January Exam - FMA Flashcards
(97 cards)
What are the bones/articular surfaces in the trunk/lumbar spinal joint?
BONUS: How do they differ to other bones in the spine? Why?
- The lower 5 vertebra of the spine, referred to as L1-5.
- L5 connects to the top of the Sacrum which fits between the two pelvic bones.
- B: Compared to the rest of the spine, lumbar vertebra are taller and bulkier, partly due to its responsibility concerning weight bearing.
Joint type/classification for trunk/lumbar spinal joint
- Facet joints = synovial plane
- Anterior intervertebral joint = cartilaginous symphysis
Outline ligaments in the trunk/lumbar spinal joint
BONUS: Outline each of their function(s)
- All vertebrae are joined together by anterior + posterior longitudinal ligaments that extend along the whole length of the vertebral column joining the respective surfaces of the vertebral bodies.
- Each facet joint is surrounded by a joint capsule which is largely made up of ligament.
- Lumbar ligaments are arranged in layers and multiple directions which aid in connecting this part of the spine to the sacrum and pelvis.
- Ligamentum flavuum
What is lumbar flexion?
Outline the movement’s prime mover(s)
- Bending towards lower limbs/feet in the lower back
- Rectus Abdominis, internal oblique, and external obliques
What is lumbar extension?
Outline the movement’s prime mover(s)
- Bending away from lower limbs/feet in the lower back
- Erector spinae group
What is lateral lumbar flexion?
Outline the movement’s prime mover(s)
- Bending of the lower back from side-to-side
- Erector spinae group, Oblique abdominals, Quadratus lumborum
Outline prime mover(s) involved in lumbar rotation
Internal and external oblique abdominals
Outline nerve supply in the trunk/lumbar spinal joint
Lumbar spinal nerve roots form the nerves that go to the lower limbs and the pelvis. At each ‘level’ of vertebra, two nerve roots leave the spine from both sides (L+R).
Outline main blood supply in the trunk/lumbar spinal joint
The main blood supply to the spinal cord is via the single anterior spinal artery (ASA) and the two posterior spinal arteries (PSA).
EX: A pair of lumbar arteries arises from the back of the aorta in front of each of the upper four lumbar vertebrae.
What are the two supporting structures for both the lumbar and cervical spinal joint?
- The spinal canal, which is the tunnel formed through the connected rings found on each vertebra itself provides a protective structure for the spinal cord
- Intervertebral discs are a special structure which sits in between each vertebra and primarily function as shock absorption.
Outline the main bones/articular surfaces in the neck/cervical spine
- In terms of spinal column itself, the vertebra C1-C7 which descends in order.
- The spinous processes are the projections on the back of the vertebra and are the pointy things which you can sometimes feel if you rub down the middle of someone’s back.
Outline the bones/articular surfaces which are UNIQUE to the neck/cervical spine
- Transverse processes are the projections on the left + right of the vertebra and unique to the cervical spines
- The c.spine have holes known as Transverse Foramen.
- These provide a passageway for arteries to provide blood supply to the back of the brain.
Outline ligaments found in the cervical spinal joint/neck
- Several long sections connect on the front and the back of all the vertebra, the Anterior and Posterior Longitudinal Ligaments.
- Like a long elastic band, the ligamentum flavum connects to each of the lamina bones’ front surface.
- Each facet joint is surrounded by a joint capsule which is largely made up of ligament.
What is cervical flexion?
Outline the movement’s prime mover(s)
- Bending the neck towards the chest
- Sternocleidomastoid
What is cervical extension?
Outline at least 2 of the movement’s prime movers
- Bending the neck backwards, away from the chest and bringing the chin upwards
- Upper trapezius, splenius group, the semispinalis group, and the erector spinae
What is cervical lateral flexion?
Outline the movement’s prime mover(s)
- Bending of the lower back from side-to-side
- Sternocleidomastoid
Outline prime mover(s) involved in cervical rotation
Sternocleidomastoids, upper trapezius, and splenius group
Joint type/classification for neck/cervical spinal joint
- Synovial plane (c5-c6)
Outline ligaments of the hand
BONUS: Describe their function
- Collateral ligaments are on either side of each finger and the thumb to prevent abnormal bending of these digits.
- The volar plate, the strongest ligament in this part of the body, surrounds the knuckles and enables straightening of the joints whilst preventing them from bending back too much/hyperextension.
- Pulleys are tunnels in the digits that are made of ligaments which help hold the tendons of the fingers against the bones.
What is the non-ligament supporting structure present in the hand?
What is its function?
Articular cartilage
The joints of the fingers and hand are covered in articular cartilage, which functions as to absorb shock and is smooth and rubbery in texture to facilitate motion
What are the main bones/articular surfaces in the hand?
- Palm = metacarpals = 1 to 5 from thumb to little finger
- Fingers = Phalanges - proximal, middle & distal from base to tip apart from thumb that has only 2
Outline main blood supply in the hand
- The blood supply to the hand comes from 2 main sources: the ulnar and radial arteries which both originate from the brachial artery
- The ulnar and palmer carpel arteries each split off into a superficial palmer branch and a deep palmer branch
• The radial artery is where pulse can be taken
Outline main nerve supply in the hand
- There are 3 main nerves in the hand: the median nerve, the ulnar nerve and the radial nerve
- They originate in the shoulder and travel down the arm to the hand
Joints and typings of the hand?
- At the base of the fingers are carpometacarpal joints which are synovial plane (3-5) and saddle (1-2) joints
- Joints between the metacarpals and proximal phalanges are the metacarpophalangeal joints and these are condyloid synovial joints
- Between the phalanges are the interphalangeal joints (proximal and distal) - these are synovial hinge joints