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