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Biology > B10 - The Human Nervous System > Flashcards

B10 - The Human Nervous System Flashcards

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1
Q

Conditions inside the body are known as the ________ environment.

A

Internal.

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2
Q

Your body cannot keep working if the ________ environment changes.

A

Internal.

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3
Q

The balancing act of containing the bodies ________ environment is called ___________.

A

Internal…Homeostasis…

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4
Q

________ only work at their best in specific conditions of Temperature and pH.

A

Enzymes.

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5
Q

Enzymes control all the __________ of the Cell.

A

Functions.

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6
Q

Examples of Internal Conditions that are controlled in the body:

A

Water Content, Body Temperature and Blood Glucose Concentration.

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7
Q

Homeostasis involves __-__________ and control.

A

Co-Ordination.

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8
Q

Detecting changes and responding to them involves _________ control systems.

A

Automatic.

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9
Q

Automatic Control Systems include ________ responses in the Nervous System and ________ responses in the Hormone System.

A

Nervous…Chemical…

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10
Q

_________ detect changes in the internal or external environment known as _______.

A

Receptors…Stimuli…

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11
Q

Receptors are part of the ________ or _________ Control System in the body.

A

Nervous…Hormonal…

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12
Q

__-__________ Centres are areas that receive and _______ the information given by the Receptors.

A

Co-Ordination…Process…

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13
Q

Co-Ordination Centres send out a ______ and co-ordinate the ________ of the body.

A

Signal…Response…

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14
Q

The _____ and ______ cord act as Co-Ordination Centres for both the _______ and ________ System.

A

Brain…Spinal…Nervous…Hormonal…

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15
Q

Responses of the Effectors restore __________ in the body to the Optimum Level.

A

Conditions.

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16
Q

Effectors are _______ or Glands that respond to a ________ that has been received.

A

Muscles…Stimulus…

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17
Q

What are the Control Systems?

A

Receptors, Co-Ordination Centres and Effectors.

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18
Q

The Nervous System carries _________ Signals known as Impulses that ______ to changes in the Environment.

A

Electrical…Changes…

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19
Q

Receptor Cells have a ______, Cytoplasm and a ____ Membrane.

A

Nucleus…Cell…

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20
Q

Receptor Cells are usually found in _______ Sense Organs, like the Eye or Skin.

A

Special.

21
Q

We have different types of _______ Receptors.

A

Sensory.

22
Q

When a _______ Receptor detects a Stimulus, information is sent as an Electrical _______ that passes along Special Cells called Neurones.

A

Sensory…Impulse…

23
Q

Thousands of Neurones clustered together are called ______.

A

Nerves.

24
Q

The Electrical Impulse travels along the ________ until it reaches the _______ _______ ______ (CNS).

A

Neurone…Central Nervous System…

25
Q

What is the Central Nervous System (CNS) made up of?

A

The Brain and Spinal Cord.

26
Q

Cells that carry ________ Impulses from your Sense Organs to your Central Nervous System (___) are called _______ Neurones.

A

Electrical…CNS…Sensory…

27
Q

The Brain receives and sends information back out along Special _____ called _____ Neurones.

A

Cells…Motor…

28
Q

Motor Neurones carry information from the _______ _______ ______ (CNS) to the rest of your body.

A

Central Nervous System.

29
Q

Motor ________ carry Electrical ________ to make the Effectors respond.

A

Neurones…Impulses…

30
Q

Muscles respond to _________ Impulses by contracting.

A

Electrical.

31
Q

Your Glands respond to Electrical _________ by releasing ________ Substances

A

Impulses…Chemical…

32
Q

How is your Nervous System summed up:

A

Stimulus –> Receptors –> CNS –> Effectors

33
Q

Automatic _________ are known as Reflexes.

A

Responses.

34
Q

Reflexes DO NOT involve the conscious part of the _____.

A

Brain.

35
Q

What the three types of Neurones?

A

Sensory, Motor and Relay.

36
Q

Relay Neurones connect a _____ Neurone and a _______ Neurone and are found in the Central Nervous System (___).

A

Sensory…Motor…CNS…

37
Q

An ________ Impulse passes from the Receptor along the _______ Neurone to the CNS, then passes a Relay _______ and back along the _____ Neurone. The Electrical _______ will arrive at the Effector organ. We call this pathway a Reflex ___.

A

Electrical…Sensory…Neurone…Motor…Impulse…Arc…

38
Q

What do Reflex Arc’s do?

A

Bypass the conscious areas of the Brain.

39
Q

Neurones are ___ joined up directly together.

A

Not.

40
Q

There are ‘junctions’ between ________ called Synapses.

A

Neurones.

41
Q

Electrical ________ have to cross certain Synapses.

A

Impulses.

42
Q

The Reflex Pathway is:

Stimulus –> ________ –> Sensory _______ –> _____ Neurone –> Motor Neurone –> ________ –> Response

A

Receptor…Neurone…Relay…Effector…

43
Q

When you touch a hot object, a ________ in your skin is stimulated.

A

Receptor.

44
Q

When you touch a hot object, an ________ Impulse from a Receptor passes along a _______ Neurone to the Central Nervous System (CNS).

A

Electrical…Sensory…

45
Q

When an Electrical _______ from the Sensory _______ arrives at the Synapse with the _____ Neurone, a chemical is released.

A

Impulse…Neurone…Relay…

46
Q

The chemical made diffuses across the Synapse to the Relay _______ where it sets off an _________ Impulse that travels along the Relay Neurone.

A

Neurone…Electrical…

47
Q

When the Electrical _______ from the Chemical reaches the Synapse between the _____ Neurone and a _____ Neurone, another Chemical is released. Again this Chemical diffuses and creates another Electrical Impulse travelling down the Motor _______ to the Effector.

A

Impulse…Relay…Motor…Neurone…

48
Q

When the final Electrical _______ reaches the ________ Organ, it is stimulated to respond.

A

Impulse…Effector…

Biology (18 decks)

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