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Flashcards in CNS and PNS** Deck (50)
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1

Where are the cranial meninges located?

Between bone and soft tissue

2

What is the function of the cranial meninges?

Enclose and protect the brain and spinal cord

3

Outermost layer membrane made of tough, white dense connective tissue. Contains many blood vessels

Dura mater

4

Middle layer that is thin and has no blood vessels

Arachnoid mater

5

Located between the arachnoid mater and pia mater in the subarachnoid space

CSF

6

innermost membrane that is attached to the surface of the brain and spinal cord. Contains many vessels

Pia Mater

7

Medical condition caused by inflammation of the meninges

Meningitis

8

Provides physical stability and shock absorption for spinal cord; blood vessels within the meninges deliver oxygen and nutrients to the spinal cord

Spinal cord meninges

9

What are 2 functions of the spinal cord?

Conduct nerve impulses, serving as the integration center for spinal reflexes

10

Carries sensory information to the brain

Ascending tract

11

Conduct motor impulses from the brain to the effector

Descending tracts

12

Lies between the dura mater and walls of the vertebral canal

Epidural region

13

What does the epidural region include?

Loose connective tissue, blood vessels, adipose tissue

14

How many segments does the spinal cord consist of?

31

15

What does a central canal contain?

CSF

16

What is the CSF flow in order?

lateral ventricle, interventricular foramen, 3rd ventricle, cerebral aqueduct, 4th ventricle, central canal

17

Specialized capillaries that secrete CSF into the ventricles; produces CSF

Choroid plexus

18

CSF is removed form the subarachnoid space

Lumbar Puncture

19

What can cross the blood brain barrier?

Lipid soluble compounds, uncharged oxygen and carbon dioxide molecules

20

Where is the brainstem located?

Between the cerebrum and spinal cord

21

Controls visceral activities

Medulla oblongata

22

Relays information from medulla to cerebrum and maintain rhythm of breathing

Pons

23

Visual and auditory reflex centers

Midbrain

24

Provides timing for coordinated skeletal muscle activity; controls balance and equilibrium

Cerebellum

25

Located between the cerebral hemispheres

Diencephalon

26

Sensory impulses and general awareness of pain and touch

Thalamus

27

Produce hormone melatonin that controls our circadian rhythms

Pineal gland

28

Maintains homeostasis by regulating visceral activities, links endocrine and nervous system

Hypothalamus

29

What are the 4 major lobes of the cerebrum?

Frontal, parietal, occipital,temporal

30

Motor areas involved with control of voluntary muscles, concentration, planning, problem solving, home of personality

Frontal

31

Sensory areas involved with cutaneous and other senses, understanding speech, using words

Parietal

32

Interpretation of sensory experiences, memory of visual and auditory patterns

Temporal

33

Combines visual images, visual recognition of objects

Occipital

34

Controls language related abilities, movement on left side of the body

Right hemisphere

35

Controls language related activities of speech, writing, reading, intellectual functions

Left hemisphere

36

Mass of white matter in the brain composed of nerve fibers connecting the right and left hemispheres

Corpus Callosum

37

Elevations on the brain

Gyrus

38

Shallow grooves on the brain

Sulcus

39

Consists of the cranial and spinal nerves that arise from the CNS and travel to the remainder of the body

PNS

40

Cranial and spinal nerves that connect the CNS to skin and skeletal muscles; oversees conscious activity

Somatic nervous system

41

Nerve fibers that connect the CNS to viscera, heart, glands, stomach, intestines; oversees unconscious activity

Autonomic nervous systme

42

Prepares the body for energy expending, stressful for emergency situations; fight or flight respons

Sympathetic nervous system

43

Portion of the PNS that functions without conscious effort, control visceral functions by regulating actions of smooth cardiac muscles and glands

Autonomic nervous system

44

Counterbalances the effects of the sympathetic division and restores the body to a resting state following a stressful experience

Parasympathetic nervous system

45

Where is the choroid plexus located?

Behind pons and medulla oblongata

46

What are the 4 major areas of the brain?

Brainstem, cerebellum, deincephalon, cerebrum

47

What structures do the brainstem include?

Pons, midbrain, medulla oblongata

48

What structures do the cerebrum include?

Frontal, parietal, occipital, temporal

49

What structures does the deincephalon include?

Thalamus, hypothalamus, pineal gland

50

What are the 4 spinal nerves?

Cervical plexus, brachial plexus, intercostal nerves, lumbosacral plexus