Question 1

If the receptor site for a neurotransmitter were completely blocked:

Accepted Answer

A) synaptic transmission would fail. 
B) a weaker action potential would result. 
C) the presynaptic neuron would release a different neurotransmitter. 
D) neurotransmitter release would stop. 
A) synaptic transmission would fail. 
B) a weaker action potential would result. 
C) the presynaptic neuron would release a different neurotransmitter. 
D) neurotransmitter release would stop.

Question 2

Branches that may occur along an axon are called:

Accepted Answer

A) collaterals. 
B) dendrites. 
C) hillocks. 
D) telodendria. 
A) collaterals. 
B) dendrites. 
C) hillocks. 
D) telodendria.

Question 3

Resting membrane potential is maintained by the sodium-potassium ion pump,or Na+/K+ ATPase,which brings:

Accepted Answer

A) two potassium ions into the cytosol and two sodium ions into the extracellular fluid. 
B) three potassium ions into the cytosol and three sodium ions into the extracellular fluid. 
C) two potassium ions into the cytosol and three sodium ions into the extracellular fluid. 
D) three potassium ions into the cytosol and two sodium ions into the extracellular fluid. 
A) two potassium ions into the cytosol and two sodium ions into the extracellular fluid. 
B) three potassium ions into the cytosol and three sodium ions into the extracellular fluid. 
C) two potassium ions into the cytosol and three sodium ions into the extracellular fluid. 
D) three potassium ions into the cytosol and two sodium ions into the extracellular fluid.

Question 4

What would most likely lead to an inhibitory postsynaptic potential (IPSP)?

Accepted Answer

A) opening of calcium ion channels 
B) opening of sodium ion channels 
C) closure of chloride ion channels 
D) opening of potassium ion channels 
A) opening of calcium ion channels 
B) opening of sodium ion channels 
C) closure of chloride ion channels 
D) opening of potassium ion channels

Question 5

Which nervous system division is responsible for the integration of sensory information?

Accepted Answer

A) visceral motor division 
B) central nervous system 
C) peripheral nervous system 
D) somatic motor division 
A) visceral motor division 
B) central nervous system 
C) peripheral nervous system 
D) somatic motor division

Question 6

While driving home,Henry watched as a large truck drifted into his lane from oncoming traffic.Henry's central nervous system integrated this information to determine the position of his own vehicle,and then he made a decision to swerve his vehicle closer to the side of the road to avoid a head-on collision.From this scenario,determine the sensory information and his motor functions.

Accepted Answer

The collection of information about one'

Question 7

Determine the fiber type in which propagation of an action potential will occur most quickly.

Accepted Answer

A) type C fiber 
B) unmyelinated type B fiber 
C) myelinated type A fiber 
D) myelinated type B fiber 
A) type C fiber 
B) unmyelinated type B fiber 
C) myelinated type A fiber 
D) myelinated type B fiber

Question 8

Upon entering your house,you noticed the smell of cake baking in the oven.What division of the peripheral nervous system is responsible?

Accepted Answer

A) somatic sensory division 
B) visceral sensory division 
C) somatic motor division 
D) visceral motor division 
A) somatic sensory division 
B) visceral sensory division 
C) somatic motor division 
D) visceral motor division

Question 9

Explain the purpose of a neuronal pool.

Accepted Answer

Neuronal pools are networks of interneur

Question 10

A local hyperpolarization that makes the membrane potential of the postsynaptic neuron more negative is:

Accepted Answer

A) a saltatory stimulus. 
B) an excitatory postsynaptic potential (EPSP). 
C) a temporal stimulus. 
D) an inhibitory postsynaptic potential (IPSP). 
A) a saltatory stimulus. 
B) an excitatory postsynaptic potential (EPSP). 
C) a temporal stimulus. 
D) an inhibitory postsynaptic potential (IPSP).

Question 11

What ion triggers synaptic vesicles to release neurotransmitters into the synaptic cleft?

Accepted Answer

A) calcium 
B) sodium 
C) chlorine 
D) magnesium 
A) calcium 
B) sodium 
C) chlorine 
D) magnesium

Question 12

Does a local potential guarantee the creation of an action potential? Explain.

Accepted Answer

A local potential must be strong enough

Question 13

Which of the following is controlled by the somatic motor division?

Accepted Answer

A) cardiac muscle 
B) glands 
C) smooth muscle 
D) skeletal muscle 
A) cardiac muscle 
B) glands 
C) smooth muscle 
D) skeletal muscle

Question 14

Regeneration of neural tissue in the peripheral nervous system (PNS)is possible only if the neuron's cell body remains intact.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following moves the membrane potential of the postsynaptic neuron closer to threshold?

Accepted Answer

A) inhibitory postsynaptic potential (IPSP) 
B) hyperpolarization 
C) opening of potassium ion channels 
D) excitatory postsynaptic potential (EPSP) 
A) inhibitory postsynaptic potential (IPSP) 
B) hyperpolarization 
C) opening of potassium ion channels 
D) excitatory postsynaptic potential (EPSP)

Question 16

When a second excitatory postsynaptic potential (EPSP)arrives at a single synapse before the effects of the first have disappeared,what results?

Accepted Answer

A) hyperpolarization 
B) spatial summation 
C) temporal summation 
D) inhibition of the impulse 
A) hyperpolarization 
B) spatial summation 
C) temporal summation 
D) inhibition of the impulse

Question 17

Voltage-gated sodium channels have both an activation gate and:

Accepted Answer

A) an inactivation gate. 
B) a threshold gate. 
C) a leak gate. 
D) a swinging gate. 
A) an inactivation gate. 
B) a threshold gate. 
C) a leak gate. 
D) a swinging gate.

Question 18

Discuss the role of calcium ions in the transmission of an action potential at the synapse.

Accepted Answer

An action potential reaching the axon te

Question 19

Which of the following are organs of the central nervous system?

Accepted Answer

A) spinal cord and spinal nerves 
B) brain,cranial nerves,spinal cord,and spinal nerves 
C) brain and cranial nerves 
D) brain and spinal cord 
A) spinal cord and spinal nerves 
B) brain,cranial nerves,spinal cord,and spinal nerves 
C) brain and cranial nerves 
D) brain and spinal cord

Question 20

Which statement best describes the all-or-none principle?

Accepted Answer

A) Local,or graded,potentials will always become action potentials. 
B) All voltage-gated sodium channels will open or none will open. 
C) An action potential happens completely,or it doesn't happen at all. 
D) All neurons conduct an action potential together,or none do. 
A) Local,or graded,potentials will always become action potentials. 
B) All voltage-gated sodium channels will open or none will open. 
C) An action potential happens completely,or it doesn't happen at all. 
D) All neurons conduct an action potential together,or none do.

Exam 11: Introduction to the Nervous System Nervous Tissue

If the receptor site for a neurotransmitter were completely blocked:

Branches that may occur along an axon are called:

Resting membrane potential is maintained by the sodium-potassium ion pump,or Na+/K+ ATPase,which brings:

What would most likely lead to an inhibitory postsynaptic potential (IPSP)?

Which nervous system division is responsible for the integration of sensory information?

Determine the fiber type in which propagation of an action potential will occur most quickly.

Upon entering your house,you noticed the smell of cake baking in the oven.What division of the peripheral nervous system is responsible?

Explain the purpose of a neuronal pool.

A local hyperpolarization that makes the membrane potential of the postsynaptic neuron more negative is:

What ion triggers synaptic vesicles to release neurotransmitters into the synaptic cleft?

Does a local potential guarantee the creation of an action potential? Explain.

Which of the following is controlled by the somatic motor division?

Regeneration of neural tissue in the peripheral nervous system (PNS)is possible only if the neuron's cell body remains intact.

Which of the following moves the membrane potential of the postsynaptic neuron closer to threshold?

When a second excitatory postsynaptic potential (EPSP)arrives at a single synapse before the effects of the first have disappeared,what results?

Voltage-gated sodium channels have both an activation gate and:

Discuss the role of calcium ions in the transmission of an action potential at the synapse.

Which of the following are organs of the central nervous system?

Which statement best describes the all-or-none principle?

Introduction to Anatomy Physiology

The Chemistry of Life

The Cell

Histology

The Integumentary System

Bones and Bone Tissue

The Skeletal System

Articulations

The Muscular System

Muscle Tissue Physiology

The Central Nervous System

The Peripheral Nervous System

The Autonomic Nervous System Homeostasis

The Special Senses

The Endocrine System

The Cardiovascular System I: the Heart

The Cardiovascular System Ii: the Blood Vessels

Blood

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acid-Base Homeostasis

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Resting membrane potential is maintained by the sodium-potassium ion pump,or Na⁺/K⁺ATPase,which brings: