Nervous System 1
The largest part of the brain?
cerebrum
The pituitary gland is most closely associated with the:
Hypothalamus
Impulse conduction is fastest in neurons that are:
Myelinated
The ability to respond to a stimulus is termed
Irritability
Muscles and glands are
Effectors
What two ions are involved in the action potential?
Sodium and potassium
approximately 75% of parasympathetic outflow is provided by the
vagus nerve
What are the four major regions of the brain?
Cerebrum, diencephalon, brainstem, cerebellum
Collections of nerve cell bodies inside the CNS are called
Ganglia
True or false: some neurotransmitters are also considered hormones.
True
reading, writing, and speaking are dependent on processing in the
left cerebral hemisphere
The olfactory area is found within the?
Temporal lobe
What is the function of the myelin sheath?
provides a protective insulating covering around the axon
Loss of muscle coordination results from damage to the:
Cerebellum
The midbrain, pons, and medulla oblongata are housed in the
brain stem
Cell bodies of the sensory neurons of the spinal nerves are located in
The dorsal root ganglia of the spinal cord
In contrast to the somatic nervous system, the autonomic nervous system
Has two motor neurons
What are the three basic functional classes of nerves?
Sensory neurons, Motor neurons, and Interneurons
all the motor neurons that control skeletal muscles are
multipolar neurons
The subarachnoid space lies directly between the:
Arachnoid mater and Pia mate
The neuron processes that normally receive incoming stimuli are called
Dendrites
Afferent nerves are called __________, and motor nerves are called __________.
Sensory nerves and Efferent nerves
The three major parts of the brain stem are the:
midbrain, pons, and medulla oblongata
The area of the brain stem that plays a role in consciousness and the awake/sleep cycles is the
reticular activating system
The central nervous system is made of these organs
brain and spinal cord