2024  Practice Nervous System

2024 Practice Nervous System

Assessment

Flashcard

Science

12th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What ions are primarily involved in the generation of an electrical nerve impulse?

Back

Potassium and Sodium

2.

FLASHCARD QUESTION

Front

What is the insulating membrane that surrounds parts of the axon and helps impulses travel faster?

Back

Myelin Sheath

3.

FLASHCARD QUESTION

Front

In a neuron, what does the letter 'C' typically represent?

Back

Cell Body

4.

FLASHCARD QUESTION

Front

Where does depolarization and repolarization occur in a myelinated neuron?

Back

Node of Ranvier

5.

FLASHCARD QUESTION

Front

What is the charge of a neuron at rest?

Back

The exterior of the neuron is more positively charged relative to the interior, with an excess amount of sodium ions found on the exterior portion of the neuron.

6.

FLASHCARD QUESTION

Front

What is the function of the Myelin Sheath?

Back

To insulate the axon and increase the speed of electrical impulses.

7.

FLASHCARD QUESTION

Front

What role do Schwann Cells play in the nervous system?

Back

They produce the Myelin Sheath around peripheral nerve fibers.

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