Quiz 2: The Nervous System

Which of the following is an accurate statement regarding neurons and glia cells? A) Neurons control behavior; glia cells support the function of neurons B) Glia cells control behavior; neurons support the function of glia cells C) Neurons are restricted to the brain; glia cells are restricted to the periphery D) Glia cells are restricted to the brain; neurons are restricted to the periphery

What is the function of neuronal dendrites? A) They produce the myelin sheath. B) They send neurotransmitters to other neurons. C) They contain the neuron's genetic material. D) They receive information from other neurons.

What is the function of a neuron's axon? A) It produces the myelin sheath. B) It sends neurotransmitters to other neurons. C) It contains the neuron's genetic materials. D) It receives information from other neurons.

The small space between the axon terminal and postsynaptic terminal is called the ____. A) soma C) nucleus B) synaptic cleft D) receptor

Dr. Mitchum is exploring the role of sensory neurons (which convey sensory information to the central nervous system) in detecting incremental changes in temperature. Which type of neuron is Dr. Mitchum studying? A) afferent neuron C) intraneuron B) efferent neuron D) interneuron

Dr. Goulard is investigating mechanisms of preserving the function of motor neurons (which convey motor information from the central nervous system) in amyotrophic lateral sclerosis. Which type of neuron is Dr. Goulard studying? A) afferent neuron C) intraneuron B) efferent neuron D) interneuron

Which cell type produces a material called myelin? A) neurons C) astrocytes B) oligodendrocytes D) microglial cells

Which cell type plays a role in forming the blood-brain barrier? A) neurons C) astrocytes B) oligodendrocytes D) microglial cells

Which cell type removes cellular waste? A) neurons C) astrocytes B) oligodendrocytes D) microglial cells

"Examine the anterior portion of the brain." Where do you tell your lab partner to look? A) Toward the front of the brain C) Toward the midline of the brain B) Toward the rear of the brain D) Toward the side of the brain

"Examine the dorsal portion of the brain." Where do you tell your lab partner to look? A) Toward the top of the brain C) Toward the bottom of the brain B) Toward the rear of the brain D) Toward the side of the brain

"Examine the posterior portion of the brain." Where do you tell your lab partner to look? A) Toward the front of the brain C) Toward the bottom of the brain B) Toward the rear of the brain D) Toward the side of the brain

"Examine the lateral portion of the brain." Where do you tell your lab partner to look? A) Toward the back of the brain C) Toward the midline of the brain B) Toward the bottom of the brain D) Toward the sides of the brain

A plane that shows brain structures as seen from the side is referred to as a ____. A) coronal plane C) frontal plane B) sagittal plane D) horizontal plane

A plane that shows brain structures as seen from the front (or frontal plane) is referred to as a ____. A) coronal plane C) transverse plane B) sagittal plane D) horizontal plane

A plane that shows brain structures as seen from above is referred to as a ____. A) coronal plane C) frontal plane B) sagittal plane D) horizontal plane

The nervous system consists of two systems: ____. A) the peripheral nervous system and the frontal nervous system B) the tangential nervous system and the frontal nervous system C) the peripheral nervous system and the central nervous system D) the tangential nervous system and the central nervous system

Which nervous system delivers voluntary motor signals from the central nervous system to muscles throughout the body and conveys sensory information from the body to the central nervous system? A) sympathetic nervous system C) parasympathetic nervous system B) somatic nervous system D) autonomic nervous system

Which nervous system prepares the body for rigorous activity by increasing heartbeat, inhibiting digestion, and opening airways? A) sympathetic nervous system C) parasympathetic nervous system B) somatic nervous system D) central nervous system

After encountering a ferocious dog while walking back from your psychopharmacology lecture, your heart races. After the dog turns in the other direction you began to relax and your heart beat slows down. What nervous system is primarily responsible for initiating your more relaxed state? A) sympathetic nervous system C) parasympathetic nervous system B) somatic nervous system D) central nervous system

Which structure is part of the forebrain? A) medulla C) thalamus B) cerebellum D) pons

The autonomic nervous system is controlled by the ____. A) medulla C) thalamus B) limbic system D) basal ganglia

Narcotics and central nervous system depressants suppress medullary functions. Why might these drugs be fatal at high doses? A) May suppress breathing C) May increase risk of stroke B) May cause rapid heart rate D) May cause hyperemia

It is 5 PM and Jane is dreaming of leaving work so that she can sink her teeth into a juicy hamburger. Which of Jane's brain structures is most contributing to her feeling of hunger? A) basal ganglia C) medulla B) cerebellum D) hypothalamus

Tania sees a dark shadow outside her window and feels frightened. What brain structure contributes most to her feeling of fear? A) basal ganglia C) limbic system B) pons D) hypothalamus

The nucleus accumbens is also called the brain's ____ center. A) reward C) motor control B) command D) perception

Which lobe of the cerebral cortex processes auditory information and supports language comprehension and production? A) occipital lobe C) parietal lobe B) temporal lobe D) frontal lobe

Which lobe of the cerebral cortex is primarily responsible for processing visual information? A) occipital lobe C) parietal lobe B) temporal lobe D) frontal lobe

Which lobe of the cerebral cortex processes touch information from the body? A) occipital lobe C) parietal lobe B) temporal lobe D) frontal lobe

Which lobe of the cerebral cortex supports decision making and movement? A) occipital lobe C) parietal lobe B) temporal lobe D) frontal lobe

Which tract crosses from one hemisphere of the brain to the opposite side of the body, sending motor information to the limbs, hands, and feet? A) medial corticospinal tract C) dorsal spinocerebellar tract B) lateral corticospinal tract D) cuneocerebellar tract

Which brain structures act to stabilize voluntary movements? A) hippocampus, thalamus, and amygdala B) hippocampus, thalamus, and substantia nigra C) basal ganglia, thalamus, and substantia nigra D) basal ganglia, thalamus, and amygdala

The first drugs to treat schizophrenia, called antipsychotic drugs, caused Parkinson-like symptoms. Why? A) Antipsychotic drugs disrupt neurons in the substantia nigra. B) Antipsychotic drugs damage neurons in the thalamus. C) Antipsychotic drugs cause demyelination of the corticospinal tracts. D) Antipsychotic drugs increase the number of dopamine receptors.

Megan is walking to the student center, lost in deep thought, when her friend Roman runs up behind her, tapping her on the shoulder. Megan, startled by Roman, jumps and gasps for air. Which brain structure is responsible for Megan's startle reflex? A) pons C) basal ganglia B) cerebellum D) hippocampus

Working memory is part of your ____. A) short-term memory C) reference memory B) sensory memory D) long-term memory

Second-grade teacher Ms. Frascella calls upon her star pupil, Jeremy, to recite the capitals of all 50 states. Which type of memory will Jeremy use to recall this information? A) short-term memory C) working memory B) sensory memory D) long-term memory

Mabel was recently diagnosed with Alzheimer's disease. She is beginning to show significant impairment of her long-term memory. Damage to which brain structure likely caused this impairment? A) amygdala C) hippocampus B) cerebellum D) thalamus

After a recent bicycle accident, 11 year old Todd cannot do things that were once routine, such as such as riding a bike. Damage to which of Todd's brain structure disrupted Todd's procedural memory required for riding his bike? A) basal ganglia C) pons B) amygdala D) hypothalamus

Activity within which brain structures support arousal in the cerebral cortex, thus indirectly aiding in memory formation? A) dentate gyrus C) limbic system B) reticular formation D) pyramidal system

Ted is studying for his neuropsychology exam. How is cerebral blood flow to Ted's prefrontal cortex likely to respond to his studying? A) Blood flow will remain constant. B) Blood flow will decrease. C) Blood flow will increase. D) Blood flow will show variable changes.

What is the role of nitric oxide in the brain? A) increases blood flow and increases oxygen levels B) decreases blood flow, but increases oxygen levels C) increases blood flow, but decreases oxygen levels D) decreases blood flow and decreases oxygen levels

What term is used to describe a decrease in cerebral blood flow that may potentially cause cell death if severe or persistent enough? A) infarct C) ischemia B) excitotoxicity D) hyperemia

Peter's physician, Dr. Ma, is concerned that he suffered a stroke after he complains of loss of feeling in his left arm. Which diagnostic test will help Dr. Ma visualize Peter's circulatory system to determine if he suffered a stroke? A) CAT scan C) fMRI B) PET scan D) angiogram

The brain is supplied with blood through two major arteries: ____. A) the dorsal scapular artery and the vertebral artery B) the dorsal scapular artery and the carotid artery C) the carotid artery and the femoral artery D) the carotid artery and the vertebral artery

The brain contains cerebrospinal fluid-filled cavities called ____. A) periaqueductal gray areas C) ventricles B) arterioles D) meninges

Which is a function of cerebrospinal fluid? A) It transports oxygen. C) It serves as a protective cushion. B) It produces immune cells. D) It clears myelin.

What is the function of the blood-brain barrier? A) It provides protective cushion. B) It allows substances to easily access the brain. C) It prevents harmful substances from entering brain. D) It converts carbon dioxide into oxygen.

Dr. Pearson wants to design a drug that easily passes through the blood-brain barrier. As an expert in psychopharmacology, you suggest that Dr. Pearson ensure that the chemical structure that he designs is small, as well as ____. A) lipid soluble and uncharged C) lipid soluble and charged B) water soluble and uncharged D) water soluble and charged

Drug X passes through the blood-brain barrier via active transport. What does this mean? A) Drug X diffuses through the blood-brain barrier. B) Drug X uses osmosis to pass through the blood-brain barrier. C) Drug X directly attaches to neurons to pass through the blood-brain barrier. D) Drug X uses channels to pass through the blood-brain barrier.

The primary features of the central nervous system are produced during the ___ trimester of pregnancy. A) first C) third B) second D) fourth

Expecting mom Giselle reads about her pregnancy on the website Mommy-and-Me. She learns that her unborn baby developed noticeable ridges and grooves (termed gyri and sulci) within the cerebral cortex. During which gestational period do these gyri and sulci first become most apparent? A) 12 to 18 weeks into a pregnancy C) 24 to 30 weeks into a pregnancy B) 18 to 24 weeks into a pregnancy D) 30 to 36 weeks into a pregnancy

Which is the correct order of events during brain cell development? i. synaptic rearrangement Ii) differentiation Iii) migration Iv) synaptogenesis V) apoptosis Vi) proliferation A) ii, vi, iii, v, i, iv C) ii, iii, vi, iv, i, v B) vi, iii, ii, iv, v, i D) vi, ii, iii, iv, i, v

The blueprints for a neuron and its functions reside within the ____. A) axon terminals C) mitochondria B) dendrites D) nucleus

How many chromosomes does a child inherit from each parent? A) 16 C) 43 B) 23 D) 46

Each chromosome contains a strand of ____. A) ribonucleic acid C) transcription factors B) deoxyribonucleic acid D) ribosomes

Everyone has genes for eye color, but variations in the coding sequence of these genes allow for a variety of eye colors in a population. The term to best describe this variation in coding sequences is ____. A) independent assortment C) heritability B) allelic segregation D) polymorphism

The activation of genes leads to the synthesis and release of genetic information, a process referred to as gene ____. A) transcription C) transference B) encoding D) translation

The type of RNA used to trigger protein synthesis is called ____ RNA. A) transfer C) ribosomal B) nucleic D) messenger

Dr. Leighton is performing a literature search to learn more about a process termed gliosis. What is she likely to find out? A) Astrocytes facilitate axonal regrowth after injury. B) Astrocytes hinder axonal regrowth after injury. C) Astrocytes produce new myelin for injured axons. D) Astrocytes strip injured axons of old myelin.

Dr. Ambroise is developing a drug to help promote axonal regeneration following brain injury. What might be an effective mechanism of action for Dr. Ambroise's drug? A) Inhibit BDNF production. C) Break down proteoglycans. B) Block uptake of neurotrophin-3. D) Increase production of semaphorin 3.

Draw a diagram of a neuron, identifying its major structures. Write a brief description of the role of each structure in facilitating neuronal communication. Include in your answer a discussion of the synapse and how it bridges interneuronal communication.

Describe what is meant by the term glial scar. What roadblocks to recovery from traumatic brain injury does the glial scar present? In addition, discuss current experimental therapeutic strategies for combating promoting axonal regeneration after brain injury.