What is purkyne tissue?
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Muscle fibres from bundle of His which carries waves of electrical activity into
the muscular walls of the left and right ventricle causing them to contract
simultaneously from the bottom up
Explain the movement and affects of indoleacetic acid in plants
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, Moves around to control tropism- moves by diffusion and active transport
over short distances and via the phloem in long distances.
This results in different concentrations leading to uneven growth,
What are myofibrils?
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Cylindrical organelles in muscle fibres made up of proteins and specialised for
contraction
What is visual activity?
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The ability to tell points apart that are close together
Action potentials are all one size so the strength of the stimulus is measured by what?
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The frequency of action potentials
What affect do opioids have?
,Give this one a try later!
They block calcium ion channels in the presynaptic neurone meaning fewer
vesicles fuse with the membrane so less neurotransmitter is released
What does the autonomic nervous system control and what 2 systems does it split into?
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Unconscious activities such a digestion
Sympathetic and parasympathetic nervous systems
What is the order of nervous communication including neurones
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Stimulus > receptors > sensory neurones> CNS > motor neurone > effectors >
response
What does an excitatory neurotransmitter do?
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, Depolarises the postsynaptic membrane making it fire an action potential if
the threshold is reached
How do auxins work?
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Produced in tips of shoots and diffuse backwards to stimulate the cell just
behind the tips to elongate
What are antagonistic pairs and which is the agonist and antagonist?
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Muscles that work together to move bone
Agonist - contracting muscle
Antagonist - relaxed muscle
What is the normal concentration of glucose in the blood and what organ monitors this?
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90mg per 100cm3 of blood - pancreas
Give this one a try later!
Muscle fibres from bundle of His which carries waves of electrical activity into
the muscular walls of the left and right ventricle causing them to contract
simultaneously from the bottom up
Explain the movement and affects of indoleacetic acid in plants
Give this one a try later!
, Moves around to control tropism- moves by diffusion and active transport
over short distances and via the phloem in long distances.
This results in different concentrations leading to uneven growth,
What are myofibrils?
Give this one a try later!
Cylindrical organelles in muscle fibres made up of proteins and specialised for
contraction
What is visual activity?
Give this one a try later!
The ability to tell points apart that are close together
Action potentials are all one size so the strength of the stimulus is measured by what?
Give this one a try later!
The frequency of action potentials
What affect do opioids have?
,Give this one a try later!
They block calcium ion channels in the presynaptic neurone meaning fewer
vesicles fuse with the membrane so less neurotransmitter is released
What does the autonomic nervous system control and what 2 systems does it split into?
Give this one a try later!
Unconscious activities such a digestion
Sympathetic and parasympathetic nervous systems
What is the order of nervous communication including neurones
Give this one a try later!
Stimulus > receptors > sensory neurones> CNS > motor neurone > effectors >
response
What does an excitatory neurotransmitter do?
Give this one a try later!
, Depolarises the postsynaptic membrane making it fire an action potential if
the threshold is reached
How do auxins work?
Give this one a try later!
Produced in tips of shoots and diffuse backwards to stimulate the cell just
behind the tips to elongate
What are antagonistic pairs and which is the agonist and antagonist?
Give this one a try later!
Muscles that work together to move bone
Agonist - contracting muscle
Antagonist - relaxed muscle
What is the normal concentration of glucose in the blood and what organ monitors this?
Give this one a try later!
90mg per 100cm3 of blood - pancreas
