question

A tumor located in the primary somatosensory area would impact which of the following functions? the ability to feel a rough object the ability to swallow the ability to smell the ability to determine images all of these

answer

the ability to feel a rough object

question

Depolarization of the neuron occurs when... the potassium gates open and potassium moves outside the cell. the sodium-potassium pump moves sodium inside the cell. sodium gates open and sodium moves inside the cell. the sodium-potassium pumps moves potassium inside the cell. water moves to the outside of the cell and chloride ions follow.

answer

sodium gates open and sodium moves inside the cell.

question

Dopamine plays a central role in the working of the brain's built-in reward circuit. True or False.

answer

True

question

Heavy use of which drug can lead to hallucinations, anxiety, depression, paranoia, and psychotic symptoms? marijuana ecstasy heroin cocaine methamphetamine

answer

marijuana

question

How does caffeine work? increases the amount of neurotransmitter at a synapse interferes with or decreases the action of a neurotransmitter replace or mimic a neurotransmitter replace or mimic a neuromodulator promote the action of a neurotransmitter

answer

interferes with or decreases the action of a neurotransmitter

question

How is alcohol classified? stimulant depressant psychoactive inhibitor none of these

answer

depressant

question

In what way are the somatic motor pathway and the parasympathetic autonomic motor pathway similar? Both innervate glands and organs. Both innervate the skeletal muscles. Both utilize two neurons per message. Both use acetylcholine as a neurotransmitter. Both are voluntary.

answer

Both use acetylcholine as a neurotransmitter.

question

In which way are the sympathetic and parasympathetic divisions of the autonomic system similar? Both utilize two neurons per message. In both, the preganglionic neuron is shorter than the postganglionic neuron. Both use norepinephrine as their neurotransmitter. Both arise from the sacral spinal nerves. Both are associated with the relaxed state (rest-and-digest).

answer

Both utilize two neurons per message.

question

Long term use of heroin results in which set of symptoms? -weight gain, poor cognitive performance, irritability - cardiac and/or respiratory arrest, sudden death - apathy, euphoria, hallucinations -addiction, hepatitis, HIV/AIDS, various bacterial infections - anxiety, jitters, insomnia, headaches

answer

addiction, hepatitis, HIV/AIDS, various bacterial infections

question

Place the events in the transmission of an action potential in the correct order. 1. An action potential begins in the receiving neuron. 2. Neurotransmitters are released into the synaptic cleft. 3. An action potential arrives at an axon terminal. 4. Calcium ions enter the axon terminal. 5. Sodium ions diffuse into the receiving neuron. 6. Synaptic vesicles fuse with the plasma membrane. 7. Neurotransmitter molecules bind to the membrane of the receiving neuron. 1,2,6,7,4,3,5 3,5,6,2,7,4,1 3,4,6,2,7,5,1 2,3,6,7,4,5,1 7,6,5,3,4,2,1

answer

3,4,6,2,7,5,1

question

Place the following steps in the correct order for a reflex arc. 1. Sensory neurons pass signals to interneurons. 2. Nerve signals travel along motor fibers to an effector. 3. Sensory receptors generate nerve signals. 4. Interneurons synapse with motor neurons. 5. There is a response to the stimulus. 3,4,1,2,5 2,1,3,4,5 1,2,3,4,5 3,1,4,2,5 2,4,1,3,5

answer

3,1,4,2,5

question

The action potential in a neuron is an all-or-nothing event. True or False

answer

True Once the threshold is reached, the action potential happens automatically and completely. If the threshold voltage is never reached, the action potential does not occur.

question

The brain stem contains the midbrain, the pons, and the medulla oblongata. True or False

answer

True These three sections make up the brain stem.

question

The cells of the nervous tissue are all neurons, cells that transmit nerve impulses. True or False

answer

False Neuroglia, which support and nourish neurons, are also part of nervous tissue.

question

The central nervous system is protected by... bone. muscle. fibrous cartilage. hyaline cartilage. elastic cartilage.

answer

bone

question

The cerebrum is associated with the two lateral ventricles. third ventricle. fourth ventricle. posterior ventricle. anterior ventricle.

answer

two lateral ventricles.

question

The division between the central nervous system and the peripheral nervous system is based on the anatomical differences between cells in the two locations. True or False.

answer

False The division between the CNS and the PNS is arbitrary.

question

The entire action potential (depolarization and repolarization) occurs in a matter of... milliseconds. seconds. minutes. hours. days.

answer

milliseconds.

question

The gap where there is no myelin sheath around a nerve fiber is called a node of Ranvier. True or False.

answer

True. The nodes of Ranvier are the gaps in the myelin sheath.

question

The intensity of a message is determined by how many action potentials are generated within a given time. True or False.

answer

True. An axon can conduct a volley of action potentials very quickly. The more action potentials, the more intense the message.

question

The left hemisphere of the brain is more involved in verbal functions than the right hemisphere. True or False.

answer

True. The left hemisphere is verbal, logical, analytical, and rational.

question

The limbic system blends ____________ and __________ into a united whole. primitive emotions, higher mental functions complex emotions, basic mental functions complex emotions, higher mental functions primitive emotions, basic mental functions basic survival skills, higher mental functions

answer

primitive emotions, higher mental functions

question

The postganglionic fiber in the parasympathetic division is long because the ganglia lie near or within the organ. True or False.

answer

False. The postganglionic fiber is short because the ganglia lie near or within the organ.

question

The primary somatosensory area receives sensory input from the sense of touch. the sense of taste. the sense of vision. the sense of hearing. the sense of smell.

answer

the sense of touch.

question

The repeated use of which drug leads to the body decreasing the natural production of endorphins? heroin marijuana K2 methamphetamine ecstasy

answer

heroin

question

The somatic division of the PNS controls all of the following except the skin. quadriceps muscle. tendons. heart muscle. bicep muscles.

answer

heart muscle.

question

The spinal cord belongs to the peripheral nervous system. central nervous system. axial nervous system. appendicular nervous system. none of these.

answer

central nervous system.

question

The spinal cord extends from the base of the brain through a large opening in the skull called the inferior ventricle. True or False.

answer

False. The spinal cord extends through a large opening in the skull called the foramen magnum.

question

The structures of the limbic system are linked together because of their position within the cerebrum even though they have a variety of functions. True or False.

answer

False. The limbic system is a functional grouping rather than an anatomical one.

question

The thalamus is on the receiving end for all sensory input except the sense of smell. visual sense. sense of hearing. somatosensory information. memory and emotions.

answer

sense of smell.

question

The two types of nerves in the peripheral nervous system are cranial nerves and spinal nerves. True or False.

answer

True The PNS contains the nerves. Cranial nerves arise from the brain and spinal nerves arise from the spinal cord.

question

The white matter of the spinal cord surrounds the gray matter. True or False.

answer

True. The gray matter is centrally located and shaped like the letter H. The white matter surrounds the gray matter.

question

There are only two types of neurotransmitters: acetylcholine for excitation and norepinephrine for inhibition. True or False.

answer

False. There are more than 100 substances known or suspected to be neurotransmitters.

question

Wernicke's area is associated with reflex centers for controlling heartbeat. sexual arousal. the ability to ride a bike. the sense of smell. the ability to speak.

answer

the ability to speak.

question

What ensures the one-way direction of an action potential? As soon as the action potential has passed by, that portion of the axon undergoes a short refractory period. Action potentials are self-propagating. Conduction of an action potential is an all-or-none event. An action potential at one node causes an action potential at the next node. An axon can conduct a volley of action potentials very quickly.

answer

As soon as the action potential has passed by, that portion of the axon undergoes a short refractory period.

question

What is the summing up of the excitatory and inhibitory signals by a neuron called? integration addition polarization depolarization firing

answer

integration

question

What type of memory does language depend upon? short-term semantic episodic skill long term

answer

semantic

question

What type of memory is involved in learning to ride a bike? short-term memory long-term memory semantic memory episodic memory skill memory

answer

skill memory

question

When a neurotransmitter is released into the synaptic cleft, the response of the receiving neuron will be toward excitation. True or False.

answer

False. Depending on the nature of the neurotransmitter, the response can be toward excitation or toward inhibition.

question

When a student crams for a test at 3 in the morning before the test, the information usually goes into skill memory. episodic memory. semantic memory. long-term memory. short-term memory.

answer

short-term memory.

question

Where do most of the nerve fibers of the sympathetic division of the autonomic motor pathways arise from? thoracolumbar spinal nerves cranial nerves brain stem cervical nerves medulla oblongata

answer

thoracolumbar spinal nerves

question

Which brain structure is associated with the limbic system? hippocampus frontal lobes medulla oblongata pons brain stem

answer

hippocampus

question

Which brain system receives sensory information from the skin, skeletal muscles, and tendons? somatic system of the PNS somatic system of the CNS autonomic system of the PNS autonomic system of the CNS all of these

answer

somatic system of the PNS

question

Which conducts an action potential faster and why? - myelinated fibers, the action potential moves through the myelin which allows it to travel faster - myelinated fibers, the action potential jumps from one node of Ranvier to another - unmyelinated fibers, the absence of myelin allows the action potential to travel faster - unmyelinated fibers, the action potential jumps from one node of Ranvier to another - unmyelinated fibers, the ions can move in and out of the cell faster without the myelin coating

answer

myelinated fibers, the action potential jumps from one node of Ranvier to another

question

Which drug is in the same category as nicotine? cocaine alcohol heroin marijuana none of these

answer

cocaine

question

Which is the largest part of the brain? medulla oblongata midbrain diencephalon cerebellum cerebrum

answer

cerebrum

question

Which of the following are mismatched concerning memory and learning? hippocampus and emotionally charged fearful memories long-term potentiation and memory storage semantic memory and numbers episodic memory and persons prefrontal area and where memories are used

answer

hippocampus and emotionally charged fearful memories

question

Which of the following areas is not associated with the frontal lobe? primary motor area primary visual area premotor area motor speech (Broca's) area prefrontal area

answer

primary visual area

question

Which of the following could happen to the neurotransmitter once it binds to the receiving membrane receptors? reabsorbed by the sending membrane absorbed by the receiving membrane in order to start the action potential stays bound to the receiving membrane released back into the synaptic cleft where it builds up degrades due to lack of Ca+

answer

reabsorbed by the sending membrane

question

Which of the following is a neuromodulator? substance P GABA acetylcholine dopamine serotonin

answer

substance P

question

Which of the following is associated with the PNS but not the CNS? Schwann cells myelin sheath axon dendrite node of Ranvier

answer

Schwann cells

question

Which of the following is mismatched? -sensory nerves--afferent -motor nerves--efferent -somatic motor nerves--smooth muscle, cardiac muscle, glands -somatic sensory nerves--skin, muscles, joints, special senses -visceral sensory nerves--body organs

answer

somatic motor nerves--smooth muscle, cardiac muscle, glands

question

Which of the following is not a function of the nervous system? receive sensory input cushion and protect soft tissue perform information processing perform integration generate motor output

answer

cushion and protect soft tissue

question

Which of the following is not a lobe of the cerebral hemisphere? reticular frontal parietal temporal occipital

answer

reticular

question

Which of the following is not a neurotransmitter? acetylcholine serotonin glutamate GABA ATP

answer

ATP

question

Which of the following is not a part of the brain? corpus callosum central canal cerebrum cerebellum pons

answer

central canal

question

Which of the following is not a type of neuron? sensory interneuron motor neuroglia afferent

answer

neuroglia

question

Which of the following is part of the limbic system? spinal cord primary somatosensory area amygdala reticular formation cerebellum

answer

amygdala

question

Which of the following parts of a neuron is correctly matched? cell body-short extensions that receive impulses axon-conducts nerve impulses dendrite-contains the nucleus and other organelles axon-contains the nucleus and other organelles dendrite-conducts nerve impulses

answer

axon-conducts nerve impulses

question

Which of the following statements about cranial nerves is not true? Humans have 31 pairs of cranial nerves. The cranial nerves are referred to by roman numerals. Some cranial nerves are only sensory nerves, while some are only motor fibers. Others are mixed. Cranial nerves are largely associated with the head, neck, and face. The vagus nerve is a cranial nerve.

answer

Humans have 31 pairs of cranial nerves.

question

Which of the following statements concerning the primary motor area is not true? The area that controls the thumb, fingers, and hand is larger than the area controlling the leg. The primary motor area is located anterior to the central sulcus. Control of muscles responsible for facial movements take up a large portion of the primary motor area. Voluntary commands to skeletal muscles begin in the primary motor area. The primary motor area is in the cerebellum.

answer

The primary motor area is in the cerebellum.

question

Which of the following statements is not true concerning acetylcholine's function? Acetylcholine has an excitatory effect on smooth muscle and glands. Acetylcholine is active in both the CNS and PNS. In the PNS, acetylcholine excites skeletal muscle. In the PNS, acetylcholine inhibits cardiac muscle. The enzyme acetylcholinesterase removes acetylcholine from the receiving cell's membrane.

answer

Acetylcholine has an excitatory effect on smooth muscle and glands.

question

Which of the following statements is not true concerning spinal nerves? The ventral root contains motor fibers exiting the gray matter. The dorsal root contains sensory fibers entering the gray matter. Spinal nerves are considered part of the CNS. The dorsal and ventral roots join before the spinal nerve leaves the vertebral canal. The spinal nerves project from the cord through intervertebral foramina.

answer

Spinal nerves are considered part of the CNS.

question

Which of the following statements is not true concerning the central nervous system? The central nervous system is made up of the spinal cord and the brain. The brain and spinal cord contain only white matter--myelinated axons that run together in bundles. Both the brain and spinal cord are protected by bone. Both the brain and spinal cord are protected by meninges. The spaces around the brain and spinal cord are filled with fluid.

answer

The brain and spinal cord contain only white matter--myelinated axons that run together in bundles.

question

Which of the following types of nerves is not covered by a protective myelin sheath? long axons gray matter of the CNS white matter of the CNS nerve fibers within the PNS axons of the CNS

answer

gray matter of the CNS

question

Which one of the following is entirely located within the central nervous system? sensory neuron sensory receptor motor neuron effector interneuron

answer

interneuron

question

Which part of the brain is not functioning correctly if an individual cannot learn new facts and retain them? hippocampus amygdala reticular formation medulla oblongata none of these

answer

hippocampus

question

Which two drugs are in the same category? nicotine and alcohol nicotine and heroin alcohol and heroin cocaine and marijuana marijuana and heroin

answer

alcohol and heroin

question

Why is the outside of a neuron positively charged? -because sodium ions gather around the outside of the cell membrane -because calcium ions gather around the outside of the cell membrane -because potassium ions gather around the inside of the cell membrane -because sodium ions gather around the inside of the cell membrane -because chloride ions gather around the outside of the cell membrane

answer

because sodium ions gather around the outside of the cell membrane

Biology 115 – Chapter 13 – Flashcards

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