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.