MODULE 5 NERVOUS

Question 1

The nervous system needs to be able to put together all of the incoming sensory
signals in order to create a complete picture of the environment. _____incorporates multiple
simultaneous signals

Answer 1

Integration

Question 2

• Once sensory input has been integrated, the nervous system functions to produce an
  appropriate response by sending _____ through motor nerves.

Answer 2

motor output signals

Question 3

_____ is composed of all the nerves outside of the brain and spinal cord.

Answer 3

peripheral nervous system (P N S)

Question 4

Efferent neurons are part of the ____ and carry signals ____from the C N S. Afferent neurons are
part of the ____ and carry signals __the C N S

Answer 4

motor division, away , sensory division, to

Question 5

There is only __axon per neuron. Axons carry the signal from the cell body to the axon
terminals, where the signal is then transferred to other neurons or organs.

Answer 5

one,

Question 6

Signals travel from the ___to the cell body through the axon to reach dendrites of adjacent
neurons or target organs.

Answer 6

dendrites

Question 7

___, or small glial cells, perform many protective functions in the C N S.

Answer 7

Microglia - They are able to
phagocytose, or engulf and destroy pathogens, and eliminate waste products from other cells

Question 8

___cells are cuboidal in shape and line cavities of the brain and spinal cord

Answer 8

Ependymal - These cells assist
in the production, circulation, and monitoring of cerebrospinal fluid (C S F)

Question 9

___wrap around axons in the CNS to form myelin sheath

Answer 9

Oligodendrocytes - white fat myelin

Question 10

. These
unmyelinated regions are known as

Answer 10

nodes of Ranvier (neurofibril nodes).

Question 11

cereburm bulk of brain has 2 parts

Answer 11

telencephalon (big) and diencephalon

Question 12

telencephalon is responsible for

Answer 12

interpreting sensory signals, sending
out motor signals, and decision making.

Question 13

The two cerebral hemispheres are separated by the

Answer 13

longitudinal fissure.

Question 14

The outer layer of the cerebrum is known as the

Answer 14

cerebral cortex

Question 15

The fissures and grooves are known as ___, while the lumps and bumps between the sulci are known

Answer 15

sulci, as gyri.

Question 16

Responsible for sending motor output signals. It is located anteriorly to the central sulcus

Answer 16

Precentral Gyrus (Motor Cortex)

Question 17

Responsible for receiving sensory input related to touch and feel. It is located posteriorly to the central
sulcus

Answer 17

Postcentral Gyrus (Somatosensory Cortex)

Question 18

White matter consists of bundles of

Answer 18

nerve fibres and axons.

Question 19

White matter connection between right and left hemispheres of the brain.

Answer 19

Corpus callosum:

Question 20

The ___is the most superior aspect of the brainstem.

Answer 20

midbrain

Question 21

It is important to note that the pons has fibers connecting it to the ___, allowing for
communication between these two structures.

Answer 21

cerebellum

Question 22

The diencephalon encloses a structure known as the

Answer 22

third ventricle,

Question 23

The ___is a deep brain structure with two bodies, one per hemisphere. This part of
the brain is responsible for relaying sensory information, except sense of smell, to other areas of the
brain.

Answer 23

thalamus

Question 24

The ___is a small structure below the thalamus that is connected to the
pituitary gland. The hypothalamus controls the release of hormones through the pituitary gland

Answer 24

hypothalamus

Question 25

The a___-loosely covers the brain. It creates an area called the subarachnoid space. This
space is filled with cerebrospinal fluid (a protective fluid) and blood vessels

Answer 25

arachnoid mater

Question 26

The___ are paired ‘C’ shaped spaces deep within the cerebral hemispheres.

Answer 26

lateral ventricles

Question 27

The singular___- is located in the middle of the diencephalon between the two halves of the
thalamus. It is connected to the lateral ventricles by the interventricular foramina (of Monro).

Answer 27

third ventricle

Question 28

The ____ventricle sits between the pons/medulla and the cerebellum

Answer 28

fourth

Question 29

. Cerebrospinal fluid is produced inside the ventricles primarily by the

Answer 29

choroid plexus,

Question 30

main functions of CSF

Answer 30

a Buoyancy effect t, provide support and protection to cns - shock absorber, serve as medium for transport of nutrients, waster, gases

Question 31

____is located on the inside of the spinal cord. It consists of a ventral horn which carries motor
information, and a dorsal horn which carries sensory information.

Answer 31

Grey matter

Question 32

lines the outside of the grey matter of the spinal cord. It consists of tracts of fibers
separated into anterior, lateral, and posterior funiculi (bundles).

Answer 32

White matter