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Describe the processes that occur at a cholinergic synapse to allow signal transmission

When an action potential arrives at the end of a presynaptic neurone, it causes the uptake of calcium ions through ion channels in the wall of the synapse. This influx of calcium ions causes vessicles of ace...
TD
Answered by Tara D. • Biology tutor
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What are receptors?

Receptors are a group of specialised cells that are used by the body to detect different stimuli (changes in the environment). Receptors are most common in sensory organs like the eyes, ears and the skin. Ad...
KS
Answered by Kirsty S. • Biology tutor
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Describe the events that take place at the synapse that enable transmission of a nerve impulse.

An action potential arrives at the synapse, triggering Ca2+ channels to open. This in turn triggers vesicles holding neurotransmitter to fuse with the presynaptic membrane, releasing the neurotransmitter int...
SA
Answered by Shrinivas A. • Biology tutor
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What do arteries veins and capillaries do?

Arteries, veins and capillaries are the three types of blood vessels in our bodies. We need blood vessels to carry our blood around the body. The importance of blood Blood has to be circulated around the bod...
CM
Answered by Charlotte M. • Biology tutor
33448 Views

What is the sliding filament theory of muscle contraction?

There are two main muscle filaments in muscle fibres: Actin and myosin filaments . Actin filaments are thin and have binding sites for the globular heads of myosin filaments. Myosin filaments are thick and f...
KF
Answered by Kasia F. • Biology tutor
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