Chapter 8 The Nervous System
Each of the following is a function of the nervous system EXCEPT one. Identify the exception.
Directing activities that continue for extended periods such as growth and pregnancy.
Reflexes help control A pupil size B digestion C heart rate D bp E all of the above
E all of the above
What is the function of the cerebral association areas? A reasoning B to analyze and interpret sensory information C learning D memory E all of the above
E all of the above
Which of the following is a glial cell? A Schwann cells B astrocytes C oligodendrocytes D Microglia E all of the above
E all of the above
The spinothalamic tract conducts impulses
E up the spinal cord to the thalamus
The neurilemma of axons in the peripheral nervous system is formed by
Schwann cells.
The phrenic nerves arise from the
cervical plexus.
The area anterior to the central sulcus is the
frontal lobe
Enlargements of the spinal cord occur
in segments of the spinal cord that control the limbs
Most neurons in the brain are
multipolar
The posterior horns of the spinal cord contain
sensory nuclei
What contains a delicate network of collagen and elastin fibers through which cerebrospinal fluid circulates?
subarachnoid space
Neurotransmitters are released from the
synaptic terminals/knobs
The walls of the diencephalon form the
thalamus
Blood vessels servicing the spinal cord are found in the
the pia mater
The most rapid action potentials are conducted on
thick, myelinated axons
Neurons normally derive ATP solely through
aerobic respiration
Regions of the brain that are involved in interpreting data or coordinating motor responses are
association areas
The glial cells responsible for maintaining the blood-brain barrier are the
astrocytes
The largest and most numerous of the glial cells in the central nervous system are the
astrocytes
Neurons that have one axon and one dendrite with the soma between them are called
bipolar
The white matter of the spinal cord contains
bundles of axons that share common origins, destinations, and functions
The motor nerve tracts that link the cerebellum with the brain stem are contained within the
cerebellar peduncles
Which type of synapse dominates the nervous system?
chemical
The primary connection between cerebral hemispheres is the
corpus callosum
Which of the following is a descending tract?
corticospinal
The cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are
dendrites
Opening of sodium channels in the membrane of a neuron results in
depolarization
The ____ acts as a switching and relay center for integration of conscious and unconscious sensory and motor pathways.
diencephalon
The dural sinuses are located in the
dura mater
The expected response to the triceps-jerk reflex is
elbow extension
Which of the following is NOT a function of the neuroglia?
information processing
The two cerebral hemispheres are separated by the
longitudinal fissure
If Broca's area is damaged, what might result?
loss of ability to speak
Major centers concerned with autonomic control of breathing, blood pressure, heart rate, and digestive activities are located in the
medulla oblongata
Which of the following is not involved in creating the resting potential of a neuron?
membrane permeability for potassium ions greater than permeability for sodium ions.
Cells responsible for information processing and transfer are
neurons
The visual cortex is located in the
occipital lobe
The processing of the same information at the same time by several neuronal pools is called
parallel processing
The polarization of a nerve fiber refers to having the
potassium ions inside the cell and sodium outside the cell
