Anatomy Test Chapter 7 (Nervous System)
which of the nerve plexuses serves the shoulder and arm?
brachial
Central nervous system refers to the:
brain and spinal cord
The midbrain, pons, and medulla oblongata are housed in the:
brain stem
Loss of muscle coordination results from damage to the:
cerebellum
Which of the following brain dysfunctions is also known as a stroke?
cerebrovascular accident
The sympathetic and the parasympathetic are divisions of the:
autonomic nervous system
The Schwann cells form a myelin sheath around the:
axon
The cerebrospinal fluid is continually formed by the:
choroid plexuses
The role of the interneuron is to:
connect motor and sensory neurons in their pathways
Characteristic of the parasympathetic nervous system:
decrease in heart rate
Neuron processes that receive incoming stimuli are called:
dendrites
Outermost to innermost layers of the meninges:
dura mater, arachnoid layer, pia mater
Muscles and glands are:
effectors
Bipolar neurons are commonly:
found in ganglia
A stroke in the primary motor area has caused Don to lose control over his skeletal muscles on the right side of his body. What lobe of his brain was damaged?
frontal lobe
Collections of nerve cell bodies outside the CNS are called:
ganglia
The elevated ridges of tissue on the surface of the cerebral hemispheres are known as:
gyri
Control of temperature, endocrine activity, metabolism, and thirst are functions associated with the:
hypothalamus
The pituitary gland is most closely associated with the:
hypothalamus
Two major functional properties of the neuron are:
irritability and conductivity
An action potential is caused by an influx of these ions into the cell:
magnesium
The vital centers for the control of the visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are located in the:
medulla oblongata
The blood- brain barrier is effective against the passage of:
metabolic waste such as urea
Neurons with several processes branching off the cell body, such as motor neurons and internuerons, are structurally classified as:
multipolar
Impulse conduction is fastest in neurons that are:
myelinated
The substance that is released at axonal endings to propagate a nervous impulse is called?
neurotransmitter
What forms the myelin sheath in the central nervous system?
oligodendrocytes
"Fight or flight" deals with the:
parasympathetic division
The effects of the sympathetic nervous system are essentially the opposite of the:
parasympathetic nervous system
During the resting state, a neuron is:
polarized with sodium ions outside of the cell and potassium ions inside the cell
After an action potential is propagated, what ion rapidly diffuses out of the cell into the tissue fluid?
potassium
What is the correct sequence in a typical reflex arc?
receptor, afferent neuron, integration center, efferent neuron, effector
The diffusion of potassium ions out of a neuron causes it to experience?
repolarization
Fibers that carry information from the skin, joints, and skeletal muscles to the central nervous system are:
sensory
What effector is not controlled by the autonomic nervous system?
skeletal muscle
The function of the olfactory nerve concerns:
smell
Which type of reflex arc involves skeletal muscles?
somatic
The shallow grooves of tissue on the surface of the cerebral hemispheres are known as:
sulci
The gap between two communicating neurons is termed:
synaptic cleft
The part of the brain that deals with the ability to speak is the:
Broca's area
