Chapter 6 - Nervous Sys-Part-2 Flashcards Preview

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Flashcards in Chapter 6 - Nervous Sys-Part-2 Deck (65)
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1

the brain and spinal cord are part of the ------

CNS

2

1. Cranial nerves and their branches,
2. Spinal nerves and their branches
3. Ganglia
4. Enteric plexuses
5. Sensor receptors
are all part of the ........................nervous system

PNS (potential nervous system)

3

a cluster of neuronal cell bodies in the CNS ---------

Nucleus

4

a cluster of neuronal cell bodies in the PNS ---------

Ganglion

5

A bundle of axons in the CNS called ---------

tract

6

Interconnect neurons in the spinal cord and brain called ----------

tracts

7

A bundle of Axons in the PNS called -----

nerve

8

Peripheral nerves connect the spinal cord to the-------

Periphery

9

Cranial nerves connect the brain to the --------

periphery

10

Collections of cell bodies and unmyelinated nerve fibres in the CNS

Grey matter

11

Collections of myelinated axons on the CNS

White matter

12

What is the structure of the nervous sys;

1. CNS
2. PNS

13

CNS- Spinal Cord

encased in the ----------

Vertebrae (bones of the spine)

14

CNS- Spinal Cord

Extends from the bottom part of the brain stem to --------

L2 (2nd lumbar vertebra)

15

CNS- Spinal Cord

At L2 it tapers into a structure called the---------

conus medullaris

16

CNS- Spinal Cord

The roots of the spinal nerves below the conus medullaris called ------------------

cauda equina

17

CNS- Spinal Cord (Structure)

------------surrounding an inner core of grey matter

White matter

18

CNS- Spinal Cord (Structure)

2 grooves that divide the white matter into right and left sides called --------------

Anterior median fissure and posterior median sulcus

19

CNS- Spinal Cord (Structure)

a small tube in the centre of the spinal cord (SC) that contains CSF called -----------

central canal

20

In Grey Matter each side is divided into regions called --------

horns

21

Posterior called horns; it is the axon of ---------------and -------------in the Gray Matter

incoming sensory neurons and interneurons

22

Anterior horn in the gray matter called------- in the Grey matter

motor nuclei , where neurons are leaving

23

Lateral horn in the Grey matter are found in the;
1.-----------
2.----------
3.----------
and they contain the ------------- ---------.

1. thoracic
2. upper lumbar
3. sacral portion
- sympathetic nuclei

24

In the White matter each side is divided into regions called -----------

columns

25

The white matter has 3 regions;

1. Anterior (aka ventral) columns
2. Posterior (aka dorsal) columns
3. Lateral columns

26

In the White matter each columns consist of ---------(------) that have common region or destination.

axons (tracts)

27

In the White matter,--------------tracts consist of axon that conduct APs toward the brain.

Sensory (ascending)
brain

28

In the White matter,--------------tracts consist of axon that conduct APs away from the brain.

motor (aka descending)

29

There are 4 structure to the brain:

1. brain stem
2. cerebellum
3. diencephalon
4. cerebrum

30

Continuos with the spinal cord (SC) it is the part between the SC and the diencephalon called----------

the brain stem