biology unit 3

Question 1

what’s the 2 parts of the nervous system

Answer 1

central nervous system and peripheral

Question 2

what does the central nervous system control

Answer 2

brain and spinal cord

Question 3

what does the peripheral nervous system do

Answer 3

carry information to or from the CNS

Question 4

what can the peripheral nervus system get spilt into

Answer 4

stomatic and autonomic

Question 4

what is the stomatic responsible for

Answer 4

voluntary movement and conscious perception

Question 5

what is the autonomic responsible for

Answer 5

involuntary control such as breathing

Question 6

what can the autonomic be further split into

Answer 6

sympathetic and parasympathetic

Question 7

what is a receptors

Answer 7

detect a stimuli and produce electrical impulse

Question 7

what is an effectors

Answer 7

part of the body that produce a response

Question 8

what does sympathetic do

Answer 8

fight or flight. increase energy prepare for action

Question 8

what does parasympathetic do

Answer 8

rest and digest calm state

Question 9

name the 3 neural pathway

Answer 9

converging, diverging and reverberating

Question 9

describe converging pathway

Answer 9

several to one.

Question 9

describe diverging pathway

Answer 9

one to several. fine motor skills

Question 10

describe reverberating pathway

Answer 10

pathway linked with earlier neurons. breathing

Question 11

what does the medulla control

Answer 11

heart rate and breathing

Question 11

what does the cerebrum control

Answer 11

balance and movement

Question 12

what does the hypothalamus control

Answer 12

temperature and water balance

Question 13

what does the cerebral cortex control

Answer 13

sensory motor and association

Question 14

names the middle part of the brain that sends info from one side to another

Answer 14

corpus collosum

Question 14

what traits do the cerebral cortex involved in

Answer 14

personality, imagination and intelligence

Question 15

describe sensory memory

Answer 15

visual and auditory information for a few seconds

Question 16

describe short term memory

Answer 16

about 7 pieces of info for about 30 seconds

Question 17

describe long term memory

Answer 17

unlimited capacity for a very long time

Question 18

how can memory be lost

Answer 18

displacement or decay

Question 19

describe displacement

Answer 19

older information pushed out by new info

Question 20

describe chunking

Answer 20

braking larger information into smaller pieces

Question 21

how can you encode memories into long term

Answer 21

rehearsal, organization and elaboration

Question 22

describe rehearsal

Answer 22

going over and over information

Question 23

describe elaboration

Answer 23

adding further information or meaning

Question 23

describe organistation

Answer 23

placing organization into categories or groups

Question 24

what is contextual cues

Answer 24

when your given a signal such as a time or place to remember a memory

Question 25

where is myelin sheath produced

Answer 25

glial cells

Question 25

what is myelination

Answer 25

process of myelin developing around the axon. from birth to adolescence

Question 25

what does myelin sheath do

Answer 25

increases speed of reaction. it also helps with co-ordination and balance.

Question 26

where are neurotransmitters reach

Answer 26

dendrites

Question 26

where do neurotransmitters diffuse across

Answer 26

synaptic cleft

Question 26

what is a chemical messenger also known as

Answer 26

neurotransmitter

Question 27

what do receptors on second neuron do

Answer 27

bind to specific neurotransmitter

Question 28

where are neurotransmitters found inside

Answer 28

vesicles

Question 28

why are neurons removed

Answer 28

to prevent continuous stimulation

Question 29

describe re-uptake

Answer 29

reabsorbed to presynaptic cleft

Question 30

describe enzyme degradation

Answer 30

neurotransmitter broken down into smaller in active product

Question 31

explain stimuli threshold

Answer 31

weak stimuli means not enough to generate an impulse

Question 31

what are inhibitory

Answer 31

decreases contraction

Question 31

what is excitatory

Answer 31

increases contraction

Question 32

what do endorphins do

Answer 32

reduce intensity of pain

Question 32

what increases endorphin production

Answer 32

exercise, eating , sex

Question 33

what increases dopamine production

Answer 33

eating when hungry

Question 34

describe the reward pathway

Answer 34

we engage in behavior that is beneficial such as eating when hungry

Question 35

describe agonistic drugs

Answer 35

mimic neurotransmitter

Question 35

describe antagonistic drugs

Answer 35

block neurotransmitters from binding to receptors

Question 36

example of antagonistic drugs

Answer 36

cocaine

Question 36

example of agonistic drugs

Answer 36

paracetamol

Question 37

what do agonistic drugs do to receptors

Answer 37

decrease number and sensitivity. need to take more to get he feeling.

Question 38

what do antagonistic drugs do receptors

Answer 38

increase number and sensitivity. crave more and more

Question 39

what do recreational drugs effect

Answer 39

mood, perception, behavior and awareness

Question 40

what do histamine do

Answer 40

cause vasodilation increase blood flow

Question 40

what do mast cells produce

Answer 40

histamine

Question 41

what is a phagocyte

Answer 41

white blood cells that engulf and digest pathogens

Question 42

what is phagocytosis

Answer 42

phagocytes recognizing pathogens

Question 42

what are cytokins

Answer 42

attract more white blood cells