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IB Biology: C3.1-Reflex Actions and Reflex Arc

IB Biology: C3.1-Reflex Actions and Reflex Arc

Assessment

Flashcard

Biology

9th - 12th Grade

Practice Problem

Hard

Created by

Herbert Asiedu-Mante

FREE Resource

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8 questions

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1.

FLASHCARD QUESTION

Front

What is a reflex action?

Back

A reflex action is a rapid, automatic or involuntary response to a specific stimulus.

2.

FLASHCARD QUESTION

Front

What is a reflex arc?

Back

A reflex arc is the path (including participating cells) along which impulses travel in a reflex action.

3.

FLASHCARD QUESTION

Front

What is the purpose of reflex actions?

Back

Reflex actions provide a means of automatically and rapidly integrating and coordinating stimuli with the responses of effectors aimed at protecting the body from harm.

4.

FLASHCARD QUESTION

Front

What is an example of involuntary responses with skeletal muscles as the effector?

Back

A reflex arc is an example of involuntary responses with skeletal muscles as the effector.

5.

FLASHCARD QUESTION

Front

What happens when you touch a sharp pin with your finger?

Back

Receptors initiate afferent action potentials that travel through the hand to the spinal cord through one of the spinal nerves.

6.

FLASHCARD QUESTION

Front

What occurs when the afferent neuron enters the spinal cord?

Back

The afferent neuron synapses with an interneuron in the grey matter.

7.

FLASHCARD QUESTION

Front

What is the role of the interneuron or relay neuron in a reflex arc?

Back

The interneuron or relay neuron synapses with a motor neuron in the grey matter.

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