2025 WITH ACTUAL CORRECT QUESTIONS AND VERIFIED DETAILED ANSWERS
|ALREADY GRADED A+
What is the neural circuitry that travels outside the spinal cord? - ✔ANSWER Peripheral
nervous system
Which muscle fiber type are the largest, and produce the most amount of force? - ✔ANSWER
Type IIx
The cross-bridge cycle requires energy, which is provided by - ✔ANSWER ATP hydrolysis.
The function of epimysium is to - ✔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? - ✔ANSWER Type IIx
Regarding the make-up of a person's muscle fiber ratio, which of the following is correct? -
✔ANSWER It can't be changed to a large degree
It is currently theorized that training with heavy loads causes - ✔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? - ✔ANSWER Fascia
Current research demonstrates what three possible mechanisms for inducing hypertrophy? -
✔ANSWER Mechanical tension, metabolic stress, muscle damage
,The functional units that can make a muscle shorten are: - ✔ANSWER Sarcomeres
Which of the following is found within the appendicular skeleton? - ✔ANSWER Bones of
the upper and lower extremities
Movement between two adjacent vertebrae is made possible by - ✔ANSWER Facet joints
Wolff's Law describes the way - ✔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? - ✔ANSWER
Bone development
Which of the following are mature bone cells that maintain a bone's matrix? - ✔ANSWER
Osteocytes
Bone-on-bone contact that results in joint pain and stiffness from a loss of articular cartilage is -
✔ANSWER osteoarthritis
Elastin, an important elastic protein found in all connective tissues, allows those tissues to -
✔ANSWER regain their original shape after being stretched out
Which of the following is a sensory receptor within a muscle that detects changes in length and
helps regulate contraction? - ✔ANSWER Muscle spindle
Which of the following are branches of the cell body that act as receivers, collecting
information from other neurons? - ✔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? - ✔ANSWER Acetylcholine
Which division of the peripheral nervous system controls voluntary movement? - ✔ANSWER
Somatic nervous system
Which type of motor unit can contract for many hours, or even days if necessary? - ✔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? - ✔ANSWER Fast fatigable (FF)
Voluntary movement starts in the - ✔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? - ✔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? - ✔ANSWER 43 pairs
The muscular system includes how many muscles? - ✔ANSWER Approximately 650
Which of the following terms refers to the main part or the shaft of a long bone? - ✔ANSWER
diaphysis
The frontal plane is an imaginary plane that divides the body into which of the following
segments? - ✔ANSWER Anterior and Posterior