ch 17

Which of these are functions of the myelin sheath in the peripheral nervous system? (Mark all that apply)

Protect the axon Assist in nerve regeneration

Identify the two correct statements regarding the location of gray matter in the central nervous system.

The gray matter in the brain is located on the surface surrounding the white matter. The gray matter in the spinal cord is located deep within the white matter.

Identify the two correct statements regarding the location of gray matter in the central nervous system.

The gray matter in the spinal cord is located deep within the white matter. The gray matter in the brain is located on the surface surrounding the white matter.

Which of these best describes the structure of the myelin sheath in the peripheral nervous system?

The plasma membrane of a Schwann cell wraps around the axon hundreds of times forming the myelin sheath.

List, in order, the nervous system structures that will conduct a motor impulse.

brain spinal cord spinal nerves motor fibers autonomic nervous system

Which area of the nervous system controls bodily functions, is the source of emotions and higher thinking and initiates motor control?

central

receives sensory input from the joints, receives sensory input from the muscles and receives motor input from the cerebral cortex.

cerebellum

Which of the following are the the four major areas of the brain?

diencephalon cerebrum brain stem cerebellum

Nicotine causes neurons in the central nervous system to release excess ________, which has a reinforcing effect that leads to dependence on the drug.

dopamine

Select from the list below the functions of the medulla oblongata.

involved with swallowing regulates blood pressure regulates heartbeat involved with vomiting regulates breathing

Which of the following functions are carried out by neuroglia? (Mark all that apply)

maintain homeostasis assist in signal transmission form myelin support neurons nourish neurons

The protective membranes that cover the organs of the central nervous system are called the

meninges

Which of these acts as a relay station between the cerebrum and the spinal cord or cerebellum?

midbrain

Which of these are the two principal types of cells in nervous tissue?

neuroglia neurons

The primary cells of nervous tissue that conduct nerve impulses are called .

neurons

Which of these is a glial cell that forms myelin sheaths around neurons in the CNS?

oligodendrocyte

Heavy, repeated use of marijuana may cause which of the following? (Mark all that apply)

paranoia altered body image anxiety depression

Found in the frontal lobe of the brain, the area is a region that receives information from other association areas and uses it to

prefrontal

The prefrontal area of the cerebral cortex uses information from the association areas of the brain to

reason and plan actions.

Mark all of these that are functions of the cerebrum.

receive sensory input communicate with other parts of the brain command voluntary motor output

From the list below select diseases, in humans and other organisms, caused by prions.

scrapie kuru Creutzfeldt-Jakob disease

The area in the parietal lobe of the cerebrum that receives sensory input from skin and skeletal muscles is called the primary area.

sensory

The human nervous system functions to receive input, perform integration, and generate output.

sensory motor

The peripheral nervous system consists of nerves that carry messages to the central nervous system (CNS) and commands from the CNS to the muscles and .

sensory motor glands

List the neurons below in the order that a signal will be transmitted following a stimulus.

sensory neuron sensory receptor other interneurons or motor neurons interneurons

Which of the following are major functions of the spinal cord? (Mark all that apply)

serve as a center for reflex actions communicate between the brain and spinal nerves

The primary somatosensory area receives sensory impulses from skeletal muscles and the cochlea

skin

Which of the following contain cerebrospinal fluid? (Mark all that apply)

spaces between the meninges ventricles of the brain central canal of the spinal cord

Which of the following are surrounded by meninges? (Mark all that apply)

spinal cord brain

Which of these functions to integrate sensory information and relay it to the correct area of the cerebrum?

thalamus

Which of these structures functions to arouse the cerebrum and participates in higher mental functions like memory and emotions?

thalamus

MS often attacks which part of the nervous system first?

the optic nerves

Which of these would "decide" if an image is one that has been seen before in the past?

visual association area

Which nervous tissue consists of short, nonmyelinated axons?

white matter

Identify the two correct statements regarding the location of white matter in the central nervous system.

In the brain white matter is located deep within the gray matter. In the spinal cord white matter is located on the surface surrounding the gray matter.

Multiple sclerosis, which causes inflammation of the myelin sheaths that wrap some nerve cells is a(n) disease, meaning the body essentially attacks its own healthy tissues.

autoimmune

Which of these are the three general parts of a neuron?

axon dendrite cell body