Question 1

The myelin sheath that covers many CNS axons is formed by

Accepted Answer

A)  astrocytes. 
B)  satellite cells. 
C)  oligodendrocytes. 
D)  microglia. 
E)  ependymal cells. 
A)  astrocytes. 
B)  satellite cells. 
C)  oligodendrocytes. 
D)  microglia. 
E)  ependymal cells.

Question 2

The nervous tissue outside of the central nervous system composes the ________ nervous system.

Accepted Answer

The answer of The nervous tissue outside of the central...

Question 3

After acetylcholinesterase acts, the synaptic knob

Accepted Answer

A)  reabsorbs the acetylcholine. 
B)  reabsorbs the acetate. 
C)  reabsorbs the choline. 
D)  all of the above 
E)  none of the above 
A)  reabsorbs the acetylcholine. 
B)  reabsorbs the acetate. 
C)  reabsorbs the choline. 
D)  all of the above 
E)  none of the above

Question 4

Figure 11-2 The Nerve Action Potential
Use Figure 11-2 to answer the following questions:
-Which area of the graph occurs when there is a sudden inrush of sodium ions?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 5

The ________ nervous system provides involuntary regulation of smooth muscle, cardiac muscle, and glandular activity.

Accepted Answer

The answer of The ________ nervous system provides involuntary regulation...

Question 6

Raising the potassium ion concentration in the extracellular fluid surrounding a nerve cell will have which effect?

Accepted Answer

A)  depolarize it 
B)  hyperpolarize it 
C)  increase the magnitude of the potassium equilibrium potential 
D)  decrease the magnitude of the sodium equilibrium potential 
E)  increase the magnitude of the sodium equilibrium potential 
A)  depolarize it 
B)  hyperpolarize it 
C)  increase the magnitude of the potassium equilibrium potential 
D)  decrease the magnitude of the sodium equilibrium potential 
E)  increase the magnitude of the sodium equilibrium potential

Question 7

Glial cells that surround the neurons in ganglia are

Accepted Answer

A)  astrocytes. 
B)  satellite cells. 
C)  oligodendrocytes. 
D)  microglia. 
E)  ependymal cells. 
A)  astrocytes. 
B)  satellite cells. 
C)  oligodendrocytes. 
D)  microglia. 
E)  ependymal cells.

Question 8

The following are the steps involved in transmission at a cholinergic synapse.
1) Chemically gated sodium channels on the postsynaptic membrane are activated.
2) Calcium ions enter the synaptic knob.
3) Acetylcholinesterase hydrolyzes acetylcholine.
4) An action potential depolarizes the synaptic knob at the presynaptic membrane.
5) The synaptic knob reabsorbs choline.
6) Acetylcholine is released from storage vesicles by exocytosis.
7) Acetylcholine binds to receptors on the postsynaptic membrane.
8) Calcium ions are removed from the cytoplasm of the synaptic knob.
The correct sequence for these events is

Accepted Answer

A)  4, 2, 6, 7, 8, 5, 3, 1. 
B)  4, 2, 6, 7, 1, 8, 3, 5. 
C)  2, 4, 6, 7, 1, 8, 3, 5. 
D)  2, 5, 4, 6, 7, 1, 8, 3. 
E)  6, 4, 2, 7, 1, 8, 3, 5. 
A)  4, 2, 6, 7, 8, 5, 3, 1. 
B)  4, 2, 6, 7, 1, 8, 3, 5. 
C)  2, 4, 6, 7, 1, 8, 3, 5. 
D)  2, 5, 4, 6, 7, 1, 8, 3. 
E)  6, 4, 2, 7, 1, 8, 3, 5.

Question 9

If the axon terminal of a motor neuron suddenly became permeable to calcium ion,

Accepted Answer

A)  the neuron will fire an action potential. 
B)  the motor end plate will be depolarized. 
C)  the motor end plate will be hyperpolarized. 
D)  neurotransmitter release will be blocked. 
E)  the neuron will become unable to stimulate the muscle cell. 
A)  the neuron will fire an action potential. 
B)  the motor end plate will be depolarized. 
C)  the motor end plate will be hyperpolarized. 
D)  neurotransmitter release will be blocked. 
E)  the neuron will become unable to stimulate the muscle cell.

Question 10

________ neurons are short, with a cell body between dendrite and axon, and occur in special sense organs.

Accepted Answer

A)  Multipolar 
B)  Anaxonic 
C)  Unipolar 
D)  Bipolar 
E)  none of the above 
A)  Multipolar 
B)  Anaxonic 
C)  Unipolar 
D)  Bipolar 
E)  none of the above

Question 11

The ________ nervous system is composed of the brain and spinal cord.

Accepted Answer

A)  autonomic 
B)  peripheral 
C)  central 
D)  efferent 
E)  afferent 
A)  autonomic 
B)  peripheral 
C)  central 
D)  efferent 
E)  afferent

Question 12

Regions of the CNS with an abundance of myelinated axons constitute the ________ matter.

Accepted Answer

The answer of Regions of the CNS with an abundance...

Question 13

The period during which an excitable membrane can respond again, but only if the stimulus is greater than the threshold stimulus, is the ________.

Accepted Answer

relative r

Question 14

Integral membrane proteins that connect electrical synapses are called

Accepted Answer

A)  gap junctions. 
B)  receptors. 
C)  desmosomes. 
D)  sodium channels. 
E)  leak channels. 
A)  gap junctions. 
B)  receptors. 
C)  desmosomes. 
D)  sodium channels. 
E)  leak channels.

Question 15

Damage to ependymal cells would most likely affect the

Accepted Answer

A)  formation of myelin sheaths. 
B)  formation of cerebrospinal fluid. 
C)  formation of ganglia. 
D)  repair of axons. 
E)  transport of neurotransmitters within axons. 
A)  formation of myelin sheaths. 
B)  formation of cerebrospinal fluid. 
C)  formation of ganglia. 
D)  repair of axons. 
E)  transport of neurotransmitters within axons.

Question 16

Regions of the CNS where neuron cell bodies dominate constitute the ________ matter.

Accepted Answer

The answer of Regions of the CNS where neuron cell...

Question 17

________ monitor the position of skeletal muscles and joints.

Accepted Answer

The answer of ________ monitor the position of skeletal muscles...

Question 18

In the peripheral nervous system, Schwann cells participate in the repair of damaged nerves by

Accepted Answer

A)  producing new axons. 
B)  regenerating cell bodies for the neurons. 
C)  forming a cellular cord that directs axonal regrowth. 
D)  clearing away cellular debris. 
E)  producing more satellite cells that fuse to form new axons. 
A)  producing new axons. 
B)  regenerating cell bodies for the neurons. 
C)  forming a cellular cord that directs axonal regrowth. 
D)  clearing away cellular debris. 
E)  producing more satellite cells that fuse to form new axons.

Question 19

After a stroke, what type of glial cell accumulates within the affected brain region?

Accepted Answer

A)  Schwann cells 
B)  satellite cells 
C)  oligodendrocytes 
D)  microglia 
E)  ependymal cells 
A)  Schwann cells 
B)  satellite cells 
C)  oligodendrocytes 
D)  microglia 
E)  ependymal cells

Question 20

Which of the following is the most important excitatory neurotransmitter in the brain?

Accepted Answer

A)  glutamate 
B)  gamma aminobutyric acid 
C)  serotonin 
D)  noradrenaline 
E)  glycine 
A)  glutamate 
B)  gamma aminobutyric acid 
C)  serotonin 
D)  noradrenaline 
E)  glycine

Exam 11: Neural Tissue

The myelin sheath that covers many CNS axons is formed by

The nervous tissue outside of the central nervous system composes the ________ nervous system.

After acetylcholinesterase acts, the synaptic knob

Figure 11-2 The Nerve Action Potential Use Figure 11-2 to answer the following questions: -Which area of the graph occurs when there is a sudden inrush of sodium ions?

The ________ nervous system provides involuntary regulation of smooth muscle, cardiac muscle, and glandular activity.

Raising the potassium ion concentration in the extracellular fluid surrounding a nerve cell will have which effect?

Glial cells that surround the neurons in ganglia are

If the axon terminal of a motor neuron suddenly became permeable to calcium ion,

________ neurons are short, with a cell body between dendrite and axon, and occur in special sense organs.

The ________ nervous system is composed of the brain and spinal cord.

Regions of the CNS with an abundance of myelinated axons constitute the ________ matter.

The period during which an excitable membrane can respond again, but only if the stimulus is greater than the threshold stimulus, is the ________.

Integral membrane proteins that connect electrical synapses are called

Damage to ependymal cells would most likely affect the

Regions of the CNS where neuron cell bodies dominate constitute the ________ matter.

________ monitor the position of skeletal muscles and joints.

In the peripheral nervous system, Schwann cells participate in the repair of damaged nerves by

After a stroke, what type of glial cell accumulates within the affected brain region?

Which of the following is the most important excitatory neurotransmitter in the brain?

An Introduction to Anatomy and Physiology

Chemical Level of Organization

Cellular Level of Organization

Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Skeleton

Articulations

Skeletal Muscle Tissue

The Muscular System

The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood and Blood Vessels

The Heart and Cardiovascular Function

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters