Question 1

Most pseudo-unipolar neurons are ________ neurons.

Accepted Answer

The answer of Most pseudo-unipolar neurons are ________ neurons....

Question 2

The nervous system and the endocrine system are the major control systems of the body.

Accepted Answer

A) True 
 B)False

Question 3

When a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to Na+,

Accepted Answer

A)  the membrane will be hyperpolarized. 
B)  more Cl− will also diffuse into the cell. 
C)  an excitatory postsynaptic potential (EPSP) will result. 
D)  the membrane will become impermeable to K+. 
E)  Na+ diffuses out of the cell. 
A)  the membrane will be hyperpolarized. 
B)  more Cl− will also diffuse into the cell. 
C)  an excitatory postsynaptic potential (EPSP) will result. 
D)  the membrane will become impermeable to K+. 
E)  Na+ diffuses out of the cell.

Question 4

Gap junctions are functionally ________ synapses.

Accepted Answer

A)  chemical 
B)  electrical 
C)  potential 
D)  intracellular 
E)  neuromuscular 
A)  chemical 
B)  electrical 
C)  potential 
D)  intracellular 
E)  neuromuscular

Question 5

Clusters of gray matter deep within the brain are called ________.

Accepted Answer

A)  cortices 
B)  nerves 
C)  ganglia 
D)  nuclei 
A)  cortices 
B)  nerves 
C)  ganglia 
D)  nuclei

Question 6

Local hyperpolarization in a synapse is called a/an ________.

Accepted Answer

A)  excitatory postsynaptic potential 
B)  resting membrane potential 
C)  inhibitory postsynaptic potential 
D)  gap junction potential 
E)  action potential 
A)  excitatory postsynaptic potential 
B)  resting membrane potential 
C)  inhibitory postsynaptic potential 
D)  gap junction potential 
E)  action potential

Question 7

Voltage-gated Na+ channels are sensitive to changes in the extracellular concentration of ________.

Accepted Answer

A)  K+ 
B)  proteins 
C)  Na+ 
D)  Cl− 
E)  Ca2+ 
A)  K+ 
B)  proteins 
C)  Na+ 
D)  Cl− 
E)  Ca2+

Question 8

Receptor molecules

Accepted Answer

A)  are nonspecific. 
B)  are always lipids. 
C)  attach to the synaptic cleft. 
D)  determine whether a neurotransmitter will be excitatory or inhibitory. 
E)  are not attached to ligand-gated channels. 
A)  are nonspecific. 
B)  are always lipids. 
C)  attach to the synaptic cleft. 
D)  determine whether a neurotransmitter will be excitatory or inhibitory. 
E)  are not attached to ligand-gated channels.

Question 9

The central nervous system includes the ________.

Accepted Answer

A)  ganglia 
B)  spinal cord 
C)  spinal nerves 
D)  cranial nerves 
E)  sensory receptors 
A)  ganglia 
B)  spinal cord 
C)  spinal nerves 
D)  cranial nerves 
E)  sensory receptors

Question 10

The blood-brain barrier

Accepted Answer

A)  permits passage of foreign substances from the blood to the neurons. 
B)  prohibits the transport of amino acids and glucose to the neurons. 
C)  prohibits the removal of waste materials from the neurons. 
D)  protects neurons from toxic substances in the blood. 
E)  does not prevent fluctuations in the composition of the blood from affecting the functions of the brain. 
A)  permits passage of foreign substances from the blood to the neurons. 
B)  prohibits the transport of amino acids and glucose to the neurons. 
C)  prohibits the removal of waste materials from the neurons. 
D)  protects neurons from toxic substances in the blood. 
E)  does not prevent fluctuations in the composition of the blood from affecting the functions of the brain.

Question 11

The nervous system

Accepted Answer

A)  monitors internal and external stimuli. 
B)  transmits information in the form of action potentials. 
C)  interprets or assesses information. 
D)  maintains homeostasis. 
E)  All of the choices are correct. 
A)  monitors internal and external stimuli. 
B)  transmits information in the form of action potentials. 
C)  interprets or assesses information. 
D)  maintains homeostasis. 
E)  All of the choices are correct.

Question 12

The autonomic nervous system

Accepted Answer

A)  stimulates skeletal muscle contractions. 
B)  has two sets of neurons in a series. 
C)  is involved in problem solving. 
D)  is under voluntary control. 
E)  does not include the central nervous system. 
A)  stimulates skeletal muscle contractions. 
B)  has two sets of neurons in a series. 
C)  is involved in problem solving. 
D)  is under voluntary control. 
E)  does not include the central nervous system.

Question 13

Action potentials are conducted more rapidly when transmission is

Accepted Answer

A)  from node to node on a myelinated axon. 
B)  on a small diameter axon. 
C)  on an unmyelinated axon. 
D)  from internode to internode. 
E)  from internode to node on a myelinated axon. 
A)  from node to node on a myelinated axon. 
B)  on a small diameter axon. 
C)  on an unmyelinated axon. 
D)  from internode to internode. 
E)  from internode to node on a myelinated axon.

Question 14

Groups of related nerve cell bodies located outside of the central nervous system are called ________.

Accepted Answer

A)  ganglia 
B)  plexus 
C)  tracts 
D)  nerves 
A)  ganglia 
B)  plexus 
C)  tracts 
D)  nerves

Question 15

Which of the following is NOT a glial cell of the CNS?

Accepted Answer

A)  Ependymal cells 
B)  Satellite cells 
C)  Oligodendrocytes 
D)  Astrocytes 
A)  Ependymal cells 
B)  Satellite cells 
C)  Oligodendrocytes 
D)  Astrocytes

Question 16

During the absolute refractory period, the cell

Accepted Answer

A)  generates many local potentials. 
B)  is insensitive to further stimulation. 
C)  responds to even weak stimuli. 
D)  reverses the direction of the action potential. 
E)  is very sensitive. 
A)  generates many local potentials. 
B)  is insensitive to further stimulation. 
C)  responds to even weak stimuli. 
D)  reverses the direction of the action potential. 
E)  is very sensitive.

Question 17

Synapses in which gap junctions allow ions to diffuse quickly from cell to cell are called ________ synapses.

Accepted Answer

A)  electrical 
B)  chemical 
A)  electrical 
B)  chemical

Question 18

Which of the following is mismatched?

Accepted Answer

A)  Central nervous system - brain 
B)  Autonomic nervous system - sympathetic and parasympathetic divisions 
C)  Peripheral nervous system - spinal nerves 
D)  Somatic nervous system - sensory division of PNS 
E)  Peripheral nervous system - sensory and motor divisions 
A)  Central nervous system - brain 
B)  Autonomic nervous system - sympathetic and parasympathetic divisions 
C)  Peripheral nervous system - spinal nerves 
D)  Somatic nervous system - sensory division of PNS 
E)  Peripheral nervous system - sensory and motor divisions

Question 19

-Identify structure "B" on the neuron.
A) Schwann cell
B) Node of Ranvier
C) Neuron cell body (soma)
D) Dendrites
E) Axon

Accepted Answer

The answer of  
-Identify structure "B" on the neuron.
A)...

Question 20

The absolute refractory period assures

Accepted Answer

A)  prolonged depolarization during the action potential. 
B)  completion of repolarization before another action potential. 
C)  that no after-potential occurs. 
D)  reversal of the direction of propagation of the action potential. 
E)  that the stimulus is strong enough to elicit a response. 
A)  prolonged depolarization during the action potential. 
B)  completion of repolarization before another action potential. 
C)  that no after-potential occurs. 
D)  reversal of the direction of propagation of the action potential. 
E)  that the stimulus is strong enough to elicit a response.

Exam 11: Functional Organization of Nervous Tissue

Most pseudo-unipolar neurons are ________ neurons.

The nervous system and the endocrine system are the major control systems of the body.

When a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to Na+,

Gap junctions are functionally ________ synapses.

Clusters of gray matter deep within the brain are called ________.

Local hyperpolarization in a synapse is called a/an ________.

Voltage-gated Na+ channels are sensitive to changes in the extracellular concentration of ________.

Receptor molecules

The central nervous system includes the ________.

The blood-brain barrier

The nervous system

The autonomic nervous system

Action potentials are conducted more rapidly when transmission is

Groups of related nerve cell bodies located outside of the central nervous system are called ________.

Which of the following is NOT a glial cell of the CNS?

During the absolute refractory period, the cell

Synapses in which gap junctions allow ions to diffuse quickly from cell to cell are called ________ synapses.

Which of the following is mismatched?

-Identify structure "B" on the neuron. A) Schwann cell B) Node of Ranvier C) Neuron cell body (soma) D) Dendrites E) Axon

The absolute refractory period assures

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

When a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to Na⁺,

Voltage-gated Na⁺ channels are sensitive to changes in the extracellular concentration of ________.