The state during which a neuron contains more negatively charged ions inside the cell than outside the cell and is not firing is referred to as the__.
Resting potential
During action potential, the electrical charge inside the neuron is _ the electrical charge outside the neuron.
positive compared to
"All or none" is the principle stating that__.
A neuron either fires or does not fire.
The branches at the end of the axon are called__.
axon terminals
A chemical found in the synaptic vesicles that, when released, has an effect on the next cell is called a__.
neurotransmitter
The term neurotransmitter refers to___.
A chemical found in the synaptic vesicles that is released into the synapse
______are holes in the surface of the dendrites or certain cells of the muscles and glands that are shaped to fit only certain neurotransmitters
Receptor sites
Areas on the neuron's surface and other cells that are sensitive ti neurotransmitters
Receptor sites
_____neurotransmitters make it more likely that a neuron will send its message to other neurons, whereas_____neurotransmitters make it less likely that a neuron will send its message.
Excitatory; inhibitory
Your teacher asks you to describe the sequence of parts of a neuron that the impulse travels during neural conduction. Which of the following sequences will you offer?
dendrites, soma, axon, synaptic knob
The brain and spinal cord are two components of the __.
central nervous system
The central nervous system consists of__.
The brain and spinal cord are the two most basic components of the central nervous system.
Which part of the nervous system takes the information received from the senses, makes sense out of it, makes decisions, and sends commands out to the muscles and the rest of the body?
That is the responsibility of the brain.
The long bundle of neurons that carries messages to and from the body to the brain and is responsible for very fast, lifesaving reflexes is called the__.
spinal cord
The division of the nervous system that allows the brain and the spinal cord to communicate with the sensorysystems of the eyes, ears, skin, and mouth, and allows the brain and spinal cord to control the muscles and glands ofthe body is called the__.
peripheral nervous system
The peripheral nervous system consists of the__and the__nervous systems
The peripheral nervous system consists of the autonomic and somatic nervous systems.
Voluntary muscles are controlled by the__nervous system.
somatic
The subdivision of the peripheral nervous system that is made up of all nerves carrying messages from the senses to the central nervous system and all nerves carrying messages from the central nervous system to skeletal muscles is called the
This describes the somatic nervous system.
Every deliberate action you make, such as pedaling a bike, walking, scratching, or smelling a flower, involves neurons in the__nervous system.
The somatic nervous system controls voluntary muscle movement.
As she walks out of the living room, Gloriann turns out the light. In this example, Gloriann's____is active.
somatic nervous system
