BIOPSYCHOLOGY - Divisions of the Nervous System

Question 1

fWhat is the Nervous System

Answer 1

specialised network of cells in the human body

our primary internal communication system

Question 2

What are the two main functions of the Nervous System

Answer 2

• collect, process and respond to info in the enviro
• co-ordinate workings of diff organs and cells in body

Question 3

What is the Nervous System divided into

Answer 3

CNS
PNS

Question 4

What does the CNS provide

Answer 4

complex processing

Question 5

What happens in teh brain

Answer 5

conscious and most unconscious processing

Question 6

the brain is the centre of

Answer 6

all conscious awareness

Question 7

what is the outerlayer of teh brain called

Answer 7

cereberal cortex

Question 8

cereberal cortex only found in

Answer 8

mammals

Question 9

the brain is what in humans

Answer 9

highly developed

Question 10

the brain distinguishes our ….. from

Answer 10

higher mental functions from those of other animasl

Question 11

onlya few living creatures dont have brains name three

Answer 11

jellyfish
sponges

Question 12

brian is divided into

Answer 12

two hemispheres

Question 13

Descrobe spinal cord

What it recieve and trnasmit,

what does it connect

what is it repsonsbibel or

Answer 13

-recieves and transmits info to and from brain and body
-connects nerves to PNS
-responsible for reflex actions e.g puling hand from a hot plate

Question 14

What does PNS do

Answer 14

transmits messages
via millions of neurons
to and from CNS

Question 15

sensory neurons are also now as

Answer 15

afferent neurons

Question 16

Motor neurons are also known as

Answer 16

efferent neurons

Question 17

What do sensory neurons do

Answer 17

carry info from sensory receptors to the CNS

Question 18

What do motor neurons do

Answer 18

transmit info away from the CNS to muscles of the body

Question 19

The peripheral nervous ysstem is spilt inot

Answer 19

Somatic NS
Autonomic NS

Question 20

What does teh Somatic NS do + describe it
what does it control
what does it recieve and from where
what type of system is it .. so

Answer 20

-controls skeletal muscles for movement

-recieves info from sensory receptors

-voluntary system so under conscious control e.g you decide to move your arm

Question 21

What does the Autonomic NS do

what does it control
what does it govern
what type of system is it… so

Answer 21

-controls internal organs and glands

-governs vital functions i.e heart rate

-involuntary system,not conscious i.e don’t decide to increase your heart rate/

Question 22

What is the ANS split into

Answer 22

parasympathetic NS
sympathetic NS

Question 23

What are features of Sympathetic ANS

when does it activate
what does it release
what does it in/decrease

Answer 23

Activates in stress resposne (i.e flight/fight)

releases noradrenaline

increases bodily activities e.g HR

Question 24

What are features of the Parasympathetic ANS

when does it activate
what does it release
what does it in/decrease

Answer 24

Activates in rest (rest&digest e.g)

releases acetycholine

decreases bodily activities e.g HR,

Question 25

Homeostasis

Answer 25

regulation of the internal environment

Question 26

in homesotatis , normal conditions how are teh para/sympathetic systems

Answer 26

in balance and this is maintaining homeostasis

Question 27

What does the endocrine system workalongside

Answer 27

nervous system

Question 28

define endocrine system

Answer 28

one of bodys major info systems that instructs glands to release hormones directly into the bloodstream

Question 29

what is a gland

Answer 29

organ in the body that synthesises substances such as hormones

Question 30

what are hromones

Answer 30

biochemical subtance that circulates in the blood and affecs target orgnas

Question 31

hormones are produced in what type of quantities but...

Answer 31

large quanitites but disappear very quickly

Question 32

hormone effects aree very

Answer 32

powerful

Question 33

endocrine system works alongside nervous system to

Answer 33

control vital functions in the body

Question 34

does the endocrine system work slower of faster than nervous syste,

Answer 34

ES works slower than NS

Question 35

Even though endocrine system works slower than NS describe teh effects

Answer 35

widespread and powerful effects

Question 36

give an example of a gland

Answer 36

thyroid gland

Question 37

various glands such as thyroid gland produce

Answer 37

hormones

Question 38

what are hormones secreted into

Answer 38

bloodstream

Question 39

hormones secreted into the BS and affect any cell ...

Answer 39

in body that has receptor for that particular hormone

Question 40

most hormones affect cells in more than

Answer 40

one body organ

Question 41

most hormones affect cells in more than one body organ leading to

Answer 41

many diverse and powerful responeses

Question 42

thyroid gland produces hormone ...

Answer 42

thyroxine

Question 43

how does thyroxine affect cells int eh heart

Answer 43

increases heart rate

Question 44

how does thyroxine affect cells thoughout the body ... and what does this affect

Answer 44

though increasing metabolic rates growth rates

Question 45

key endocrine gland

Answer 45

pituitary gland

Question 46

where is pituitary gland and what is it known as

Answer 46

brain master gland

Question 47

why is pituitary gland also known as master gland

Answer 47

ctrls release of hormones from all otehr endocrine glands in body

Question 48

state all 8 endocrine glands from bottom to top

Answer 48

hypothalamus pituitary gland thyroid parathyroid andrenal pancreas ovaries (f) testes(m)

Question 49

often endocrine system and nervous system work in

Answer 49

parrallel with each other

Question 50

when would ES and NS work in parralel with each other

Answer 50

stressful event q

Question 51

what happens when stressor percieved

Answer 51

hypothalamus activates pituitary gland triggering activity in sympathetic branch of ANS ANS changes from normal resting state to (parasympathetic state) psyhcologically aroused sympathetic state

Question 52

ADRENALINE after ans switches to sympathetic state what happens

Answer 52

adrenaline released

Question 53

ADRENALINE where is adrenaline relased from

Answer 53

adrenal medulla

Question 54

ADRENALINEafter adrenaline's released waht does it trigger and what does this create

Answer 54

phsyiologicla changes in the bidy (e.g increased heart rate) creating physiological arousal necessary for flight/fight repsones

Question 55

ADRENALINE give example of adrenaline triggering physiologicla changes

Answer 55

increased HR

Question 56

IMMEDIATEAND AUTOMATIC In stressful event describe how the steps happen

Answer 56

in an instant as soon as threat detected

Question 57

IMMEDIATEAND AUTOMATIC give an exmaple of body repsonding in instant during a stressfulevent

Answer 57

heart rate increases when you xp fright

Question 58

IMMEDIATEAND AUTOMATIC describe response and reacton our body maes

Answer 58

acute repsones automatic reaction

Question 59

how does the heart rate change in flight or fight with para symp and symp system

Answer 59

parasymp - decrease symp - increase

Question 60

why does HR increase in fight/flight

Answer 60

to push blood to the muscles, heart, and other vital organs so enough energy and oxygen to confront or flee from threat

Question 61

how does BR change in fight/flight with para and symp system

Answer 61

parasymp - decreases symp - increases

Question 62

why does BR increase in fight/flight

Answer 62

increase oxygenated blood to muscles to help fight/flight ??

Question 63

what happens to gut in F/F in symp and parasymp

Answer 63

symp - slows digestion parasymo increases digestion

Question 64

what happens to salivary glands in ff in P/S

Answer 64

parasymp - increase saliva production symp - decrease saliva production

Question 65

why do slaivary glands decrease saliva prod in fight/flight

Answer 65

becuase beginning of digestion and we dont need to digest so to save energy stops the process

Question 66

what does liver do in f/f in P/S

Answer 66

Psymp stimulates glucose production Symp - stim bile production why

Question 67

what does bladder do in f/f in P/S

Answer 67

Psymp - inhibs urination Symp - stims urination why

Question 68

what do eyes do in f/f in P/S

Answer 68

P - constricts pupils S - dilaltes pupils to let more light get into eye to help us see better to react effectivley

Question 69

What do lungs do in f/f in P/S

Answer 69

s- dilates bronchi p - constricts bronchi to intake more O2 - expand + ask if need to kno w

Question 70

what os acronym to remeber changes that take place in f/f

Answer 70

Girrafes Shouls Have Longer Backs and Even Legs

Question 71

PARASYMPA ACTIONS what happens when threat has passed

Answer 71

Parasymp returns body to resting state

Question 72

PARASYMPA ACTIONS how does Parasymp brnach of ans work with symp branch

Answer 72

in oppostion

Question 73

PARASYMP ACTOINS how would you describe parasymp actions towards symp

Answer 73

antagonistic

Question 74

PARASYMP ACTOINS what does para symp acts as and why

Answer 74

brake to reduce activities of body that were increased by actions of symp brnach

Question 75

PARASYMP ACTOINS parasymp acting as brake to reduce act of body increased by activities of symp brnach lknown as

Answer 75

rest and digest repsones

Question 76

to sum up what does symo do

Answer 76

prepares body to expend energy for f/f