What is the neural circuitry that travels outside the spinal cord? - correct answer ✔✔Peripheral nervous
system
Which of the following is a sensory receptor within a muscle that detects changes in length and helps
regulate contraction? - correct answer ✔✔Muscle spindle
Which of the following are branches of the cell body that act as receivers, collecting information from
other neurons? - correct answer ✔✔Dendrites
A cascade of events, resulting in muscle contraction, is triggered when which of the following chemical
neurotransmitters binds to receptors on the muscle? - correct answer ✔✔Acetylcholine
Which division of the peripheral nervous system controls voluntary movement? - correct answer
✔✔Somatic nervous system
Which type of motor unit can contract for many hours, or even days if necessary? - correct answer
✔✔Slow (S) of Motor Unit
Which type of motor unit has a large motor neuron and consists of a large bundle of type IIx muscle
fibers? - correct answer ✔✔Fast fatigable (FF)
Voluntary movement starts in the - correct answer ✔✔cerebral cortex
Which of the following is the process that allows a muscle spindle to contract at the same rate as the
muscle where it resides? - correct answer ✔✔Alpha-gamma co-activation
,How many nerves are contained within the peripheral nervous system, which includes all the neurons
and glia outside of the brain and spinal cord? - correct answer ✔✔43 pairs
The muscular system includes how many muscles? - correct answer ✔✔Approximately 650
Which muscle fiber type are the largest, and produce the most amount of force? - correct answer
✔✔Type IIx
The cross-bridge cycle requires energy, which is provided by - correct answer ✔✔ATP hydrolysis.
The function of epimysium is to - correct answer ✔✔protect muscle from friction against other muscles
or bone.
With regard to mitochondrial density, which muscle fiber type has a very small amount of mitochondria?
- correct answer ✔✔Type IIx
Regarding the make-up of a person's muscle fiber ratio, which of the following is correct? - correct
answer ✔✔It can't be changed to a large degree
It is currently theorized that training with heavy loads causes - correct answer ✔✔equal growth of type I
and type II fibers.
Which of the following functions like girdles and guy wires to provide an interconnected structure? -
correct answer ✔✔Fascia
Current research demonstrates what three possible mechanisms for inducing hypertrophy? - correct
answer ✔✔Mechanical tension, metabolic stress, muscle damage
The functional units that can make a muscle shorten are: - correct answer ✔✔Sarcomeres
, Which of the following is found within the appendicular skeleton? - correct answer ✔✔Bones of the
upper and lower extremities
Movement between two adjacent vertebrae is made possible by - correct answer ✔✔Facet joints
Wolff's Law describes the way - correct answer ✔✔the body responds by increasing or decreasing the
bone's diameter
In addition to being a barrier to pain, what important role does cartilage play? - correct answer ✔✔Bone
development
Which of the following are mature bone cells that maintain a bone's matrix? - correct answer
✔✔Osteocytes
Bone-on-bone contact that results in joint pain and stiffness from a loss of articular cartilage is - correct
answer ✔✔osteoarthritis
Elastin, an important elastic protein found in all connective tissues, allows those tissues to - correct
answer ✔✔regain their original shape after being stretched out
Which of the following terms refers to the main part or the shaft of a long bone? - correct answer
✔✔diaphysis
The frontal plane is an imaginary plane that divides the body into which of the following segments? -
correct answer ✔✔Anterior and Posterior
The angle that a joint rotates around its axis is referred to as - correct answer ✔✔the direction of
rotation
What term describes the smallest blood vessels in the human body? - correct answer ✔✔capillaries
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