Module 5

Question 1

What are the 3 funcitons of the nervous system

Answer 1

1) sensory
2) integration
3) motor input

Question 2

Whats an example of a pseudounipolar neuron

Answer 2

general sensory nerves

Question 3

Where are bipolar neurons found

Answer 3

found in senses (sight, hearing)

Question 4

What type of neuron is most common?

Answer 4

Multipolar Neuron

Question 5

How many signals does a DENTRITE RECIVE

Answer 5

1+

Question 6

How many signals does an AXON SEND

Answer 6

ONLY 1

Question 7

Supporting Cells of CNS

Answer 7

1) Olgiodendrocyte
2) Ependymal
3) Microglla
4) Astrocyte

Question 8

Oligodendrocyte

Answer 8

forms MYELIN SHEATH

Question 9

Ependymal Cells

Answer 9

Line brain & spinal cord
produce/circulate/monitor CSF

Question 10

Astrocyte

Answer 10

MOST ABUNDANT glial cell
communication & integrity

Question 11

Microglla

Answer 11

LEAST COMMON
Protective functions

Question 12

What forms MYELIN SHEATHS in the PNS

Answer 12

Schwann Cells

Question 13

What is a myelin mainly composed of

Answer 13

FAT

Question 14

3 Parts of Brain

Answer 14

1)Cerebrum
2)Brainstem
3)Cerebellum

Question 15

2 parts of Cerebrum

Answer 15

Telencephalom
Diencephalon

Question 16

2 Parts of Brainstem

Answer 16

Midbrain
Pons
Medulla

Question 17

Telencephalon

Answer 17

Interpret sensory signals (POSTcentral gyrus)
Send motor signals (PREcentral gyrus)
Decision Making

Question 18

what white matter tract communicates in 1 HEMISPHERE

Answer 18

Association Fibre

Question 19

what white matter tract communicates between 2 HEMISPHEREs

Answer 19

Commissural Fibre (corpus Callosum)
Commussural Fibers

Question 20

what white matter tract communicates between different levels of the CNS

Answer 20

Projection Fibre

Question 21

Diencephalon

Answer 21

-Sensory/motor relay in & out of brain
-Controls Autonomic nervous system

Question 22

Thalamus

Answer 22

Relay sensory info (except smell)

Question 23

Hypothalamus

Answer 23

Contols hormone release via pituitary

Question 24

What large whitematter tracts make up the cerbral penduncles

Answer 24

Midbrain

Question 25

What fibre attaches to cerebllum to allow communication

Answer 25

Pons

Question 26

What does the Cerebellum do

Answer 26

Coordiante motor activity (balacne)

Question 27

How does CSF flow

Answer 27

1) lateral ventricles 2) interventricular foramen 3) 3rd ventricle 4) cerebral aqueduct 5) fourht ventricle 6) subarachnoid space

Question 28

What is the spinal cord support by

Answer 28

Vertebral column

Question 29

What does the spinal cord allow

Answer 29

allow comm. between CNS & PNS via spinal nerves

Question 30

What anchors the spinal cord to the sacrum & cocyx

Answer 30

Filum Terminale

Question 31

Support and Protection of bRain: meninges

Answer 31

1) dura mater 2) arachnoid amter 3) pia mater

Question 32

Dura Mater

Answer 32

Single layer of CT with epidural space (most SUPERFICIAL)

Question 33

Arachnoid Mater

Answer 33

deep into dura Continuous wiht subarachnoud space of brain

Question 34

Pia Mater

Answer 34

DEEPEST Directly attached to spinal cord

Question 35

INNER Grey Matter

Answer 35

ANTERIOR: Ventral Horn (carries motor info) POSTERIOR: Dorsal Horn (carries sensory info)

Question 36

OUTER WHITE MATTER

Answer 36

consists of tracts of fibers seperated into funiculi (bundles)

Question 37

What makes up the CNS

Answer 37

brain spinal cord

Question 38

What makes up the PNS

Answer 38

all nerves outside brain and spinal cord

Question 39

What can the PNS be further broken donw into

Answer 39

Motor (efferent) Sensory (afferent)

Question 40

What can Motor (efferent) PNS be further broken down into

Answer 40

Autonomic Somatic

Question 41

2 principles cell types in nervous system

Answer 41

1) neurons 2) supporting cells (neuroglia/glia)

Question 42

Neurons

Answer 42

excitable, transmits/generates electrical signals

Question 43

Supporting Cells

Answer 43

* protect/support neurons * send signals/communicate

Question 44

What is the function of the CNS?

Answer 44

»Where all signals come to and from »Where they are integrated »Where information can be stored

Question 45

What is the function of the PNS?

Answer 45

System that brings those signals to and from the CNS

Question 46

What does the sensory division do?

Answer 46

Relays information to CNS Sensing things such as sight, smell, touch and even pain Sends the information to the CNS through sensory neurons

Question 47

What does the motor division do?

Answer 47

Relays information from CNS to target cells The actual response that is elicited Signal comes from the CNS, the brain, or spinal cord and is relayed to a target cell through efferent neurons

Question 48

What is the function of the **somatic** nervous system? And how does it do that?

Answer 48

Controls **voluntary** movement

Question 49

What is the function of the **autonomic** nervous system?

Answer 49

Controls **involuntary** movement

Question 50

What can the autonomic nervous system be further divided into?

Answer 50

**Sympathetic** - fight or flight **Parasympathetic** - rest and digest