NASM Chapter 5 Quiz

Weight-bearing exercise helps strengthen bones through what process? A. Lengthening B. Remodeling C. Osteoporosis D. Neuroplasticity

B

What is a characteristic of a type II muscle fiber? A. Increased oxygen delivery B. Short-term contractions C. Slow to fatigue D. Smaller in size

B

What is it called when a ligament is overstretched or torn? A. A strain B. A sprain C. A twist D. A pull

B

What is the name of the specialized cell that is the functional unit of the nervous system? A. Axon B. Neuron C. Nucleus D. Spindles

B

What are the two categories of bone markings? A. Surface and deep B. Irregular and flat C. Depressions and processes D. Short and long

C

What is the bone type of the clavicle, radius, and ulna? A. Irregular B. Short C. Long D. Flat

C

When a client's heart rate is raised during cardio activities, this is being caused by which system? A. Parasympathetic nervous system B. Sympathetic nervous system C. Somatic nervous system D. Central nervous system

B

Which characteristic is exhibited by type I muscle fibers? A. Decreased oxygen delivery B. Slow to fatigue C. Short-term contractions D. Fewer capillaries

B

Which joint has the simplest movement, moving either back and forth or side to side? A. Synovial B. Nonaxial C. Nonsynovial D. Condyloid

B

Calcium is often associated with bone health, but why is it also important for muscular function? A. It helps transmit the motor signal. B. It converts ADP back to ATP. C. It stimulates actin and myosin activity. D. It helps the nerve impulse cross from the synapse into the muscle.

C

What is the concept that describes the human body as a chain of interdependent links that work together to perform movement? A. Golgi tendon organ B. Nervous system C. Kinetic chain D. Proprioception

C

What is the primary purpose of the peripheral nervous system? A. To coordinate the activity of all parts of the body B. To transmit impulses between afferent and efferent neurons C. To connect the central nervous system to the rest of the body D. To transmit nervous impulses from neuron to neuron

C

Which joint is the most mobile, able to move in all three directions? A. Pivot B. Saddle C. Ball-and-socket D. Hinge

C

Which of the following protein structures is important for muscular contractions by providing a binding site? A. Actin B. Myosin C. Troponin D. Fascicles

C

Which system supplies neural input to organs that run the involuntary processes of the body? A. Somatic nervous system B. Mechanoreceptors C. Autonomic nervous system D. The brain

C

A person walks differently when they move from a sidewalk onto the sand. This is regulated by what function? A. Muscle function B. Neuroplasticity C. Wolff's law D. Motor function

D

Humans can learn new things at any stage of life, due to which process that causes the brain to reform neural pathways? A. Neurocircuitry B. Neuromotor skills C. Remodeling D. Neuroplasticity

D

What best describes the all-or-nothing principle? A. All muscle fibers contract, or none at all do. B. The switch from type I to type II muscle fibers C. The switch from type IIa to type IIx muscle fibers D. A motor unit will either contract maximally or not at all.

D

What is the correct order of fascia, starting with the most superficial? A. Endomysium, perimysium, epimysium B. Perimysium, endomysium, epimysium C. Epimysium, endomysium, perimysium D. Epimysium, perimysium, endomysium

D

What is the correct order of segments for the spine, starting at the top? A. Thoracic, cervical, and lumbar B. Cervical, lumbar, and thoracic C. Lumbar, cervical, and thoracic D. Cervical, thoracic, and lumbar

D

Which of these is one of the major curvatures of the spine from a posterior view? A. Convex lumbar curve B. Convex cervical curve C. Concave thoracic curve D. Concave lumbar curve

D

What is explained by the sliding filament theory? A. The shortening of a sarcomere to produce a muscle contraction B. The lengthening of a sarcomere after a muscle contraction C. The actin pulling the myosin toward the center of the sarcomere D. The Z-lines moving farther apart

A

What is the fibrous tissue that connects bone to bone? A. Ligament B. Collagen C. Tendon D. Elastin

A

What is the purpose of the intervertebral discs? A. They act as shock absorbers. B. They minimize movement of the spine. C. They support most of the body's weight and are attached to many back muscles. D. They provide support for the head.

A

What surrounds the skeletal muscles and connects them to other surrounding muscles? A. Fascia B. Connective tissues C. Tendons D. Muscle spindles

A

Which mechanoreceptor is sensitive to changes in muscular tension and rate of that tension change, causing the muscle to relax, which prevents the muscle from excessive stress and possible injury? A. Golgi tendon organs B. Joint receptors C. Muscle spindles D. Interneurons

A

Which of the following is the functional unit of a muscle cell? A. A sarcomere B. Actin C. Myosin D. Endomysium

A

Which system puts the body into a relaxed state, termed rest and digest? A. Parasympathetic nervous system B. Sympathetic nervous system C. Somatic nervous system D. Central nervous system

A

Which term describes the movement of bones, such as flexion and extension? A. Osteokinematics B. Arthrokinematics C. Osteoporosis D. Arthropathy

A

Which type of muscle fiber has a large number of capillaries? A. Type I B. Type IIa C. Type III D. Type IIx

A

Which type of muscle fiber is predominantly used during movements that require high levels of force and power, such as a sprint? A. Type II B. Type I C. Type III D. Type Ia

A