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Psychology- Biopsychology > The nervous and endocrine systems > Flashcards

The nervous and endocrine systems Flashcards

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1
Q

What is the function of the nervous system?

A

Communication hub of the body- sends signals between neurons

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2
Q

What is the structure of the nervous system?

A

PNS and CNS

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3
Q

What is the function of the central nervous system?

A

Origin of all complex commands and decisions- receives, processes, and responds to sensory information

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4
Q

What is the structure of the CNS?

A

Brain and spinal cord

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5
Q

What is the function of the peripheral nervous system?

A

Transmits messages, via neurons, to and from the CNS

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6
Q

What is the structure of the PNS?

A

SNS and ANS (parasympathetic and sympathetic systems)

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7
Q

What is the function of the endocrine system?

A

Instructs glands to release hormones towards target organs

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8
Q

What is the structure of the endocrine system?

A

Glands (e.g: thyroid, pituitary) and hormones (thyroxine, adrenaline)

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9
Q

What is the function of the ANS?

A

Transmits info to and from internal organs- does so involuntarily and has 2 divisions

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10
Q

What is the function of the SNS?

A

Transmits info from the receptor cells to the CNS, and receives info from the CNS to muscles to cause action

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11
Q

What is the sympathetic state?

A

A state of fight or flight

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12
Q

What is the parasympathetic state?

A

A state of rest and digestion

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13
Q

What happens in the sympathetic state?

A
  • Increases heart rate
  • Increases breathing rate
  • Dilates pupils
  • Inhibits digestion
  • Inhibits saliva production
  • Contracts rectum
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14
Q

What happens in the parasympathetic state?

A
  • Decreases heart rate
  • Decreases breathing rate
  • Constricts pupils
  • Stimulates digestion
  • Stimulates saliva production
  • Relaxes rectum
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15
Q

What are glands?

A

Organs in the body that synthesise substances such as hormones

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16
Q

What are hormones?

A

Chemical substances that circulate in the bloodstream and only affect target organs

17
Q

How is fight of flight triggered?

A
  • Hypothalamus releases releasing hormone
  • Pituitary gland releases stimulating hormone
  • Adrenal gland releases adrenaline and cortisol
  • Triggers sympathetic state in ANS
18
Q

What is the function of the brain?

A

The centre of all conscious awareness

19
Q

What is the function of the spinal cord?

A

Passes messages to and from the brain, and connects nerves to the PNS

20
Q

What does adrenaline trigger?

A

Physiological changes in the body, during a time of fight or flight

Psychology- Biopsychology (9 decks)

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