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.
synÂ·apse. n. The junction across which a nerve impulse passes from an axon terminal to a neuron, muscle cell, or gland cell. intr.v. synÂ·apsed, synÂ·apsÂ·ing, synÂ·apsÂ·es. 1. To form a synapse.2.he junction across which a nerve impulse passes from an axon terminal to a neuron, muscle cell, or gland cell. intr.v. synÂ·apsed, synÂ·apsÂ·ing, synÂ·apsÂ·es. 1. To form a synapse. 2.