Unit 1
Ensuring that the subject keeps the soles of their feet flat against the box, does not bend their knees, and moves in a slow and controlled manner are ways to improve the _____________ of the sit and reach test.
What is reliability (or control)?
The thin layer of connective tissue surrounding a muscle fascicle (bundle).
What is the perimysium?
The reluctance to a change in motion.
What is inertia?
Indicated by a pH value below 7.
What is an acid (or acidic solution)?
The ratio of body mass in kilograms to height in meters squared (kg/m2).
What is body mass index (BMI)?
The sutures (joints) connecting the plates of the cranium are an example of what type of joint?
What is a fibrous (immovebale) joint?
The quantity of mass in motion represented by the equation p = m x v.
What is momentum?
Representing <1% of total blood volume, these cell fragments help to form clots and stop or prevent bleeding.
What are platelets?
What are uniaxial joints (ie. hinge and pivot).
A low one of these indicates that the data points tend to be very close to the same value (the mean).
What is a standard deviation?
When the muscle changes length while tension (force) is developed.
What is isotonic contraction?
Increasing the size of the base of support (BOS), moving the center of mass (COM) within the BOS, and lowering the COM.
What are ways to increase stability?
The heart chamber that pumps deoxygenated blood into the pulmonary artery.
What is the right ventricle?
A category of testing that uses mathematical formulas to derive estimated maximal values of a certain fitness component.
What are sub-maximal tests (ex. Harvard Step Test)?
Muscle fibers that are white, large in diameter, and have few mitochondria.
What are fast-twitch fibers?
Represented by a line with a negative slope ABOVE the x-axid on a velocity-time graph.
What is a negative acceleration (ie. deceleration or slowing down)?
The large surface area of the alveoli, the thinness of the alveolar and capillary walls, and the steepness of the concentration gradient between the air in the lungs and the blood in the capillaries during respiration.
What are factors that increase rates of diffusion?
States that the pressure of a given mass of gas is inversely proportional to its volume (at a constant temperature).
What is Boyles law?
A measure of the strength and direction of the linear relationship between two variables
What is correlation coefficient?
The process by which one phosphate group is removed from ATP releasing usable energy for cross-bridge formation during skeletal muscle contraction.
What is ATP hydrolysis (ie. ATP breakdown)?
A mechanical system in which the effort force is located in the middle of the fulcrum and the load (weight).
What is a third-class lever?
Sensory nerves located within the muscles, tendons, and joints, which relay information regarding movement, muscle tension and our position in space back to the brain.
What are proprioceptors?
The state that Ms. C is moving back to in the U.S.?
What is New Hampshire?