Topic 5 Flashcards Preview

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Flashcards in Topic 5 Deck (11):
1

Name the cells that detect stimuli (changes in the environment)

Receptors

2

What is homeostasis?

The regulation of internal conditions of a cell or organism to maintain optimum conditions for function in response to internal and external changes

or

“Maintaining internal body conditions”

3

Why is homeostasis important?

To maintain optimum conditions for enzymes and all cell functions.

4

List three things that are controlled by homeostasis.

1) Blood glucose

2) Body Temperature

3) Water levels

5

What is the gap between two neurones called?

Synapse

6

What type of signal travels along neurones?

Electrical

7

What type of signal is transmitted across a synapse?

Chemical

8

1. What does CNS stand for?

2. What two organs make up the CNS?

1. Central nervous system

2. Brain and spinal cord

9

Name the organ from the CNS that is not involved in a reflex response.

Brain

10

List, in order, the neurones involved in a reflex response.

sensory neurone → relay neurone → motor neurone

11