Question 1

At the end of an action potential ____.

Accepted Answer

A) the membrane potential declines to the resting state 
B) the membrane voltage drops to zero 
C) sodium and potassium channels remain open 
D) the membrane potential exceeds +50 mV 
E) potassium moves into the cell 
A) the membrane potential declines to the resting state 
B) the membrane voltage drops to zero 
C) sodium and potassium channels remain open 
D) the membrane potential exceeds +50 mV 
E) potassium moves into the cell

Question 2

When voltage-gated sodium and potassium channels open during an action potential, in which direction do the ions flow?

Accepted Answer

A) Both sodium and potassium flow from the interstitial fluid into the cytoplasm. 
B) Both sodium and potassium flow from the cytoplasm to the interstitial fluid. 
C) Sodium flows from the cytoplasm to the interstitial fluid and potassium flows in the opposite direction. 
D) Sodium flows from the interstitial fluid to the cytoplasm and potassium flows in the opposite direction. 
E) Potassium flows from the interstitial fluid to the cytoplasm and sodium flows in the opposite direction. 
A) Both sodium and potassium flow from the interstitial fluid into the cytoplasm. 
B) Both sodium and potassium flow from the cytoplasm to the interstitial fluid. 
C) Sodium flows from the cytoplasm to the interstitial fluid and potassium flows in the opposite direction. 
D) Sodium flows from the interstitial fluid to the cytoplasm and potassium flows in the opposite direction. 
E) Potassium flows from the interstitial fluid to the cytoplasm and sodium flows in the opposite direction.

Question 3

Which technique detects voltage (electrical activity) fluctuations in the brain?

Accepted Answer

A) molecular biology techniques using brain tissue 
B) x-rays 
C) positron emission tomography (PET) 
D) electroencephalograph (EEG) 
E) functional magnetic resonance imaging (fMRI) 
A) molecular biology techniques using brain tissue 
B) x-rays 
C) positron emission tomography (PET) 
D) electroencephalograph (EEG) 
E) functional magnetic resonance imaging (fMRI)

Question 4

White matter consists of ____.

Accepted Answer

A) cell bodies 
B) dendrites 
C) axon terminals 
D) myelinated axons 
E) meninges 
A) cell bodies 
B) dendrites 
C) axon terminals 
D) myelinated axons 
E) meninges

Question 5

The two functional divisions of the peripheral nervous system are the ____.

Accepted Answer

A) somatic and autonomic systems 
B) sympathetic and parasympathetic systems 
C) peripheral and central systems 
D) afferent and autonomic systems 
E) cranial and skeletal nerves 
A) somatic and autonomic systems 
B) sympathetic and parasympathetic systems 
C) peripheral and central systems 
D) afferent and autonomic systems 
E) cranial and skeletal nerves

Question 6

Neurons of the somatic nervous system relay ____.

Accepted Answer

A) commands to skeletal muscles 
B) information from the internal environment to the brain 
C) signals to smooth and cardiac muscles 
D) signals to adjust digestion 
E) signals to adjust the breathing rate 
A) commands to skeletal muscles 
B) information from the internal environment to the brain 
C) signals to smooth and cardiac muscles 
D) signals to adjust digestion 
E) signals to adjust the breathing rate

Question 7

Clusters of cell bodies of neurons are known as ____.

Accepted Answer

A) nerve cords 
B) ganglia 
C) a plexus 
D) notochords 
E) nerves 
A) nerve cords 
B) ganglia 
C) a plexus 
D) notochords 
E) nerves

Question 8

Many psychoactive drugs lead to addiction, which involves the activity of _____.

Accepted Answer

A) epinephrine 
B) adenosine 
C) dopamine 
D) serotonin 
E) endorphins 
A) epinephrine 
B) adenosine 
C) dopamine 
D) serotonin 
E) endorphins

Question 9

The ____ controls the basic responses necessary to maintain life processes (for example, breathing and heartbeat).

Accepted Answer

A) medulla oblongata 
B) corpus callosum 
C) central sulcus 
D) cerebellum 
E) cerebral cortex 
A) medulla oblongata 
B) corpus callosum 
C) central sulcus 
D) cerebellum 
E) cerebral cortex

Question 10

The two major divisions of the vertebral nervous system are the ____.

Accepted Answer

A) autonomic and peripheral systems 
B) sympathetic and parasympathetic systems 
C) cranial and spinal nerves 
D) central and peripheral nervous systems 
E) brain and spinal cord 
A) autonomic and peripheral systems 
B) sympathetic and parasympathetic systems 
C) cranial and spinal nerves 
D) central and peripheral nervous systems 
E) brain and spinal cord

Question 11

Match the region of the vertebrate brain to its function.
-This region of the brain perceives sensory input and controls motor output.

Accepted Answer

A) cerebrum 
B) hypothalamus 
C) limbic system 
D) cerebellum 
E) medulla oblongata 
A) cerebrum 
B) hypothalamus 
C) limbic system 
D) cerebellum 
E) medulla oblongata

Question 12

Which brain region plays an essential role in the formation of declarative memories?

Accepted Answer

A) cerebrum 
B) cerebellum 
C) hippocampus 
D) thalamus 
E) hypothalamus 
A) cerebrum 
B) cerebellum 
C) hippocampus 
D) thalamus 
E) hypothalamus

Question 13

The ____ connects the cerebrum with the cerebellum and the spinal cord with the midbrain.

Accepted Answer

A) cerebrum 
B) pons 
C) cerebellum 
D) central sulcus 
E) hypothalamus 
A) cerebrum 
B) pons 
C) cerebellum 
D) central sulcus 
E) hypothalamus

Question 14

Four of the five answers listed below are actions mediated by the peripheral nervous system. Select the exception.

Accepted Answer

A) carrying signals to smooth muscle 
B) controlling emotion 
C) controlling glands 
D) carrying signals to and from the skin 
E) reflexive responses 
A) carrying signals to smooth muscle 
B) controlling emotion 
C) controlling glands 
D) carrying signals to and from the skin 
E) reflexive responses

Question 15

The ____ controls basic drives such as hunger, sex, and thirst.

Accepted Answer

A) cerebrum 
B) pons 
C) cerebellum 
D) thalamus 
E) hypothalamus 
A) cerebrum 
B) pons 
C) cerebellum 
D) thalamus 
E) hypothalamus

Question 16

Neurotransmitters are stored in the ____ of the neuron.

Accepted Answer

A) dendrites 
B) cell body 
C) axon trigger zone 
D) axon terminal 
E) axon conducting zone 
A) dendrites 
B) cell body 
C) axon trigger zone 
D) axon terminal 
E) axon conducting zone

Question 17

The brain and spinal cord are covered by the protective ____.

Accepted Answer

A) ventricles 
B) meninges 
C) cerebrospinal sheaths 
D) myelin 
E) endothelium 
A) ventricles 
B) meninges 
C) cerebrospinal sheaths 
D) myelin 
E) endothelium

Question 18

The input zone of a neuron involves the ____.

Accepted Answer

A) axon only 
B) axonal terminals only 
C) cell body only 
D) dendrites and axons 
E) cell body and its dendrites 
A) axon only 
B) axonal terminals only 
C) cell body only 
D) dendrites and axons 
E) cell body and its dendrites

Question 19

After an action potential, _____, ensuring that the action potential flows in only one direction.

Accepted Answer

A) potassium ions flow into the cell 
B) potassium channels are unable to open 
C) sodium channels are unable to open for a brief period 
D) sodium channels remain open 
E) the neuron reaches threshold potential 
A) potassium ions flow into the cell 
B) potassium channels are unable to open 
C) sodium channels are unable to open for a brief period 
D) sodium channels remain open 
E) the neuron reaches threshold potential

Question 20

What is the limbic system? What does it control?

Accepted Answer

The limbic system is a group o

Exam 29: Neural Control

At the end of an action potential ____.

When voltage-gated sodium and potassium channels open during an action potential, in which direction do the ions flow?

Which technique detects voltage (electrical activity) fluctuations in the brain?

White matter consists of ____.

The two functional divisions of the peripheral nervous system are the ____.

Neurons of the somatic nervous system relay ____.

Clusters of cell bodies of neurons are known as ____.

Many psychoactive drugs lead to addiction, which involves the activity of _____.

The ____ controls the basic responses necessary to maintain life processes (for example, breathing and heartbeat).

The two major divisions of the vertebral nervous system are the ____.

Match the region of the vertebrate brain to its function. -This region of the brain perceives sensory input and controls motor output.

Which brain region plays an essential role in the formation of declarative memories?

The ____ connects the cerebrum with the cerebellum and the spinal cord with the midbrain.

Four of the five answers listed below are actions mediated by the peripheral nervous system. Select the exception.

The ____ controls basic drives such as hunger, sex, and thirst.

Neurotransmitters are stored in the ____ of the neuron.

The brain and spinal cord are covered by the protective ____.

The input zone of a neuron involves the ____.

After an action potential, _____, ensuring that the action potential flows in only one direction.

What is the limbic system? What does it control?

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