Chapter 6 - Nervous Sys- Part 3 Flashcards Preview

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Flashcards in Chapter 6 - Nervous Sys- Part 3 Deck (56)
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1

Cranial nerves, spinal nerves, ganglia, and sensory receptor are all--------

PNS (Peripheral Nervous System)

2

Paths of communication between the brain and the periphery called ------

Cranial nerves

3

-------------has 12 pairs of nerves that exit from the --------of the brain.

cranial nerves
base

4

-------------paths of communication between the SC and the periphery.

Spinal nerves

5

There are --------pairs of Spinal nerves (C1-C7, T1-T12, L1-L5, S1-S5), they are numbered according to the region and level of the vertebral column which they emerge.

31

6

Spinal nerves connect the SC to :
1.----------------
2.---------------
3. --------------
in all part of the body

1. receptors
2. muscles
3. glands

7

parallel bundles of axons (and their associated neuroglial cell) wrapped in several layers of CT called ----------

Spinal Nerves

8

In the Spinal nerves, the 1st pair of cervical nerves emerges from the spinal cord between the ----------------and the-----------------

base of the skull
1st cervical vertebrae (a.k.a atlas)

9

In Spinal nerve ,
C1- ---exit the spine above their corresponding vertebrae

C7

10

In Spinal nerves,
-----exits between C7 and T1 vertebrae

C8

11

T1- -----exit below their corresponding vertebrae

L5

12

-------------not all are aligned with their corresponding vertebrae -lumbar, sacral, and coccygeal nerves descend from ------to their respective levels.

Spinal Nerves
L2

13

All of the nervous tissues outside the CNS called ---------

Peripheral nervous system

14

spinal nerves

2 bundles of axons that connect the spinal nerve to the SC called

nerve root

15

spinal nerves

---------a bundle of motor axons

anterior root (ventral)

16

spinal nerves

-------a bundle of sensory axons

posterior root (aka dorsal)

17

spinal nerves

a swelling in the posterior root containing cell bodies of sensory neurons of the PNS called -------

Posterior/dorsal root ganglion
(aka unipolar, primary afferent)

18

What are the connective tissue of a spinal nerve ?

1. Endoneurium
2. Perineurium
3. Epinerium

19

connective tissues of the spinal nerve

-----------inner most, covers the axon (whether it's myelinated or not), highly vascularized

endoneurium

20

--------middle layer, covers fascicles (bundles of axons), Highly vascularized

perineurium

21

What are the subdivisions of the PNS ?

1. Somatic NS (SNS)
2. Autonomic NS (ANS)
3. Enteric NS (ENS)

22

SNS stands for --------------

Somatic nervous system

23

Is the SNS Voluntary nervous system ? T or F

True

24

In the SNS ; sensory neurons (aka 1st order neurons) convey info to the ------ (e.g temp, pressure, pain)

CNS

25

In the SNS ; motor neurons conduct signals from -------to-----------

CNS
Skeletal muscle only

26

ANS stands for -------------------

Autonomic Nervous System

27

ANS monitors -------------and controls --------body activities (e.g----------,---------,-----------) automatically.

sensory
motor
(cardiac, smooth muscle, glands)

28

The ANS has 2 divisions :

1. Sympathetic nervous system (SyNS)
2. Parasympathetic nervous system (PaNS)

29

Fight or Flight called -------

Sympathetic nervous system (SyNS)

30

High sympathetic activity comes from being excited, scared, threatened called ---------

Sympathetic nervous system (SyNS)