Back & Vertebral Column Flashcards
How do vertebral sizes diffeR?
The size of vertebrae increase from superior to inferior
How many bones are there in the spinal column?
33
How do vertebrae diffeR?
In size & shape
What are the 4 major functions of the spinal column?
- Movement
- Weight bearing
- Protection
- Site of muscle attachments.
How does the spine provide shock absorbtion?
The curves of the spine along with intervertebral discs provide the shock absorbtion
Other than shock absorption how does the vertebral column bear weight?
It transmits weight from the upper body to lower limbs
Which section of the vertebrae are curved inward?
The cervical &lumbar sections curve inward
What sections of the vertebrae are curved outward?
The thoracic & sacral sections curve outward
What are inward curves of the spie called?
Lordoses
Cervical Lordosis
Lumbar Lordosis
What are outward curves of the spine called?
Kyphoses
Thoracic Kyphosis
Sacral Kyphosis
What kind of abnormal spinal curvature does osteoporosis cause?
Osteoporosis causes excessive thoracic kyphosis
What kind of abnormal spinal curvature can pregnancy cause?
Excessive Lumbar lordosis can be caused by pregnancy
What is scoliosis?
Abnormal curving of the spinal in the coronal plane instead of saggital
What makes up the intervertebral disc?
The central nucleus pulposus
The surrounding layers of annulus fibrosus
What is the nucleus pulposus
The central core of the intervertebral disc, has a high h2o content
What is the Anulus Fibrosus?
Layers of FibroCartilage surrounding the nucleus pulposus
Whats a better name for a slipped disc?
Herniated Disc
What does the vertebral column protect?
The spinal cord, spinal nerves & arteries
Whats the covering of the spinal cord called?
The Meninges
What makes up the meninges (outside ->inside)
Dura matter
Arachnoid matter
Pia Matter
(Also Cerebrospinal fluid)
What movements is the spinal column involved in?
- Flexion & extension
- Lateral flexion/extension
- Rotation of head/neck/upper trunk
What joints are in the spinal column?
- Intervertebral discs
- Facet joints
- Rib joints
- Skull & atlas joint
- Atlas & Axis Joint
What type of joint are intervertebral discs?
Intervertebral discs are secondary cartilaginous joints
What type of joint are facet joints?
Facet joints between vertebrae are synovial plane joints
What type of joint are between the ribs & vertebral column?
Synovial plane joints join the vertebral column to the ribs
What type of joint joins the skull to the atlas?
A synovial ellipsoid joint joins the skull & atals
What joint joins the atlas & axis?
A synovial pivot joints joins the atlas & axis
What is the atlas?
C1 vertebra
What is the axis?
C2 vertebra
Whats the function of the anterior longitudinal ligament?
It supports the intervertebral discs & prevents hyper-extension
Whats the function of the posterior longituinal ligament?
Supports intervertebral discs & prevents hyper-flexion
Where is the interspinous ligament?
Between the spinoud process of adjacent vertebrae
How does the supraspinous ligament connect vertebrae?
The supraspinous ligament runs down the column from tip to tip of adjacent spinous processes
What does the ligamentum flavum connect?
The ligamentum flavum connects laminae of adjacent vertebrae
What are intrinsic back muscles?
Intrinsic back muscles act only on the back (i.e. not the limbs)
Whats the function of the erector SPinae muscle?
Extension
Controlled Flexion
Lateral Flexion
What structures are closely related to the spine?
Certain muscles
Nerves (including the sympathetic trunk)
Arteries&veins (Aorta)
Lymph system
What happens if the intervertebral discs become dehydrated?
The spinal column loses shock absorption
Pain & stifness in joints, diagnose?
Osteoarthritis
What does osteoporosis cause?
Compression fractures in vertebral body
-> abnormal spinal curvature
How do weak back muscles cause back pain?
Weak back pain
- > imbalanced loading of spine
- > Back Pain
Stuff i need to learn not in the deck:
- Parts of a vertebra
- how to reconise vertebra of different sections
- spot different associated structures on a diagram (aorta, symp trunk etc)
- Able to pick ouit different ligaments
- pick out different matter in the meninges on a diagram