Question 1

Most endocrine glands secrete paracrine substances that function as neurohormones.

Accepted Answer

A) True 
 B)False

Question 2

Complete each of the following statments.
____________________ are chemical messengers that bind to neuronal receptors at nonsynaptic sites and alter the effectiveness of ongoing synaptic activity.

Accepted Answer

The answer of Complete each of the following statments.
____________________ are...

Question 3

Drugs may influence synaptic transmission by

Accepted Answer

A)  altering the formation of neurotransmitters 
B)  blocking neurotransmitter reuptake 
C)  blocking receptors 
D)  blocking channels 
E)  all of these 
A)  altering the formation of neurotransmitters 
B)  blocking neurotransmitter reuptake 
C)  blocking receptors 
D)  blocking channels 
E)  all of these

Question 4

Which channel type is sensitive to serotonin?

Accepted Answer

A)  voltage-gated 
B)  chemically-gated 
C)  mechanically-gated 
D)  acoustically-gated 
E)  none of these 
A)  voltage-gated 
B)  chemically-gated 
C)  mechanically-gated 
D)  acoustically-gated 
E)  none of these

Question 5

The rising phase of the action potential is due to

Accepted Answer

A)  calcium equilibrium 
B)  potassium efflux 
C)  potassium influx 
D)  sodium efflux 
E)  sodium influx 
A)  calcium equilibrium 
B)  potassium efflux 
C)  potassium influx 
D)  sodium efflux 
E)  sodium influx

Question 6

Complete each of the following statments.
When a neuron starts to depolarize, ____________________ ions move into the cell.

Accepted Answer

The answer of Complete each of the following statments.
When a...

Question 7

Oligodendrocytes form a regeneration tube to guide a regenerating nerve fiber to its proper destination.

Accepted Answer

A) True 
 B)False

Question 8

The Na+ and K+ channels that open and close during an action potential are voltage-gated channels.

Accepted Answer

A) True 
 B)False

Question 9

A hypothetical postsynaptic neuron has three presynaptic inputs¾X, Y, and Z. When X and Y are stimulated simultaneously, the postsynaptic neuron undergoes an action potential, yet when X and Z are stimulated simultaneously, there is no change in the postsynaptic neuron's potential. What can you tell about neurons Y and Z?

Accepted Answer

A)  Y and Z are both excitatory. 
B)  Y and Z are both inhibitory. 
C)  Y is excitatory and Z is inhibitory. 
D)  Y is inhibitory and Z is excitatory. 
E)  Not enough information to answer. 
A)  Y and Z are both excitatory. 
B)  Y and Z are both inhibitory. 
C)  Y is excitatory and Z is inhibitory. 
D)  Y is inhibitory and Z is excitatory. 
E)  Not enough information to answer.

Most endocrine glands secrete paracrine substances that function as neurohormones.

Complete each of the following statments. ____________________ are chemical messengers that bind to neuronal receptors at nonsynaptic sites and alter the effectiveness of ongoing synaptic activity.

Drugs may influence synaptic transmission by

Which channel type is sensitive to serotonin?

The rising phase of the action potential is due to

Complete each of the following statments. When a neuron starts to depolarize, ____________________ ions move into the cell.

Oligodendrocytes form a regeneration tube to guide a regenerating nerve fiber to its proper destination.

The Na⁺ and K⁺ channels that open and close during an action potential are voltage-gated channels.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Exam 4: Principles of Neural and Hormonal Communication

Most endocrine glands secrete paracrine substances that function as neurohormones.

Complete each of the following statments. ____________________ are chemical messengers that bind to neuronal receptors at nonsynaptic sites and alter the effectiveness of ongoing synaptic activity.

Drugs may influence synaptic transmission by

Which channel type is sensitive to serotonin?

The rising phase of the action potential is due to

Complete each of the following statments. When a neuron starts to depolarize, ____________________ ions move into the cell.

Oligodendrocytes form a regeneration tube to guide a regenerating nerve fiber to its proper destination.

The Na+ and K+ channels that open and close during an action potential are voltage-gated channels.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

The Na⁺ and K⁺ channels that open and close during an action potential are voltage-gated channels.