RMF523A Lecture Review Of Anatomy 2013 (1)
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Transcript of RMF523A Lecture Review Of Anatomy 2013 (1)
© Endeavour College of Natural Health endeavour.edu.au 1
RMF523
STREAM A WEEK 1 Overview and Review of
Anatomy
© Endeavour College of Natural Health endeavour.edu.au 2
Review of Anatomical Language
Anterior
Superior
Medial
Distal
Superficial
Ipsilateral
Cephalad/cranial
Posterior
Inferior
Lateral
Proximal
Deep
Contralateral
Caudal
© Endeavour College of Natural Health endeavour.edu.au 3
Review of Anatomical Language
Use the diagram to
Label the following:
1. Distal
2. Proximal
3. Medial
4. Lateral
5. Superior
6. Inferior
© Endeavour College of Natural Health endeavour.edu.au 4
Review of Types of Bones
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Types of Bones
o Long eg femur
o Short eg carpals
o Flat eg scapula
o Irregular eg vertebrae
o Sesamoid eg patella
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Planes and Sections
o A plane is an
imaginary flat surface
that passes through
the body.
o A section is one of the
2 surfaces (pieces)
that results when the
body is cut by a plane
passing through it.
Taken from Tortora and Derrickson Edition 10
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Planes and Sections
Label the following planes:
o Frontal (or coronal)
o Transverse (or
horizontal)
o Sagittal
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Axial bones
o Vertebral Column
o Skull – Cranial portion
o Skull - Facial portion
o Ribs and Sternum
Illustration taken from Tortora & Grabowski 10th Edn
© Endeavour College of Natural Health endeavour.edu.au 9
Appendicular
bones
o Pectoral Girdle
o Upper limb
o Pelvic Girdle
o Lower limb
Illustration taken from Tortora & Grabowski 10th Edn
© Endeavour College of Natural Health endeavour.edu.au 10
Identify Axial Bones - activity
Vertebral column o Cervical x 7
o Thoracic x 12
o Lumber x 5
o Sacrum – up to 5 fused vertebra
o Coccyx – up to 5 fused vertebra
Ribs x 12 o Sternum – 3 separate components, 1. Manubrium, 2.
Body and 3. Xiphoid
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Identifying Appendicular Bones Pelvic Girdle/Lower Limb
o Ilium
o Ischium
o Pubis
o Femur
o Patella
o Tibia
o Fibula
o Tarsals
o Metatarsals
o Phalanges
Pectoral Girdle/Upper
Limb
o Clavicle
o Scapula
o Humerus
o Ulna
o Radius
o Carpals
o Metacarpals
o Phalanges
© Endeavour College of Natural Health endeavour.edu.au 12
Answers to use
to check your
labeled
illustrations
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Classification of Joints
o Structural classification based upon:
• Presence of space between bones
• Type of connective tissue holding bones together
– Collagen fibers
– Cartilage
– Joint capsule & accessory ligaments
o Functional classification based upon movement:
• Immovable Synarthrosis
• Slightly movable Amphiarthrosis
• Freely movable Diarthrosis
© Endeavour College of Natural Health endeavour.edu.au 14
Fibrous Joints
o Lack a synovial cavity
o Bones held closely together by fibrous
connective tissue
o Little or no movement (amphiarthroses or
synarthroses)
o 3 Types
• Sutures
• Syndesmoses
• Gomphoses
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Fibrous Joints - Sutures
o Thin layer of dense fibrous
connective tissue unites
bones of the skull
o Immovable (synarthrosis)
Fig 7.1
Tortora & Derrickson 7th edn
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Fibrous Joints - Syndesmosis
o Fibrous joint
• bones united by ligament
o Slightly movable (amphiarthrosis)
o Example:
• Tibiofibular joint and Interosseous membrane
Fig 7.1b
Tortora & Derrickson 7th edn
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Fibrous Joints - Gomphosis
o Ligament holds cone-shaped peg in bony socket
o Immovable (synarthroses)
o Example:
• Teeth in alveolar processes
Fig 7.1c
Tortora & Derrickson 7th edn
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Cartilaginous Joints
o Lack a synovial cavity
o Allow little or no movement
o Bones tightly connected by fibrocartilage or
hyaline cartilage
o 2 Types
• Synchondroses
• Symphyses
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Cartilaginous Joints - Synchondrosis
o Connecting material is hyaline cartilage
o Immovable (synarthrosis)
o Examples:
• Epiphyseal plate
• Joints between ribs and sternum
Fig 7.2
Tortora & Derrickson 7th edn
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Cartilaginous Joints - Symphysis
o Fibrocartilage is the
connecting material
o Slightly movable
(amphiarthroses)
o Examples:
• Intervertebral
discs
• Pubic symphysis
© Endeavour College of Natural Health endeavour.edu.au 21
Synovial Joints
o Synovial cavity
separates
articulating bones
o Freely moveable
(diarthroses)
o Articular cartilage
• Reduces friction
• Absorbs shock Fig 7.3
Tortora & Derrickson 7th edn
© Endeavour College of Natural Health endeavour.edu.au 22
Synovial Joints o Articular capsule
• surrounds joint
o Fibrous capsule
• External layer - holds joints together
• Thickenings in fibrous capsule called ligaments
o Synovial membrane
• Inner lining of capsule
• Secretes synovial fluid (containing hyaluronic acid slippery)
• Brings nutrients to articular cartilage Fig 7.3
Tortora & Derrickson 7th edn
© Endeavour College of Natural Health endeavour.edu.au 23
Special Features
o Accessory ligaments
• Extracapsular ligaments
– Outside joint capsule
• Intracapsular ligaments
– Within joint capsule
o Articular discs or menisci
• Attached around edges of capsule
• Allow 2 bones of different shape to fit tightly
• Increase stability of joint (knee - torn cartilage)
Fig 9.15
Tortora & Derrickson 11th edn
© Endeavour College of Natural Health endeavour.edu.au 24
Special Features
o Bursae
• Fluid-filled saclike extensions of the joint capsule
• Reduce friction between moving structures
– Skin rubs over bone
– Tendon rubs over bone
• Bursitis
– Chronic inflammation of a bursa
Fig 9.15
Tortora & Derrickson 11th edn
© Endeavour College of Natural Health endeavour.edu.au 25
Types of Synovial Joints
o Planar
o Hinge
o Pivot
o Condyloid/Ellipsoidal
o Saddle
o Ball and Socket
Fig 7.3
Tortora & Derrickson 7th edn
© Endeavour College of Natural Health endeavour.edu.au 26
Synovial Joints
o Bones are
surrounded by a joint
capsule and it also
encloses the joint
cavity
o Inner layer of capsule
is a synovial
membrane that
secretes fluid into
joint
o Outer layer is a
fibrous tissue
continuous with the
periosteum of the
bone
o Bones are capped
with articular cartilage
o Allow for large
amount of movement
© Endeavour College of Natural Health endeavour.edu.au 27
Synovial Joints - Ligaments o Fibrous structures (primarily collagen) that
attaches from one structure to another – usually
bone to bone
o Ligaments cross joints and supply joint integrity
o Ligaments are often thickenings of the outer
fibrous layer of the joint capsule (extra-articular)
o An intra-articular ligament is located within the
joint cavity
o Functionally the purpose of a ligament is to limit
movement at a joint
© Endeavour College of Natural Health endeavour.edu.au 28
Synovial Joints - Ligaments
o e.g. Extra-articular
ligaments are the
Tibial collateral and
the Fibular collateral
ligaments
o e.g. Intra-articular
ligaments are the
Anterior and Posterior
Cruciate ligaments Image taken from www.larsligament.com
© Endeavour College of Natural Health endeavour.edu.au 29
Uni-axial Synovial joints
A uniaxial joint allows
movement to occur
around one axis or in
one plane
Two types:
Hinge Joints
Pivot Joints
A Hinge Joint has one
bony surface shaped
like a ‘spool’ and the
other bony surface
being concave to meet
the ‘spool-like’
arrangement
e.g. Elbow joint
© Endeavour College of Natural Health endeavour.edu.au 30
Uni-axial Synovial joints
o An example of a
hinge joint – note the
‘spool-like’ shape at
the distal end of the
humerus
o And the concave
shape at the proximal
end of the ulna
© Endeavour College of Natural Health endeavour.edu.au 31
Uni-axial Synovial joints
o Pivot Joints have
one surface shaped
like a ring and the
other bony surface
shaped so it can
rotate in the ring
o e.g. Atlanto-axial joint
or Radio-ulnar joint Taken from Tortora and Derrickson Edition 10
© Endeavour College of Natural Health endeavour.edu.au 32
Bi-axial Synovial joints
A Biaxial joint allows
movement to occur
about two axes or within
two planes
Two types of biaxial
joints are:
Condyloid Joints
Saddle Joints
Condyloid joints have
the surface of one bone
being concave in shape
and the other is convex
(oval or ellipsoid) in
shape.
e.g. Radio-carpal joint in
the wrist and
metacarpophalangeal
joints of the hand
© Endeavour College of Natural Health endeavour.edu.au 33
Bi-axial Synovial joints
o Example of
condyloid joint –
Radio-carpal joint in
wrist
o Condyloid can also be
described as Ellipsoid
(or oval shaped)
Taken from Tortora and Derrickson Edition 10
© Endeavour College of Natural Health endeavour.edu.au 34
Bi-axial Synovial joints
o A Saddle joint is a
modified condyloid joint
o Both bones have a
convexity and a
concavity on the
articulating surface
o The convexity of one
bone fits into the
concavity of the other
and vice versa E.g. the base of the thumb is
a good example of a saddle
joint
Taken from Tortora and Derrickson Edition 10
© Endeavour College of Natural Health endeavour.edu.au 35
Tri-axial Synovial joints
Tri-axial joints allow
movement to occur
around three axes, or in
three planes
The ball and socket
joint is a tri-axial joint
One bone has a ball-like
convex surface that fits
into the concave-
shaped socket of the
other bone
e.g. Hip joint and
shoulder joint
© Endeavour College of Natural Health endeavour.edu.au 36
Triaxial Synovial joints
o Note the ‘cup-like’
shape of the
actabulum (Greek &
Roman origin:
meaning a vessel
that had a wide neck
and contained
vinegar)
Taken from Tortora and Derrickson Edition 10
© Endeavour College of Natural Health endeavour.edu.au 37
Nonaxial Synovial joints
o A non-axial joint
allows movement to
occur within a plane
but not around an
axis
o The movement is a
gliding movement
along the surface of
another bone
The surfaces of a non-
axial joint are usually
flat or slightly curved
e.g. Intercarpal and
intertarsal joints or the
facet joints of the
vertebral column
© Endeavour College of Natural Health endeavour.edu.au 38
Nonaxial Synovial joints
o A Planar joint
o E.g. the intertarsal
joints are non-axial
synovial joints
Taken from Tortora and Derrickson Edition 10