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Definition
| Large organ composed of billions of nerve cells called neurones. |
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| Why human dominate species |
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Definition
| Due to their large brain capacity and complex level of internal development and organisation. |
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Definition
| Largest part of brain with deep cleft between 2 halves of cerebral hemispheres responsible for conscious thought highly convoluted more room foe cell bodies and interconnection between neurones |
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Definition
| Receives impulses from sensory receptors |
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Definition
| receives impulses from the sensory receptors |
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Definition
| sends impulses to skeletal muscles |
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Definition
| includes various parts of cerebrum responsible for communicating speech such as vocabulary memory lip tongue vocal cord control |
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Definition
| close to sensory area analyses incoming sensory impulses in light of learning and experience |
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Definition
| Controls the right hand side. |
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Term
| Right cerebral hemisphere |
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Definition
| Controls the left hand side |
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Definition
| Large bundle of nerve fibres connection both the left and right cellbral hemisphere and allows information to transfer from one to the other. |
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Definition
| The Cerebrum is folded in on its self and this greatly increase surface allowing more cell bodies this maximums the transmitting messages between neurone. |
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Definition
| An imaginary human figure whose body parts have been drawn in proportion to their mobility and fine motor control. Lips, hands and tongue. |
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Definition
| Each hemispheres control opposite side of the body so damage to one area would mean the opposite side of the body would be affected. |
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Definition
| made up of central nervous system and peripheral |
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Definition
| Is composed of brain and spinal cord motor neurones carry impulses from CNS to muscles and glands |
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Term
| Peripheral nervous system |
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Definition
| Is made up of sensory neurones carrying impulses from receptor in CNS and consist of somatic and automatic nervous system. |
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Term
| Somatic nervous system (PNS) |
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Definition
| Deals with functions under conscious control walking speaking |
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Term
| Automatic nerve system (PNS) |
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Definition
| Deals with automatic functions e.g. heart rate. Is divided into sympathetic and parasympathetic |
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Term
| peripheral nervous system sensory neurone |
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Definition
| carries impulses from receptor to Central nervous system |
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Term
| perpheral nervous system motor neurone |
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Definition
| carries impulses from central nervous system to muscle and glands |
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Term
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Definition
| Have opposite effects e.g. sympathetic and parasympathetic |
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Term
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Definition
| Sensory, Association ,Motor |
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Term
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Definition
| carries electric impulses from one part of body to another, made up of bundle nerve fibres. |
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Term
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Definition
| Has nucleus and cytoplasm which contain organelle and mitochondria to generate energy |
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Term
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Definition
| Fibres of a neurone which carry impulse towards the cell body |
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Term
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Definition
| Long fibres covered by myelin sheath which carry impulse away from cell body |
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Definition
| A sheath of fatty material which forms an insulating jacket around fibres and composed if tightly packed double layers of plasma membrane |
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Definition
| Name given for nerves fibre lacking myelin |
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Definition
| Tiny gap between neurones impulses can't cross the synapse without the present of neurotransmitter |
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Term
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Definition
| Is neurone axon, synaptic knob ending before the synapse. It contains neurotransmitters, mitochondria and other cell organelles. |
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Definition
| the ending of neurone that contains receptor sites for neurotransmitters and contain enzymes to reactive neurontransmitter. |
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Term
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Definition
| space between the presynaptic and postsynaptic endings. |
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Term
| Neurotransmitter after impulse |
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Definition
| The transmitter is broken down into an non active product by and enzymes present in the postsynaptic membrane: -Acetylcholine âacetlochlinesterase ânon active products |
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Term
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Definition
| Effect of receptor site in post synaptic membrane response to the neurotransmitter by having and excitatory effect which increases the membranes chance of reaching threshold and transmitting a nerve impulse |
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Term
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Definition
| Membrane response to the neurotransmitter by having and inhibitor effect which increases the membranes chance of reaching threshold and transmitting a nerve impulse. |
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Term
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Definition
| Have short dendrite in contact with receptors these merge to form a myelinated fibre which carries impulses to the cell body and along myelinated axon and connection with neurone in CNS |
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Term
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Definition
| Have dendrites in contact with sense receptor theses merge to form a mylinated fibre which carries impulses to the cell body a short axon and connection with neurones in the CNS |
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Term
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Definition
| Found only in the CNS where their many dendrites form contacts with one another. These form complex network of interconnection that allow the system to carry out its incredible functions and to learn remember and adapt the way it does. |
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Term
| Name of Neurotransmitters |
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Definition
| Acetylcholine and noradrenalin |
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Term
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Definition
| visual receptor present in retina contains pigment which is not sensitive to light, needs dim light to fire off impulse and release pigment. |
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Definition
| visual receptor present in retina contains pigment whcih is sensitive to light need bright light to fire off impulse and release pigment. |
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Term
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Definition
| have short dendrites in contact with other neurones in CNS, a cell body and a long myelinated fibres which carries impulses to the cell body. a short axon and connection with neurone in the CNS |
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Term
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Definition
| have dendrites in contact with sense receptors these merge to form a myelinated fibre |
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Term
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Definition
| found only CNS where many dendrite form contacts with one another. form complex network allow system to carry function of learning and remembering. |
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