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Grades A+
The process that allows a muscle spindle to contract at the same rate as
the muscle where it resides - Answer✔ Alpha-gamma Co-activation
How many nerves are contained within the peripheral nervous system -
Answer✔ 43 Pairs
The muscular system includes how many muscles - Answer✔
approximately 650
Muscle fiber type that's the largest & produce the most amount of force -
Answer✔ Type IIx
Cross-bridge cycle requires energy, which is provided by - Answer✔
ATP hydrolysis
The function of epimysium is too - Answer✔ Protect muscle from
friction against other muscles or bone.
Muscle fiber type has a very small amount of mitochondria - Answer✔
Type IIx
Make-up of a person's muscle fiber ratio - Answer✔ It can't be changed
to a large degree
Training with heavy loads causes - Answer✔ Equal growth of type I and
type II fibers
,Functions like girdles & guy wires to provide an interconnected
structure - Answer✔ Fascia
Three possible mechanisms for inducing hypertrophy - Answer✔
Mechanical tension, metabolic stress, muscle damage
functional units that can make a muscle shorten - Answer✔ Sarcomere
Found within the appendicular skeleton - Answer✔ Bones of the upper
& lower extremities
Movement between 2 adjacent vertebrae is made possible by - Answer✔
Facet Joints
Wolff's Law - Answer✔ The body responds by increasing or decreasing
the bone's diameter
Neural Circuitry that travels outside the spinal cord - Answer✔
Peripheral nervous system
A sensory receptor within a muscle that detects changes in length and
helps regulate contraction - Answer✔ Muscle Spindle
Branches of the cell body that act as receivers, collecting information
from other neurons - Answer✔ Dendrites
Muscle contraction is triggered when the following chemical
neurotransmitters binds to receptors on the muscle - Answer✔
acetylcholine
Division of the peripheral nervous system controls voluntary movement
- Answer✔ somatic nervous system
,Type of motor unit can contract for many hours - Answer✔ Slow of
Motor Unit
Type of motor unit has a large motor neuron & consists of a large bundle
of type IIx muscle fibers - Answer✔ Fast Fatiguable (FF)
Voluntary movement starts in - Answer✔ Cerebral Cortex
Cartilage plays important rolls such as - Answer✔ Bone development
Mature bone cells that maintain a bone's matrix - Answer✔ Osteocytes
Bone on bone contact that results in joint pain - Answer✔ osteoarthritis
Elastin allows tissues too - Answer✔ regain their original shape after
being stretched
The main part or shaft of a long bone - Answer✔ Diaphysis
Frontal plane is an imaginary plane that divides the body into -
Answer✔ Anterior & posterior
Angle that a joint rotates around its axis - Answer✔ The direction of
rotation
The smallest blood vessel - Answer✔ Capillaries
Create more muscular support when performing an intense exercise -
Answer✔ Bracing effect of a tight core
Largest lymphatic organ in the human body - Answer✔ Spleen
, One of the main functions of the respiratory system - Answer✔ removal
of waste products of metabolism
The formation of glucose from noncarbohydrate sources - Answer✔
gluconeogenesis
Lactate threshold corresponds with - Answer✔ Rapid drop in physical
output & performance
Actions occur within the mitochondria during the first 10-30 seconds of
maximal activity - Answer✔ Mitochondria absorb protons (H+)
Enzyme breaks down triglycerides into fatty acids during lipolysis -
Answer✔ Hormone-sensitive lipase
Fuel type produces 106 ATP - Answer✔ Fatty acids
Mechanics are divided into two categories - Answer✔ dynamic and
static.
Class of lever is the fulcrum (axis) located between the effort and the
load - Answer✔ First-class
a state of no acceleration, with the body at rest - Answer✔ Equilibrium
Point at which both body mass & weight are equally distributed -
Answer✔ center of gravity.
Force is a product of - Answer✔ mass times acceleration.
shearing refers too - Answer✔ cutting or breaking.