1 Flashcards

(46 cards)

1
Q

What provides flexible support for the trunk and head?

A

Vertebral Column

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2
Q

What transmits weight of the trunk and upper extremities to the lower extremities?

A

Vertebral Column

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3
Q

Where does the spinal canal begin and end?

A

Begins at base of skull and extends to sacrum

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4
Q

What forms the spinal canal?

A

Succession of the vertebral foramen

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5
Q

What is enclosed and protected by the spinal canal?

A

Spinal Cord

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6
Q

Where does the spinal cord begin?

A

Below the medulla oblongata

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7
Q

Where does the spinal cord continue until?

A

Lower border of L1

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8
Q

What is the pointed end of the spinal cord called?

A

Conus medullaris

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9
Q

What continues inferiorly from the conus medullaris?

A

Cauda Equina

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10
Q

What separates adult vertebrae?

A

Intervertebral Disks

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11
Q

What do intervertebral disks allow?

A

Flexibility

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12
Q

How many sections are in the vertebral column?

A

Cervical, Thoracic, Lumbar, Sacrum, Coccyx

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13
Q

How many vertebrae are in the cervical section?

A

First 7 vertebrae

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14
Q

How many vertebrae are in the thoracic section?

A

Middle 12 vertebrae

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15
Q

How many vertebrae are in the lumbar section?

A

Final 5 vertebrae

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16
Q

What is the sacrum shaped like?

A

Shovel-shaped bone

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17
Q

How many separate bones does a child have in the vertebral column?

A

33 separate bones

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18
Q

How many separate bones does an adult have in the vertebral column?

A

26 separate bones

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19
Q

What do the curves of the spine help maintain?

A

Balance along center of gravity

20
Q

What are the primary curves of the spine?

A
  • Thoracic
  • Sacral
21
Q

What are compensatory (secondary) curves?

A
  • Cervical
  • Lumbar
22
Q

What is lordosis?

A

Exaggerated lumbar curvature

23
Q

What is kyphosis?

A

Abnormal posterior convexity of thoracic spine

24
Q

What is scoliosis?

A

Abnormal lateral curvature of the spinal column

25
What is the typical vertebra's body?
Thick weight-bearing portion
26
What is the vertebral arch?
Ring or arch of bone that extends posterior from the body
27
What forms the zygapophyseal joint?
Superior articular and inferior articular processes
28
What are intervertebral joints?
Joints between vertebral bodies
29
What are costal joints?
Articulations between ribs and thoracic vertebrae
30
What forms intervertebral foramina?
Superior and inferior vertebral notches
31
What is the outer portion of the intervertebral disk called?
Annulus fibrosus
32
What is the inner portion of the intervertebral disk called?
Nucleus pulposus
33
What distinguishes cervical vertebrae from typical vertebrae?
C3-C6 are typical; C7 has an extra long spinous process
34
What is the atlas (C1) characterized by?
No body, anterior arch
35
What is the dens or odontoid process?
Part of the axis (C2) that acts as a pivot for head rotation
36
What are costovertebral joints?
Joints between thoracic vertebrae and ribs
37
What is unique about the thoracic vertebrae?
Long spinous processes that point inferiorly
38
What is the angle of the thoracic zygapophyseal joints from the midsagittal plane?
70-75 degrees
39
What type of joint is the atlantoaxial joint?
Synovial, diarthrodial, gliding
40
How many foramina do all cervical vertebrae have?
3 foramina (2 transverse, 1 vertebral)
41
What is the position required to demonstrate cervical intervertebral foramina?
45-degree oblique combined with 15-20° cephalad/caudad angle
42
What is the total number of bones in the adult vertebral column?
26
43
Is the thoracic spinal curvature classified as a primary curve?
True
44
What is an abnormally increased 'sway-back' spinal curvature called?
Lordosis
45
What forms the costotransverse joint?
Tubercle of the rib and transverse process of the vertebra
46