Exam 1 Flashcards

1
Q

Divisions of Nervous System

A
  1. central

2. Peripheral

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2
Q

CNS Function and Controls __

A
mental processes (thinking, understanding, problem solving) 
Controls: perception and discrimination of sensory information (can discriminate between hot and cold)
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3
Q

PNS functional systems

A

somatic & autonomic

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4
Q

Somatic nervous system controls:

Two components:

A

controls: conscious sensory perception and voluntary movement
Components: cranial nerves and spinal nerves

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5
Q

CNS is protected by what 3 barriers

A
  1. skull & spinal column
  2. meninges
  3. cerebrospinal fluid
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6
Q

Autonomic Nervous System function:

What two main components:

A

function: involuntary control of glands and visceral system (large organs of the body: bowels)
Sympathetic & parasympathetic

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7
Q

Human Skull has ___ plates joined together

A

8

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8
Q

Opening at base of the cranial vault that serves as a conduit for brain stem to connect to spinal cord

A

Foramen Magnum

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9
Q

Spinal Column consists of ___ vertebrae

A

33

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10
Q

5 categories of vertebrae

A
  1. cervical
  2. thoracic
  3. lumbar
  4. sacral
  5. coccygeal
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11
Q

opening in center of vertebrae (rough circular opening):

A

vertebral foramen

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12
Q

Notches between vertebrae (spinal nerves exit through these notches)

A

intervertebral foramina

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13
Q

Foramen = ___, foramina = __

A

opening, plural openings

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14
Q

Meninges are the

A

protective covering of the brain and spinal cord

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15
Q

Meninges are made up of what 3 membranes?

A
  1. Dura mater
  2. Arachnoid
  3. Pia Mater
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16
Q

Dura mater =

A

outermost component of meninges.

- outer surface adheres to the skull, inner surface attaches to next layer, the arachnoid

17
Q

Bleeding above the dura (outer surface) =

Bleeding below the dura (inner surface) =

A

epidural (extradural) hemorrhage, subdural hemorrhage

18
Q

Accumulation of blood =

A

hematoma

19
Q

Dural reflections (4) (or dural septum)=

A

inner dural layer folds in on itself

  1. Falx Cerebri
  2. falx cerebelli
  3. Tentorium Cerebelli
  4. Diaphragma Sellae
20
Q

Arachnoid =

A

middle layer of meninges

  • no blood vessels
  • does not conform closely to contours of the brain
  • Creates space between it and the next layer (pia mater) - called subarachnoid space
  • This space is filled with cerebrospinal fluid
  • Some large spaces at the base of the brain between arachnoid and pia mater = cisterns
21
Q
  • Some large spaces at the base of the brain between arachnoid and pia mater =
A

cisterns

22
Q

Pia Mater =

A
  • inner most layer of meninges
  • adheres closely to the surface of the brain
  • inner surface contains no blood vessels
  • outer surface has veins and arteries
  • bleeding between pia mater and arachnoid
23
Q

bleeding between pia mater and arachnoid =

A

subarachnoid hemorrhage

24
Q

Cerebrospinal fluid =

Fills the =

A

bathes the entire CNS

  • subarachnoid space
  • subarachnoid cisterns, large cavities deep within the brain called ventricles
25
Q

T/F - Brain’s right and left hemispheres are not separate entities

A

True

26
Q

Hemispheres are connected by:

A

band of fibers/nerves - corpus callosum

27
Q

Average brain weighs ___ lbs

Composed of ___ water,
___ neurons, glial cells & connective tissue

A

3

3/4 (78%)
1/4

28
Q

4 Major divisions of brain =

A
  1. cerebrum
  2. diencephalon
  3. brainstem
  4. cerebellum
29
Q

Cerebrum is the surface of the brain with gyri and sulci

A

(ridges), (Grooves)

30
Q

Two prominent gyri =

A

precentral gyrus & postcentral gyrus

31
Q

Sulcus between the precentral and post central gyri =

A

central sulcus

32
Q

Deepest and longest fissure lies between the two cerebral hemispheres =

A

Superior Longitudinal Fissure or longitudinal fissure

33
Q

Other prominent fissures:

A
  • Central (or rolandic) fissure
  • Sylvian (lateral) fissure
  • Transverse Fissure
34
Q

Cerebral Lobes (4):

A
  • frontal
  • parietal
  • temporal
  • occipital
35
Q

Frontal

A
  • lower boundary in each hemisphere is the lateral (sylvian fissure)