Peak temperatures in December in Hawaii can reach levels of up to 26Â°C on average. However, in 1988, Hawaii recorded its highest ever temperature in December, where the thermometer reached an incredible 31Â°C. There is no chance of a white Christmas on the beaches in Hawaii, unless you include the whiteness of the sand.
2) Synaptic Cleft: This is the narrow gap between the axon terminal of the presynaptic neuron, and the post-synaptic membrane of another excitable cell. It is filled with extracellular fluid. 3) Postsynaptic membrane: The membrane across the synaptic cleft is called the postsynaptic membrane.) A nerve impulse reaches the axon terminal of a presynaptic neuron; the membrane is depolarised by an action potential. 2) Depolarisation of the axon terminal during the action potential causes voltage sensitive calcium ion channels to open in the terminal knob.
Summary. â¢ Each skeletal muscle cell is individually stimulated by a motor neuron. â¢ The neuromuscular junction is the place where the terminal portion of a motor neuron axon meets a muscle cell membrane, separated by a synaptic cleft.â¢ An action potential arriving at the axon terminal brings about the release of acetylcholine, which leads to depolarization of the motor end plate.age 1. Introduction. â¢ Motor neurons stimulate muscle cells to contract at the neuromuscular junction. Page 2. Goals. â¢ To examine the structure of a neuromuscular junction. â¢ To understand the sequence of events occurring at the neuromuscular junction following a stimulus. Page 3.