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B6 Quiz
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Perguntas do quiz (14)
1Label the reflex arc
- AReceptors
- BEffectors
- CStimulus
- DCNS
2A reflex is fixed response to a specific simple stimulus. They are extra rapid responses which bypass the brain.
- AVerdadeiro
- BFalso
3Choose the correct facts about neurons:
- AWhen stimulated they send electrical impulses.
- BWhen stimulated they send hormones around the body.
- CThe gap between neurons is called a synapse.
- DImpulses travel from one neuron to the next across synapses.
- ENeurons are only found in the brain.
4A vesicle is...
- Athe connection between two neurons
- Ba package/group of chemicals in the presynaptic neuron
- Cthe gap between the presynaptic and postsynaptic neurons
5Impulses can only travel in one direction across a synapse.
- AVerdadeiro
- BFalso
6Some drugs [blank_start]stop[blank_end] the impulse from passing across the [blank_start]synapse[blank_end]. Drugs such as curare - the South American plant [blank_start]toxin[blank_end] used in arrow poison - do this. They cause complete [blank_start]paralysis[blank_end], and even stop an animal or person breathing.
Serotonin is a chemical released in the brain that gives feelings of [blank_start]pleasure[blank_end]. Lack of this chemical can lead to feelings of depression. Prozac is an anti-[blank_start]depressant[blank_end] drug that causes serotonin [blank_start]concentration[blank_end] to build up in synapses. The Prozac molecule blocks the [blank_start]reuptake[blank_end] of serotonin from a synapse.
Beta blockers are drugs that can help people who suffer from angina (chest pain due to a heart condition). They work by blocking the [blank_start]receptor[blank_end] sites on heart muscle cells so impulses from nerves which would [blank_start]speed[blank_end] up the heart are [blank_start]prevented[blank_end] from passing to the heart.- Astop
- Btoxin
- Cparalysis
- Dsynapse
- Epleasure
- Fdepressant
- Gconcentration
- Hreuptake
- Ireceptor
- Jspeed
- Kprevented
7Ecstasy (also called MDMA) is a drug that blocks the serotonin receptor sites in the synapses in the brain. This prevents the serotonin from being absorbed by the receptor molecules. As a result, the level of serotonin in the synapse increases. This produces a feeling of wellbeing.
- AVerdadeiro
- BFalso
8What scientist famously conditioned dogs? Explain how he did it.
- APavlov
- BEinstein
- CNewton
9What methods have scientists used to map the brain?
- AStudying injuries to the brain and the effects.
- BPassing electricity over the surface of the brain and recording reactions
- CMRI Scans
- DRemoving sections.
- EDestroying neutrons.
10The cerebral cortex is the part of the brain responsible for intelligence, language, memory and consciousness.
- AVerdadeiro
- BFalso
11The human brain consists of [blank_start]billions[blank_end] of neurons. These neurons are [blank_start]connected[blank_end] together to form even more billions of different [blank_start]pathways[blank_end]. Whenever we have a new [blank_start]experience[blank_end], a new pathway in the brain is used. Each new experience [blank_start]changes[blank_end] our behaviour - this is called [blank_start]learning[blank_end].
If the experience is repeated, or the stimulus is very [blank_start]strong[blank_end], more nerve [blank_start]impulses[blank_end] are sent along the new pathway. This [blank_start]reinforces[blank_end] the learning process and explains why repetition helps us to learn new things. Repetition strengthens the [blank_start]connections[blank_end] between neurons and makes it [blank_start]easier[blank_end] for impulses to travel along the pathway.- Abillions
- Bconnected
- Cpathways
- Dexperience
- Echanges
- Flearning
- Gstrong
- Himpulses
- Ireinforces
- Jconnections
- Keasier
12Define 'memory'.
- ABeing able to retrieve information from our brain to use whenever we want it. It is the storage and retrieval of information.
- BInformation stored for a long period of time.
- CThe process of forming new neuron pathways
13Label the multistore model of memory:
- AStimuli
- BSensory Memory Store
- CShort term memory
- DLong term memory
- Ememory forgotten
- Frehersal
14It is important to evaluate models to make sure the data fits with current theories.
- AVerdadeiro
- BFalso
Informações
- Descrição
- GCSE Biology (B6 - Brain and Mind) Quiz sobre B6 Quiz, criado por Leah Firmstone em 25-11-2015.
- Autor
- Leah Firmstone
- Idioma
- English
- Visualizações
- 7
- Etiquetas
- Avaliação
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