Biomechanics II
What is located in the middle of a first class lever?
The lever
Which receptors detect and help body respond to changes in muscle tension
Golgi Tendon Organs
What is one way to improve your stability?
Low COG, Wider BOS, optimal position of LOG in relation to BOS, Large mass, greater friction between surface and body
What part of the skeleton includes the cranium, vertebrae, ribs, and sternum
Axial skeleton
What is the name for the muscle that executes the primary action?
Agonist
What is an example of a second class lever?
BONUS - what is an example in the human body?
A wheelbarrow
Calf raise (standing on toes)
The nervous systems ability to feel your body's position in space is known as (What)?
Proprioception
What muscle would be tight in a posteriorly tilted pelvis?
Hamstrings
Which cells build bones?
Osteoblasts
What is the difference between a ligament and a tendon?
Ligament - bone to bone
Tendon - muscle to bone
Which lever is the most common in the body (particularly the upper extremities)?
Third class lever
The state of a client's muscle contraction while lying on a massage table is known as
Resting Tone
What is the phase of gait where your body passes and is directly over your WB Foot?
Midstance
Which Law is summarized by 'Use It or Lose It'?
Wolff's Law
This principle allows a tissue to be altered and retain the new configuration or shape?
Where is the center of mass for an adult body
Anterior to second sacral vertebrae
What is post-isometric relaxation and/or how is it used?
Muscle relaxation after isometric contraction under stretch - used to increase stretch
In a forward head rounded shoulder posture, name 2 groups of muscles that are tight and 2 that are weak/lengthened?
Tight - pecs, posterior cervical (suboccipitals, levator)
Weak - Cervical flexors, scap retractors
What is the study of forces (such as gravity and friction) that act on the body to generate or alter motion?
Kinetics
What is the key difference between an origin and an insertion
Insertion - more mobile bone
How does walking with crutches help improve your balance/stability?
It increases your base of support
True or False - The more a neurological pattern is fired, the deeper and stronger that pattern is engrained
Bonus - what is this Law called - Law of (WHAT)?
Ex - PF or DF, Concentric or Eccentric
Concentric PF
Describe Creep?
GRADUAL CHANGE in shape when subjected to LOW LOAD - LONG DURATION forces
What is the functional difference in parallel and pennate muscle fibers
Pennate more fibers (stronger but shorter motion)
Parallel - longer (not as strong, but more motion)