Chapter 1: Organization of the Central Nervous System
Which of the following analogies best describes the functional relationship between two different parts of a neuron?
A. A dendrite is to an axon terminal, as presynaptic input signaling is to postsynaptic output
B. A cell body is to a dendrite, as synaptic output is to synaptic integration
C. A cell body is to synaptic output, as an axon is to action potential conduction
D. A dendrite is to neurotransmitter release, as an axon terminal is to postsynaptic membrane neurotransmitter receptors
Comment: The dendrite is the input side of a neuron, where postsynaptic neurotransmitter receptors are located; the cell body integrates synaptic information and provides support; the axon initiates and conducts action potentials; the axon terminal is the presynaptic site, where neurotransmitter is released at the synapse
Which of the following neuron components is located within a white matter tract?
Which of the following best lists the parts of neurons that are located in a nucleus?
B. Cell bodies and dendrites
C. Cell bodies, axons, and dendrites
D. Cell bodies, dendrites, axons, and axon terminals
Comment: Whereas a nucleus contains mostly cell bodies, incoming axons to the nucleus synapse on the dendrites of neurons in the nucleus. Neurons in the nucleus give rise to axons that project from the nucleus. Axons make synaptic connections within the nucleus.
Which of the following analogies best describes the function of Schwann cells and oligodendrocytes?
A. The myelin sheath of central nervous system axons is to the myelin sheath of peripheral nervous system axons
B. The myelin sheath of peripheral nervous system axons is to the myelin sheath of central nervous system axons
C. Central nervous system action potential conduction is to peripheral nervous system action potential conduction
D. Peripheral nervous system axon structure is to central nervous system axon structure
A person suffers from a traumatic brain injury. There is bleeding and inflammation at ...