- what cells are responsible for skin color?
- what are the specialized cells called that causes older cells to harder?
- which are characteristics of local potentials? select all that apply
- this picture illustrates that when a stimulus strength (weight) and stretch increase at a sensory fiber, the firing frequency of the neurons increase. which term refers to the conversion of stimulus information into a meaning pattern of action potentials?
- Since neurons generally do not undergo mitosis after reaching maturity, which organelle do they lack?
- this is the most common structural type of neuron. it contains one axon and multiple dendrites, and it is classified as a(n) ______ neuron
- which type of memory allows us to hold a thought long enough to take action on it?
- the opposite of facilitation is presynaptic _______. this is mechanism in which one presynaptic neuron suppresses another one
- which two organ systems are primarily responsible for coordinating the other bodily systems so as to maintain homeostasis? select two answers from the list below.
- Some neurotransmitters can be either excitatory or inhibitory effects depending on which of the following?
- A shift in membrane voltage to a value that is more negative than the resting membrane potential is called
- the Schwann cell coils around the nerve fiber, finally ending with a thick outermost coil called neurilemma. external to the neurilemma there is a thin sleeve of fibrous connective tissue called the _______
- the upward phase of a sit up is an example of ____ for the rectus abdominus
- the motor division of the PNS is further subdivided into the ________ motor division that carries signals to the skeletal muscles and the _______ motor division (also known as the autonomic nervous system), which carries signals to glands, cardiac muscle, and smooth muscle
- which term refers to the voltage difference (electrical potential) across the plasma membrane of a neuron when it is at rest and not engaged in electrical signaling?
- the visceral motor division of the PNS is also called the autonomic division. which of the following are functions of this division? select all that apply
- an axon lacking a myelin sheath is said to be...
- which ion has the greatest influence on the resting membrane potential of most neurons?
- the sensory and motor divisions of the peripheral nervous system are further split into which two subdivisions?
- at a synapse, the neuron that releases neurotransmitter is the _________________ neuron.