood, sleep, and appetite. Dopamine is associated with motivation, reward, and pleasure. Norepinephrine is involved in the body's stress response and alertness. Together, these neurotransmitters have a significant impact on our emotions, cognitive functions, and overall behavior.Rate this question:
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- 6.
What is the main difference between the somatic nervous system and the automatic nervous system?
- A.
One is located in the left brain to control, the other in the right brain
- B.
One controls the body including the muscles, blood circulation and digestion, and the other controls the mind and the cognitive process
- C.
One is made of nerves inside the brain, and one is made of nerves that control the skeletal muscles, sensory receptors, blood vessels, and heart
- D.
One is made of nerves connecting to the skeletal muscles and sensory receptors, and the other is made of nerves connecting to the heart, blood vessels, and glands
- E.
One is controlled by the left hemisphere, the other is controlled by the right
Correct Answer
D. One is made of nerves connecting to the skeletal muscles and sensory receptors, and the other is made of nerves connecting to the heart, blood vessels, and glandsExplanation
The main difference between the somatic nervous system and the autonomic nervous system is that the somatic nervous system is made up of nerves connecting to the skeletal muscles and sensory receptors, while the autonomic nervous system is made up of nerves connecting to the heart, blood vessels, and glands. The somatic nervous system controls voluntary movements and processes sensory information, while the autonomic nervous system controls involuntary bodily functions such as heart rate, blood pressure, and digestion.Rate this question:
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- 7.
Which of the following nourishes the brain and provides a protective cushion?
- A.
Cerebrospinal fluid
- B.
Cerebellum fluid
- C.
Afferent protein liquid
- D.
Myelin sheath
- E.
Efferent protein liquid
Correct Answer
A. Cerebrospinal fluidExplanation
Cerebrospinal fluid nourishes the brain and provides a protective cushion. It is a clear, colorless fluid that surrounds the brain and spinal cord, acting as a shock absorber to protect the delicate structures from injury. It also helps in the exchange of nutrients and waste products between the brain and the bloodstream.Rate this question:
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- 8.
The function of the limbic system, located roughly along the border between the cerebral cortex and deeper subcortical areas, is best described as
- A.
The four F's: fighting, feeding, fleeing, mating
- B.
Regulation of emotion, memory, and motivation
- C.
Control of higher order thinking
- D.
Basic instincts necessary for survival and everyday life such as breathing, blinking, and blood circulation
- E.
Conveys all sensory information to the rest of the brain
Correct Answer
B. Regulation of emotion, memory, and motivationExplanation
The limbic system, located between the cerebral cortex and subcortical areas, is responsible for regulating emotions, memory, and motivation. It plays a crucial role in processing and controlling emotions, forming and retrieving memories, and driving motivation and behavior. This system helps in the regulation of emotional responses, the formation and consolidation of memories, and the drive to seek rewards or avoid punishments. It is involved in various functions related to survival, learning, and decision-making.Rate this question:
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- 9.
Which one of the following choices gives a correct example of a poly-genetic trait with the correct reason?
- A.
Skin color; inherited down generations
- B.
A zygote; created by the union of a sperm and egg, both of which have 23 chromosomes each
- C.
A dog's spotted fur; physically displays the dog's genes
- D.
A carrier of a disease; the person received one gene from one parent, and a different one from the other, making the two genes in a specific pair different.
- E.
Eye color; affected by numerous genes
Correct Answer
E. Eye color; affected by numerous genesExplanation
Eye color is a correct example of a poly-genetic trait because it is influenced by numerous genes. Multiple genes contribute to the variation in eye color, including genes involved in the production and distribution of melanin, which is responsible for the color of the iris. Different combinations of these genes can result in a wide range of eye colors, such as blue, green, brown, or hazel. This complexity in inheritance patterns and the involvement of multiple genes make eye color a poly-genetic trait.Rate this question:
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- 10.
Fill in the blanks of the following sentence to make it trueThe sympathetic division is the branch of the _________________ that mobilizes the body's resources for emergencies, and the parasympathetic is another branch that ______ conserves bodily resources.
- A.
Central nervous system; never
- B.
Central nervous system; generally
- C.
Automatic nervous system; generally
- D.
Somatic nervous system; never
- E.
Peripheral nervous system; never
Correct Answer
C. Automatic nervous system; generallyExplanation
The sympathetic division is the branch of the automatic nervous system that mobilizes the body's resources for emergencies, and the parasympathetic is another branch that generally conserves bodily resources.Rate this question:
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Aug 26, 2023Quiz Edited by
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Oct 22, 2010Quiz Created by
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