Quiz Flashcards
The nervous system
- monitors internal and external stimuli
- transmits information in the form of action potentials
- interprets or assesses information
- maintains homeostasis
Which system is responsible for problem-solving skills?
Central Nervous System
The CNS includes
spinal cord
The Peripheral Nervous System includes
cranial nerves
The sensory (afferent) division of the PNS
conveys action potentials to the CNS
The motor (efferent) division of the PNS
transmits impulses from the CNS to skeletal muscle
Digestion of food is regulated by the
Parasympathetic division of the ANS
The junction of a neuron with another cell is a/an
synapse
The enteric nervous system consists of plexuses within the walls of the
digestive tract
Axons
have a distal portion that branches to form the presynaptic terminals
Synaptic vesicles contain neurotransmitters and are present in the
presynaptic terminals
What is the only neurotransmitter released at the neuromuscular junction?
acetylcholine
What ion is necessary for the release of neurotransmitter from synaptic vesicles?
calcium
The same neurotransmitter may produce different effects on neurons because of differences in the
type of receptors on the postsynaptic membranes of neurons
When a neurotransmitter binds to its receptor and increases in permeability of the postsynaptic membrane to sodium ions..
an excitatory postsynaptic potential (EPSP) will result