2024 NSCA CSCS Practice Test 2 Guaranteed A+ Test | Actual Questions and Answers, Complete 100%
- What connective tissue attaches a muscle to a bone?
Answer: Tendon
- What substance is involved in muscular contraction at the neuromuscular
junction?
Answer: Acetylcholine
- What is the proper orientation for blood pressure notation, and what is considered
normal blood pressure?
Answer: Systole/Diastole; 120/80
- What cardiac phase is represented by diastole?
Answer: Diastole is the phase of the cardiac cycle where contraction of the left ventricle occurs, ejecting oxygen-rich blood toward the working tissues of the body.
- The sarcolemma in striated muscle tissue plays a significant role in muscular
contraction. What is the primary function of the sarcolemma?Answer: The sarcolemma is essential in conducting and receiving stimuli from the connecting nerve fibers. The ability of the sarcolemma to transduce electrical signal allows the t-tubules that run from side to side throughout the sarcolemma to release Ca2+ ions into the sarcoplasm.
- During muscular contraction, two specific proteins form a crossbridge that
generates movement. What are these two proteins called, and for what action during the crossbridge formation are they individually responsible?Answer: Actin is the thin filament, is arranged in a double helix shape, and serves as the binding site for myosin that, with the hydrolysis of ATP, generates a power stroke where the actin will slide past the myosin filament. The movement of actin and myosin is key in understanding the sliding filament theory of muscular contraction.
- Where in a muscle are essential elements of muscular contraction (i.e., glycogen,
fat, mitochondria) located?
Answer: The sarcoplasm
- What is the name of the most external layer of a single muscle fiber?
Answer: Endomysium
- During muscular contraction, which of the sarcomere does not move?
Answer: The A-Band 1 / 2
- Where are the contractile proteins in striated muscle located?
Answer: The sarcomere
- What does the sarcoplasmic reticulum store that is significant for muscular
contraction?
Answer: Calcium ions
- What protein is significant for initiating muscular contraction?
Answer: Troponin
- What is the all or nothing principle of muscular contraction?
Answer: The all-or-nothing principle specifically outlines that if an action potential is released onto the sarcolemma of a muscle, then a contraction will take place, and if there is no action potential present, then the muscle will not contract and remain relaxed.
- What muscle fiber type has the greatest capacity for force production and
hypertrophy?
Answer: Type IIb (2b)
- What anatomical structure is considered to be the "pacemaker" of the heart?
Answer: The sinoatrial node
- Fast twitch muscle fibers are type fibers
Answer: IIa & IIb (2a & 2b)
- Tendons connect to .
Answer: Muscle to bone
- Bradycardia is a slow .
Answer: Heart rate
- Proximal muscles are to the .
Answer: Closer, trunk
- The source of energy for muscle movement is called.
Answer: ATP
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