Quiz 1 Flashcards
What makes up ones flexibility?
JROM Joint ROM
MF Muscle Flexibility
Define Flexibility
The ROM available in a joint
Static Flexibility is
The measured ROM available about a joint or series of joints
Identify 2 Extracellular Fibers that play a significant role.
Collagen and Elastin
Dynamic Flexibility is
A measure of the resistance
or series of joints.
The load bearing of collagen s dependent on 3 properties that establish its Collagen Fiber Suspension Bridge?
Material Properties
Size (areaXlength)
Organization
Describe the formation of a tendon by identifying the “tendon hierarchy” figure 13-5
Tendon (whole) with reticular membrane Fasicle waveform of crimp structure Fibril fibroblasts Subfibril Microfibril 3.5 nm Tropocollagen
What is Ground Substance used for?
A viscous gel that serves to provide lubrication and space between the collagen fibers at intercept points where they cross.
What is ground substance made of?
GAG Glycosaminoglycans
Sugars and proteins
3 mechanical properties of connective tissue.
Elongation
Viscoelasticity
Plasticity
3 physical properties of connective tissue.
Force Relaxation
Creep
Hysteresis
What are the 4 zones of stress strain curve
Toe: elastic
Linear: 3 physical 3 mechanical
Primary Failure: visco plastic force relax creep
Complete Failure: complete fracture
What are the 6 anatomical elements that are possible contributors to muscle stiffness (or resistance to deformation)?
1 Adhesion of 1 fibril to another between muscle
2 The epimysium
3 Perimysium and Endomysium
4 Sarcolemma
5 Contractile elements within the muscle fiber
6 The associated tendons and their insertion
what is epimysium
is a layer of connective tissue, which ensheaths the entire muscle
Collagen
provides skeletal structure that holds C.T. together, enabling the tissue to resist mechanical forces and deformation
Elastin
assists in the recovery of a tissue from deformation
Elasticity
spring-like behavior where elongation, which is produced by tensile load, is recovered after the load is removed
Viscoelasticity
allows slow deformation with an imperfect recovery once the deforming force as been removed. The recovery is the result of the elasticity and the imperfection is the result of viscosity. Not permanent.
Plasticity
permits permanent plastic defomation
Force relaxation
the decrease in the amount of force required to maintain a tissue at a set amount of displacement or deformation over time. The rate at which the force is applied will affect the resulting relaxation of the tissue
Creep response
ability of the tissue to deform over time while the constant force is being applied
Hysteresis response
the amount of relaxation a tissue has undergone during any single cycle of deformation and relaxation
Perimysium
is a sheath of connective tissue that groups muscle fibers into bundles (anywhere between 10 to 100 or more) or fascicles.
Endomysium
is a wispy layer of areolar connective tissue that ensheaths each individual muscle fiber. It also contains capillaries and nerves. It overlies the muscle fiber’s cell
Sarcolemma
also called the myolemma, is the cell membrane of a striated muscle fiber cell
Other aspects relating to flexibility
Mobility
Stability
Controlled Mobility
Skill
Gama Bias
?
JROM
Ability of periarticular connective tissue to deform
Joint Arthrokinematics
Muscle flexibility
Ability of muscle to lengthen Neuromuscular component (GTO & muscle spindle)
*Test Static vs. Dynamic flexibility
Static - the measured ROM available about a joint or series of joints
Dynamic- the measure of resistance to active motion about a joint or series of joints
What is collagen
Fibrous protein
provides skeletal structure that holds
enables the tissue to resist mechanical forces and deformation
What is elastin
Assists the recovery of a tissue from deformation
Red
Painful
Swollen
Hot
Rubor
Osedulor
Tumor
Kalor
