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Joints
Bones
Muscle Contraction
Muscle Mechanics
Muscle Metabolism
100
This fluid, common to all synovial joints, fills the synovial cavity
What is synovial fluid
100
This condition, common in the elderly, is attributed to a loss of mineralization
What is osteoporosis
100
These protein structures do all the sliding during contraction
What are thin (actin) filaments
100
This type of contraction involves shortening of the muscle fibers
What is isotonic
100
Direct phosphorylation occurs when this donates a phosphate group to ADP
What is creatine phosphate
200
Besides a joint, this is the other term for where two bones come together.
What is an articulation
200
This is where interstitial growth occurs
What is the epiphyseal plate
200
The myosin head binds to this to form a cross bridge
What is troponin
200
This is the simplest observable contraction in the lab
What is a twicth
200
This byproduct of glycolysis can serve as fuel for the heart
What is lactate
300
This class of joint is slightly movable
What is amphiarthrotic
300
This type of growth involves widening
What is appositional
300
This provides the energy to break cross bridges
What is ATP
300
Beyond this stimulus, there is no observable increase in contraction strength
What is maximal
300
During the first few seconds of burst running, you muscles use up this stored molecule
What is ATP
400
You'll find this type of fibrous joint in the skull
What is a suture
400
This vitamin helps you absorb calcium
What is D
400
At low Ca levels, active sites on the thin filaments are blocked by this protein structure
What is tropomyosin
400
Many rapid fire stimuli can cause a muscle to achieve this state
What is tetanus
400
This is the physiological inability to contract despite continued stimulation
What is fatigue
500
These ligaments keep the knee from moving side to side
What is collateral
500
These cells are activated by the parathyroid hormone when Ca levels fall
What are osteoclasts
500
This is a motor neuron and all the fibers in supplies
What is a motor unit
500
Besides intensity, you can change this aspect of a stimulus to increase the force of a muscle contraction
What is frequency
500
About 40% of the energy during muscle contraction produces this
What is movement