In order to trigger the release of neurotransmitter from a neuron terminal, calcium ions
A. exit the synaptic knob through diffusion.
B. bind to proteins on the surface of synaptic vesicles.
C. penetrate the synaptic vesicles and bind to molecules of neurotransmitter.
D. bind to ion channels on the neuron membrane and cause them to open for the transmitter.
B
You might also like to view...
Match the structure to its description.
1. maintain muscle tone at rest through tonic activity 2. have afferent neurons that bring information to the CNS 3. excite both alpha and gamma motor neurons 4. found at the junction of tendons and muscle fibers 5. have gamma motor neurons that innervate internal fibers 6. eventually synapses with alpha motor neurons that innervate extrafusal muscle fibers A. muscle spindles B. Golgi tendon organs C. both
A connective tissue on the surface of muscles (that extends onto the tendon and bone) is known as
A) fascia. B) perimysium. C) endomysium. D) connective to muscle tissue.
Overfunctioning sudoriferous glands produce excessive amounts of which of the following?
A) oil B) sweat C) fat D) white blood cells
During conduction by local current flow, current flows locally between the active and adjacent inactive area of the cell membrane, thereby decreasing the potential in the inactive area to threshold
Indicate whether the statement is true or false