FUNCTIONAL ANATOMY Flashcards
Define anterior
facing towards front
located at the front
Define posterior
facing towards the back
located at the back
Define medial
closer to the bodies midline
Define lateral
Further from the bodies mid line
Define deep
On inside
nearer inside
eg heart
Define superficial
On outside
nearer outside
eg skin
Define superior
located at top
facing top
Define inferior
located at bottom
facing bottom
Define proximal
Closer to trunk or major point
Define distal
Further away from trunk or major point
Define unilateral
One side
Define bilateral
Both sides
Define ipsilateral
Same side
eg lifting right arm and right leg
Define contralateral
Opposite side
eg lifting right arm and left leg
What is the anatomical position
stood upright legs together toes forward arms by side face and palms forward
What is the frontal plane
Divides body into front and back
What movements happen at frontal plane
abduction
adduction
What is the sagittal plane
splits body into right and left sides
what movements occur at the sagittal plane
flexion
extension
What is the transverse/ horizontal plane
Divides body into top half and bottom half
What movements occur at the transverse/ horizontal plane
Lateral/external rotation
medial/internal rotation
Define pronation
palm to sky –> palm down
Define supination
palm down –> palm to sky
Define lateral/ external rotation
Rotation of a body part outwards
Define medial/ internal rotation
Rotation of a body part inwards
What is the horizontal/ transverse axis
through hips
goes from left to right
allow you to do a forward roll
What is the vertical/ longitudinal axis
goes from head to toe
allows ice skating spin
What is the saggital/ anteroposterior (AP) axis
Goes from front to back
through belly button
allows cartwheel
What are the 4 types of tissue
Epithelial
Nervous
Muscle
Connective
What are the 3 types of cartilage
Hyaline (end of bones)
Fibro (discs in spine)
Elastic (ears)
What is the function of hyaline cartilage
Covers end of articular surfaces
Reduces friction
absorbs shock
What is the function of fibrocartilage
Forms discs and rings between joints
eg spine
what are the 3 types of dense connective tissue (CT)
Dense regular CT (ligament & tendon) Dense irregular CT (joint capsule) Elastic CT (lungs)
What is the function of dense regular CT
Provides strong attachment between structures
Examples of dense regular CT
Ligament - attach bone to bone
stabilise joints
restrict excessive motion
Tendon - attach muscle to bone
What is the function of dense irregular CT
Provides strength in multiple directions
Examples of dense irregular CT
Deep fascia - sheet of connective tissue surrounding & protecting muscles
Can hold muscles together and separate them into functional groups
Joint capsule - envelope surrounding synovial joint
What are the skeletal functions
Support Movement Protection Production Storage of minerals (calcium & phosphate) Endocrine regulation (osteocalcin)
How many bones are we born with
270
How many bones do we have as an adult
206
what are the 2 sections of skeleton
axial
appendicular
what creates axial
Sternum 12 ribs Cranium Mandible Spine
what creates appendicular
Upper limb
Lower limb
Name the different types of bones
Long bones Short bones Flat bones Irregular bones Sesamoid bones (patella)
Whats an advantage of a long bone
Provides excellent leavers
Whats an advantage of a short bone
Finer movement and stability
What is an advantage of a flat bone
Greater protection
What is diapsis
the shaft of a bone
the central cavity containing yellow bone marrow
What is epiphysis
the end of a bone
higher % of spongey bone & bone marrow
What is metaphysis
The middle of the bone
What is osteogenesis
the growth of a bone
What are the phases of bone remodelling
activation
resorption
reversal
formation
What is an osteum
basic unit of structure for a compact bone
What does synarthroses mean
immovable joint
what does amphiarthroses mean
slightly moveable joint
what does diarthroses mean
freely moveable joint
What does uniaxial mean
moves in 1 plane
what does biaxel mean
moves in 2 planes
what does multiaxal mean
moves in all planes
what do the bursa do
little bags of fluid that reduce friction
what does the articular capsule do
fibrous stable surfaced to support joint
what does the synovial membrane do
secretes synovial fluid into joint
what are the functions of muscles
Produce movement Maintain posture and positions Protection Heat production Drive circulatory system (vascular pump)
What are the 3 types of muscle tissue
Smooth (blood vessels)
Cardiac (heart)
Skeletal
Is smooth muscle voluntary or involuntary
involuntary
Is cardiac muscle voluntary or involuntary
involuntary
Is skeletal muscle voluntary or involuntary
voluntary
What is the balloonist theory
muscles swell when contracting
therefore the volume of muscle increases when contracting
what is a muscle fascicle
Muscle fibres are in bundles called muscle fascicles
Each fibre can individually contract
What is a tendon-osseus junction
the side of a tendon that attaches to the bone
where it attaches is the tendon-osseus junction
what is a muscle-tendinous junction
the side of a tendon that attaches to the muscle
where it attaches is the musculo-tendinous junction
what is aponeurosis
where 2 diagonal tendons meet/ come together
what are the fibres like in parallel muscle
fibres lie parallel to muscle axis
what are the fibres like in pennate muscle
Fibres are diagonal to muscle axis
what muscle is stronger pennate or parallel muscles
pennate
due to more fibres packed together creating a larger physiological cross sectional area (PCSA)
what muscle is quicker pennate or parallel muscles
parallel
pennate muscles are slower because they have to shorten over a greater distance
Define an isometric contraction
When external force is equal to muscle force
Muscle stays the same length
Define a concentric contraction
When external force is smaller than muscle force
Muscle shortens whilst contracting
Define an eccentric contraction
When external force is larger than muscle force
Muscle lengthens whilst contracting
What is a stabiliser
holds segments in place
What is an agonist
Prime mover
What is an antagonist
Muscle that is relaxing
What does striated mean when talking about muscle fibres
Has lighter regions and darker regions
What 2 filaments does the sarcomere contain
actin
myosin
Are actin filaments thick or thin
Thin
Are myosin filaments thick or thin
Thick
sliding filament model
What are darker regions called
clue - … band
A band
dArker - A band
sliding filament model
What are lighter regions called
clue - … band
I band
LIghter - I band
sliding filament model
What line is in the centre
M line
remember centre is middle - M line
sliding filament model
What line is on outside
Z line
remember Z at end of alphabet therefore end/ outside
what is a cross bridge
temporarily formed mechanical bridges between actin binding sites and myosin heads
what are binding sites
positions on actin filaments where myosin heads can attach
what is a power stroke
a ‘nod’ of the myosin head that applies force to the actin filament via the cross bridge, causes the slide
In a stretched muscle how much filament overlap is there
very little overlap
In a contracted muscle how much filament overlap is there
Plenty of overlap
In a stretched muscle how many cross bridges are there
Few cross bridges
In a contracted muscle how many cross bridges are there
Lots of cross bridges
In a stretched muscle what is the length of the sarcomere
Long
In a contracted muscle what is the length of the sarcomere
short
In a stretched muscle what is the force of contraction like
Weak
In a contracted muscle what is the force of contraction like
Strong
Define origin
Attachment of muscle to stationary bone
less movement
attached to bigger bones
Define insertion
attachment of muscle to moveable bone
more movement
attached to smaller bones
Define monoarticular
Crosses 1 joint
Define biarticular
Crosses multiple joints
Are cross bridges formed during stretching
NO
Are cross bridges formed during eccentric contractions
YES
Define kinetics
Analysis of forces acting on the body
Quantitative measure
Define kinematics
Analysis of movements, description of movement
Quantitative & qualitative measure
Define linear motion
Travel in a straight line
same distance same time
Define angular motion
Where parts rotate around an axis
Name 3 ways to collect kinematic data
inertial systems
electromagnetic systems
optical systems
Define a scalar quantity
Can be described by magnitude
Define a vector quantity
Both magnitude and direction
is mass a scalar or vector quantity
scalar
is distance a scalar or vector quantity
scalar
is speed a scalar or vector quantity
scalar
is volume a scalar or vector quantity
scalar
is velocity a scalar or vector quantity
vector
is force a scalar or vector quantity
vector
is acceleration a scalar or vector quantity
vector
what are scalars and vectors represented by
arrows
is displacement a scalar or vector quantity
vector
what is the difference between distance and displacement
distance is whole journey covered
displacement is as crow flies
eg distance = 400m
displacement = 0m as you finish where you start
what is the velocity equation
velocity = displacement/ time
what are the units for acceleration
m/s 2
what is the acceleration equation
acceleration = velocity/ time
what is positive acceleration
speeding up
what is negative acceleration
slowing down
what is the momentum equation
momentum = mass x velocity
what is true about momentum
it will stay constant until an external force acts on it
what is the impulse equation
impulse = force x time
what movements can occur at the hip
flexion extension adduction abduction internal rotation external rotation circumduction
what is a pubic synthesis
a cartilaginous joint which joins 2 nominate bones at front
what are the innominate bones of the hip
ileum
pubis (superior and inferior)
ischium
what are 3 types of fibre in hip
longitudinal fibres (straight) oblique fibres (twisted) arcuate fibres
what are the 3 main ligaments in the hip
pubofemoral (pubis to femur)
iliofemoral (ilium to femur)
ischiofemoral (ischium to femur)
what is the difference between men and women hips
Males have a higher iliac crest
Female pelvis more circular, mens are more heart shaped
Males have a tighter V at bottom of pelvis
What compartments are there in the thigh
Anterior
Medial
Posterior
Name the the hip flexors
Iliacus Psoas major Pectineus Rectus femoris Sartoius
Name the hip extensors
Biceps femoris
Semimembranosus
Semitendinosus
Gluteus maximus
What is the insertion point of the quads
tibial tuberosity
How many of the quadriceps muscles are biarticular
1 rectus femoris
where is the origin of the rectus femoris
anterior inferior iliac spine of ilium
What are the main actions of the rectus femoris
hip flexion
knee extension