Mastering A and P Nerves 1
The ________ nervous system provides involuntary regulation of smooth muscle, cardiac muscle, and glandular activity.
Autonomic
The axon is connected to the soma at the
Axon hillock
The ________ nervous system is composed of the brain and spinal cord
Central
________ nerves are nerves that connect to the brain.
Cranial
The ________ division of the nervous system carries motor commands to muscles and glands.
Efferent
________ carry motor information to peripheral effectors.
Efferent neurons
The nervous tissue outside of the central nervous system composes the ________ nervous system.
Peripheral
________ monitor the position of skeletal muscles and joints.
Proprioceptors
Which of the following is not a recognized structural classification for neurons?
Pseudopolar
Neurons that are rare, small, and lack features that distinguish dendrites from axons are called
anaxonic.
The afferent division of the PNS __________.
carries sensory information
Most neurons lack ________ and so are permanently blocked from undergoing cell division.
centrioles
Saltatory propagation occurs in _________ axons, in which action potentials _________.
myelinated; move from one node of Ranvier to another
The efferent division of the peripheral nervous system innervates ________ cells.
skeletal muscle, glandular, smooth muscle, heart muscle
Neurotransmitters ready for release are stored in synaptic
vesicles.
The basic functional unit of the nervous system is the
Neuron
The ________ division of the peripheral nervous system brings sensory information to the central nervous system.
Afferent
The part of the peripheral nervous system that carries sensory information to the CNS is designated
Afferent
________ carry sensory information to the CNS.
Afferent neurons
The most abundant class of neuron in the central nervous system is
Multipolar
________ neurons are the most common structural class in the CNS.
Multipolar
The ________ nervous system controls the skeletal muscles.
Somatic
________ nerves are nerves that connect to the spinal cord.
Spinal
Neurons that have several dendrites and a single axon are called
multipolar.