Topic 5 Flashcards Preview

GCSE Combined Science (Biology) > Topic 5 > Flashcards

Flashcards in Topic 5 Deck (11)
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1
Q

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

A

Receptors

2
Q

What is homeostasis?

A

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
Q

Why is homeostasis important?

A

To maintain optimum conditions for enzymes and all cell functions.

4
Q

List three things that are controlled by homeostasis.

A

1) Blood glucose
2) Body Temperature
3) Water levels

5
Q

What is the gap between two neurones called?

A

Synapse

6
Q

What type of signal travels along neurones?

A

Electrical

7
Q

What type of signal is transmitted across a synapse?

A

Chemical

8
Q
  1. What does CNS stand for?
  2. What two organs make up the CNS?
A
  1. Central nervous system
  2. Brain and spinal cord
9
Q

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

A

Brain

10
Q

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

A

sensory neurone → relay neurone → motor neurone

11
Q
A