nervous system Flashcards

1
Q

what is the nervous system?

A

a complex network of specialized cells, tissues and organs that coordinates and control the functions of the body.

it is responsible for receiving sensory information, processing it and generating responses

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2
Q

what are the 2 divided main parts in the NS?

A

central nervous system
peripheral nervous system

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3
Q

what is the process of the nervous system?

A

nerves send electrical signals to and from other cells, glands and muscles.

these receive information then interpt it and control your response.

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4
Q

what are the specialized cells called that that send signals?

A

neurons

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5
Q

what are the 6 main points of the brain labelled as?

A

frontal lobe

parietal lobe

temporal lobe

occipital lobe

cerebellum

brainstem

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6
Q

what does the CNS consist of?

A

the brain and the spinal cord

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7
Q

what is the frontal lobe responsible for?

A

voluntary movement
expressive language
managing higher functions

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8
Q

what is the parietal lobe important for?

A

processes your sense of touch and assembles input from your other senses

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9
Q

what does the temporal lobe important for?

A

auditory information and encording of the memory

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10
Q

what is the occipital lobe important for?

A

visual pperception (colour, form and motion)

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11
Q

what is the cerebellum important for?

A

mortor movement regulation and balence control

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12
Q

what is the brainstem responsible for?

A

sends signals from the brain to the ret of the body. controlling subconscious functions like breathing and heart rate

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13
Q

what is the peripheral nervous system?

A

lies outside your brain and spinal cord.
sending information from the body back to the brain, as well as carrying out commands

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14
Q

what does the PNS divide into?

A

somatic nervous system and autonomic nervous system

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15
Q

what is the somatic NS

A

responsible for voluntary movements and the relay of sensory information from the body to the CNS.

controlling skeletal muscles

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16
Q

what is the autonomic NS

A

regulates involuntary movements such as heart beats, digestion, respiration and glandular activity

17
Q

what does the autonomic ns divide into?

A

sympathetic and parasympathetic divisions

18
Q

what is the parasympathetic divisions

A

a network of nerves that relaxes your body after periods of stress or danger. It also helps run life-sustaining processes, like digestion, during times when you feel safe and relaxed.

19
Q

what can happen if your nerve gets damaged or dies?

A

can cause numbness, pins and needles or pain. maybe impossible to move that area

20
Q

what is the sympathetic divisions?

A

a network of nerves that helps your body activate its “fight-or-flight” response. This system’s activity increases when you’re stressed, in danger or physically active.

21
Q

what are the different ways nerve damages can happen?

A

disease, stroke, accidental injury, pressure, toxic substances, aging proccess.

22
Q

how can a stroke cause nerve injuries?

A

with a blockage or a bust in the brain with not enough blood part of the brain dies. and therefor cant send messages via nerves

23
Q

how can a accidental injury cause a nerve ending?

A

by it being crushed or cut in a car accident or a fall

24
Q

how does ageing cause nerve endings?

A

neruron signals may not travel as fast. feeling weaker and reflexes will slow down. loosing sensation in fingers and toes

25
Q

what is the SNS referred to?

A

fight or flight preparing it for emergency situations- stress or physical activity

26
Q

what is the pns referred as?

A

rest and digest. responsible for promoting relaxation, conserving and maintaining normal body functions during non stressful situation.