05 Axial Skeleton Vertebral Column And Thoracic Cage
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2. The vertebral column helps to provide vertical support for the body, supports the head, aides in maintaining an upright position, helps transfer weight to appendicular skeleton, and protects the delicate spinal cord.
5. ACCORDING TO THE CLINICAL VIEW IN YOUR TEXT, WHAT CAN CAUSE KYPHOSIS? A OSTEOMALACIA B OBESITY C PREGNANCY D PULLING ON ROPES IN BELL TOWERS E ALL OF THE ABOVE
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7. The vertebral foramen is the opening through which the spinal cord passes while the intervertebral foramen allows the spinal nerves to branch off laterally.
9. There is one spinous process , two transverse processes (left and right), two superior articular processes that interlock with the vertebra above, and two inferior articular processes (not shown) that interlock with the vertebra below.
10. The interlocking of the superior and inferior articular processes limits the twisting of the vertebral column.
20. The first cervical vertebra (the atlas) articulates with the occipital condyles of the skull on the inferior surface of the occipital bone.
21. Superior view of atlas . Note lack of a body, minimal spinous process (#1), superior articular processes (#3), and transverse foramen (#4).
22. Nodding “yes” movement made possible by articulation of occipital condyles rocking in superior articular processes of the atlas. This articulation is called the atlantooccipital joint .
23. Anterior view of second cervical vertebrae, the axis . Note the odontoid process (dens) labeled #5.
24. Anterior x- ray through open mouth. Note odontoid process (dens) of axis (#9).
30. WHICH OF THE FOLLOWING IS CORRECT ABOUT THE ATLAS? A ITS ARTICULATION WITH THE SKULL ALLOWS SIDE-TO-SIDE “NO” MOTIONS B ITS MOST SUPERIOR PART IS CALLED THE DENS C IT ARTICULATES WITH THE TEMPORAL BONE D IT HAS A PROMINENT SPINOUS PROCESS, HENCE THE TERM “VERTEBRA PROMINENS” E IT HAS HOLES IN ITS TRANSVERSE PROCESSES
31. The spinous process of C 7 (vertebra prominens) is an easily palpable prominence felt at the base of the neck.
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33. The classical hangman’s fracture of the cervical vertebrae severs the spinal cord. The large knot is typically positioned just behind the left ear.
34. The thoracic vertebrae serve as attachments for the ribs so as to form the posterior anchor of the thoracic cage.
35. Thoracic vertebrae have costal facets or costal demifacets on their bodies and transverse processes for attachment of the ribs
36. Note ribs attach to bodies and transverse processes of thoracic vertebrae
37. Lumbar vertebrae have massive bodies and thick blunt spinous processes. They are the largest vertebrae of the spinal column.
55. Suprasternal fossa is just superior to jugular notch (sternal notch). Note large rope-like muscles that form lateral boundaries of suprasternal fossa.
65. Human sacrifice in Central America. Note the sacrificial altar that is reminiscent of a USU parking barricade. This allows the victim to be bent backwards.
66. A curious mind might ask why Utah State University chose this particular design for use around the campus as a traffic barricade? Was it just by mere chance that it mimics the design of sacrificial altar stones of Aztecs?
67. I urge caution if you should see wild-eyed and bare-breasted collegians with red stained hands! (or with runny cheeseburgers)
68. Ribs #1-7 are “true ribs” and are directly attached to the sternum. Ribs #8-10 share the costal cartilage attachment of rib #7, while ribs #11-12 don’t attach anteriorly at all. So ribs #8-12 are also called “false ribs.”
69. Posterior view Ribs #11 and #12 not only are false ribs, they are also floating ribs because they have no attachment to the sternum whatsoever
71. Cervical rib on C 7 Elongated transverse process Elongated transverse process on C 7 Read about variations in rib development in clinical view in text
72. IF A WANDERING BUG STARTED ON THE OCCIPITAL BONE OF A SKELETON, TRAVELED DOWN 18 VERTEBRAE, AND THEN MOVED ANTERIORLY ALONG A BONE, WHAT BONE WHOULD THE BUG BE WALKING ON? A FLOATING RIB B FALSE RIB C BONE WITH NO COSTAL CARTILAGE D BONE OF THORACIC CAGE E ALL OF THE ABOVE
77. Christopher Reeve eventually died from an infection that began in a diseased bed sore (decubitus ulcer). He did much to promote research in treatment for spinal injuries.
78. There are many ways to suffer a flail chest . One is shown here.
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80. Paradoxical motion occurs when the fractured segment of ribs moves in a direction that is opposite from the rest of the chest wall when the injured person inhales or exhales.
89. Chiropractors have been shown to statistically have the best success with most lower back pain. More so than other healthcare providers.
90. Abdominal crunches that flex the spine strengthen the anterior muscles (such as the rectus abdominus ) that help stabilize the spine Arching or extension of the spine strengthens the posterior muscles (such as the erector spinae muscles ) that help stabilize the spine.
92. WHICH OF THE FOLLOWING HAS BEEN SHOWN TO REDUCE THE RISK OF NEURAL TUBE DEFECTS, SUCH AS ANENCEPHALY? A B VITAMIN B SUNLIGHT C VITAMIN A D FOLIC ACID WITHIN THE FIRST WEEK AFTER BIRTH E ACCUPUNCTURE