Exercise Science Fundamentals Flashcards
6 cards from real NASM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Exercise Science Fundamentals flashcards as text
What is the approximate MET value of a person walking at 3.5 mph on a flat surface?
Answer: 3–4 METs
Brisk walking at 3.5 mph corresponds to approximately 3–4 METs, classifying it as light-to-moderate intensity physical activity.
The epimysium is the connective tissue sheath that surrounds:
Answer: The entire muscle
The epimysium is the outermost connective tissue layer that encases the entire muscle belly.
Which neurotransmitter is released at the neuromuscular junction to initiate muscle contraction?
Answer: Acetylcholine
Acetylcholine (ACh) is released by motor neurons at the neuromuscular junction, binding to receptors on the muscle fiber to trigger depolarization.
Excess post-exercise oxygen consumption (EPOC) is primarily associated with:
Answer: Replenishing oxygen stores and restoring homeostasis after intense exercise
EPOC represents the elevated oxygen consumption after exercise used to restore phosphocreatine, clear lactate, and re-establish homeostasis.
Which of the following best defines 'motor unit'?
Answer: A motor neuron and all the muscle fibers it innervates
A motor unit consists of one alpha motor neuron and all the skeletal muscle fibers it controls, functioning as the basic unit of muscular force production.
Which receptor in the muscle belly detects changes in muscle LENGTH and triggers the stretch reflex?
Answer: Muscle spindle
Muscle spindles are intrafusal sensory receptors that detect changes in muscle length and rate of lengthening, initiating the myotatic (stretch) reflex.