Show:
Functions
Nervous System
Classification of Neurons
Neuromuscular Junction
Membrane Potentials
100
Changes in environmental stimulus
What is sensory input
100
Brain and spinal cord
What is Central Nervous System
100
Have three or more dendrites. Common in CNS
What is Multipolar neurons
100
Which of the following statements best describes the membrane situation in the resting state in the neuron?
What is All the voltage-gated Na+ and K+ channels are closed.
100
Decreased membrane potential due to inside becoming less negative
What is Depolarization
200
Process information and determine response
What is Integration
200
Cranial nerves (to and from the brain) and spinal nerves
What is Peripheral Nervous System
200
Has 1 process emerging from the cell body in a T-shape
What is unipolar neurons
200
Which of the following events is NOT involved in the transfer of information across a chemical synapse?
What is Ions flow directly from one neuron to the next.
200
Increased membrane potential due to inside becoming more negative
What is Hyper-polarization
300
Uses muscles or glands to respond to sensory input
What is Motor output
300
Responsible for sensory input to CNS.
What is Peripheral Nervous System
300
Have 2 processes, a dendrite and a axon. Found in the eye and nose.
What is Bipolar neurons
300
A potential of -90 mV is considered __________.
What is hyperpolarized
300
Short lived changes in membrane potential
What is Graded Potentials
400
The sensory, or afferent, division of the peripheral nervous system transmits information from the __________ to the CNS.
What is skin
400
The command center, responsible for integration
What is Central Nervous System (CNS)
400
Neurons bring info. to ganglia of PNS
What is Afferent or sensory
400
During which phase of an action potential are voltage-gated K+ channels open, while voltage-gated Na+ channels are closed?
What is repolarizing phase
400
Graded potential due to energy exciting a sensory neuron
What is receptor potential
500
The interior of a nerve cell has a slight excess of negative charge because __________.
What is potassium diffuses out of the cell
500
Which of the following electrical events occurs when a certain threshold is reached?
What is Action potential
500
Neurons carry ap's away from CNS
What is Efferent or motor
500
Which of the following membrane ion channels in the neuron are always open?
What is leakage channels
500
Due to neurotransmitter stimulating neuron beyond synapse
What is post- synaptic potential