In His Studies of Nerve Conduction Velocity, Hermann Von Helmholtz

question 117

Multiple Choice

In his studies of nerve conduction velocity, Hermann von Helmholtz noted that

• A) electrical signal speeds differ from nerve to nerve.
• B) nerve conduction velocity is at the speed of light.
• C) nerves conduct signals faster than do electrical wires.
• D) the velocity of nerve conduction is slower in nerves than in wires.
• E) different sensory systems use different conduction speeds.

Describe the structure and function of the teeth in the digestive process.

Understand the roles of various cells in the stomach and their secretions in digestive processes.

Identify the major digestive glands and their secretions.

Explain the structure and function of accessory organs in the digestive system.

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Definitions:

Negative Schema

A cognitive structure that allows people to readily make negative associations.

Negative Information

Data or facts that produce adverse or undesirable impressions or expectations.

Depressive Schema

Cognitive patterns and beliefs that predispose individuals to perceive the world and themselves in a negative light, often associated with depression.

Learned Helplessness

The cognitive, motivational, and emotional deficits that follow a perceived lack of control over important aversive events.