The term âshoulder instabilityâ is used to refer to the inability to maintain the humeral head in the glenoid fossa.The ligamentous and muscle structures around the glenohumeral joint, under non-pathological conditions, create a balanced net joint reaction force. The relevant structures are listed below.
Definition of synapse. : the point at which a nervous impulse passes from one neuron to another.
The synapse is a specialized structure that allows one neuron to communicate with another neuron or a muscle cell. There are billions of nerve cells in the brain and each nerve cell can make and receive up to 10,000 synaptic connections with other nerve cells. Also, the strength of the synapse is modifiable.