BIO 201 Exam

Bio 201 Exam

61 cards   |   Total Attempts: 182
  

Cards In This Set

Front Back
The _____ nervous system is composed ofthe brain and spinal cord.
Central
The ______ nervous system controls the skeletal muscles.
Somatic
The part of the peripheral nervous system that carries sensory information to the CNS is designated
Afferent
_____ line the brain ventricles and spinal canal
Ependymal cells
Ion channels that are always open are called ___channels.
Leak
Neurotransmitter for release is stored in synaptic ______.
Vesicles
The all-or-none principle states that
All stimuli great enough to bring the membrane to threshold will produce identical action potentials.
Which type of synapse is most common in the nervous system?
Chemical
The ion that triggers the release ofacetylcholine into the synaptic cleft of aneuromUSClilar junction is
Calcium
The site in the neuron where EPSPs and IPSPs are integrated is the
Axon hillock
Summation that results from the cumulative effect of multiple synapses and multiple places on the neuron is designated
Spacial summation
When a second EPSP arrives at a singlesynapse before the effects of the first havedisappeared, what occurs?
Temporal summation
IPSPs(inhibitory post synaptic potentials)
Are hyperpolarizations
The efferent division of the peripheral nervous system innervates:
Smooth, skeletal, heart muscle cells & glandular cells
-all the above
______channels open ordose in response to physical distortion of the membrane surface.
Mechanically gated