Introduction Part II (Exam 1) Flashcards Preview

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Flashcards in Introduction Part II (Exam 1) Deck (50):
1

How many pairs of cranial nerves?

12

2

How many pairs of spinal nerves?

31

3

_____ efferent neurons innervate skeletal muscle.

Somatic

4

_____ efferent neurons innervate cardiac muscle, smooth muscle, and gland.

Autonomic

5

Transmit signals from receptors to CNS.

Sensory Neurons

6

____ located in the brain stem.

Cranial Nerves

7

31 spinal nerves include:

8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccygeal

8

Ends at L2 level.

Conus Medularis

9

Extends from the inferior end of spinal cord.

Cauda Equina

10

Spinal Nerve Root Afferent/Sensory

Dorsal Root(Posterior)

11

Spinal Nerve Root Efferent/Motor

Ventral Root (Anterior)

12

Region of skin innervated by sensory afferent fibers from an individual spinal nerve.

Dermatome

13

Group of motor muscles innervated by a spinal nerve.

Myotome

14

Cervical Plexus

C1-4

15

Innervates the diaphragm.

Phrenic Nerve C3-5

16

Brachial Plexus

C5-T1

17

5 Primary Nerves of the Brachial Plexus

Musculocutaneous (forearm flexors) , Axillary (Deltoid) , Radial (Wrist/Finger Extensors) , Median (Forearm Pronators, Wrist/Finger Flexors) , Ulnar (Flex, Abd/Add Fingers).

18

Lumbosacral Plexus

L1-S3

19

6 Nerves of Lumbosacral Plexus

Obturator (Hip Abd) , Femoral (Quads) , Superior Gluteal (Hip Abd, Glut Min, TFL), Inferior Gluteal (Glut Max), Common Peroneal (Peroneals, Ant .Tib (Deep), Tibial (Post. Tib, Flexor Dig Hall/Longus)

20

A simple, local interruption of conduction affecting the myelin only. (Hand Falling Asleep)

Neurapraxia

21

Nerves segments proximal to injury site degenerates back to the ___ Node of Ranvier it encounters.

First

22

Changes in nerve distal to injury.

Wallerian Degeneration

23

Axons grow ___mm per day or ___ inch per month.

1

24

If cell body is destroyed?

No regeneration.

25

Myelin can take ___ days to ___ year to reform.

10 days, 1 year.

26

Separated in L and R sides, connected by thick band of nerve fibers called?

Corpus Collosum

27

Adheres to the brain. Thin, high vascularized. Houses Circle of Willis.

Pia Mater

28

Thin web-like layer. Avascular.

Arachnoid Mater

29

Layer against the skull. Tough fibrous layer.

Dura Mater

30

Sulci

Depressions

31

Gyri

Ridges

32

L Hemisphere

Verbal, Analytical

33

R Hemisphere

Nonverbal, Artistic

34

Allows communication between hemispheres.

Corpus Collosum

35

Thought, Conscious, Motor Center, Language, Reasoning, Perception

Cerebral Cortex Functions

36

Four ventricles of brain contain.

CSF

37

Where is the CSF produced ?

Choroid Plexus

38

Dominant Hemisphere

Left

39

____% are left hemisphere dominant.

95%, Right Handed

40

Masses of gray matter deep within the cerebrum.

Basal Ganglia

41

Area where major sensory tracts and the visual/auditory pathways synapse.

Diencephalon

42

Which nervous system includes cranial nerves, spinal nerves, and ganglia?

PNS

43

Primary Motor Cortex

Frontal Lobe

44

Responsible for speech.

Broca's Area (Frontal Lobe)

45

Primary Sensory Cortex

Parietal Lobe

46

Short-Term Memory

Parietal Lobe

47

Judgement, Awareness, Attention, Thinking, Aggression, Mood, Abstract

Frontal Lobe

48

Auditory Cortex

Temporal Lobe

49

Understanding, Read, Hear

Wenicke's Area (Temporal Lobe)

50

Visual Processing

Occipital Lobe