KIN 2504 Exam 2 UPDATED ACTUAL Questions And Correct Answers
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Terms in this set (222)
What is the composition of the adult human skeletal Composed of 206 bones
system?
What are the three types of joints? Fibrous, Cartilaginous, Synovial
What type of joint allows virtually no movement? Fibrous joints (e.g., sutures of the skull)
What type of joint allows considerable movement? Synovial joints (e.g., elbows and knees)
What is the function of ligaments? Connects the ends of bones to other bones or supports organs
What is the role of cartilage in joints? Acts as a cushion between the bones
What is a tendon? A tough, fibrous structure that connects muscles to bones
What percentage of an average person's body mass is Approximately 40%
made up of muscles?
What is hypertrophy in muscle fibers? An increase in the size of muscle fibers, usually from overload
What is atrophy in muscle fibers? A decrease in the size of muscle fibers, usually due to inactivity
What are the two main types of muscle fibers? Slow-twitch and fast-twitch muscle fibers
What is the difference in muscle fiber composition Long-distance athletes have primarily slow-twitch fibers; sprinters have primarily
between long-distance athletes and sprinters? fast-twitch fibers.
What is a motor unit? An α-motor neuron and all of the muscle fibers it innervates
, What is the All or None Principle in muscle contraction? All muscle fibers in a motor unit contract simultaneously when stimulated.
What is the Size Principle in motor units? Motor units are recruited from smaller to larger based on the force required.
What is the role of myelin in the nervous system? Insulates the axon and speeds up nerve impulse conduction.
What adaptations occur in strength training? Increases in strength often precede changes in muscle size.
How does strength training benefit metabolic health? Improves glucose metabolism and increases maximal oxygen consumption.
What is the typical distribution of muscle fiber types in A relatively even mixture of slow-twitch and fast-twitch fibers.
untrained individuals?
What is the function of myofibrils in muscle fibers? They are protein structures that make up muscle fibers.
What is the significance of satellite cells in muscle fibers? They provide additional nuclei for muscle cell growth and repair.
What is hyperplasia in muscle fibers? An increase in the number of muscle fibers, though controversial in humans.
What is the impact of stronger muscles on heart health? Reduces the demand on the heart during daily activities.
What is the role of connective tissue in skeletal muscles? Provides structure and support to muscle fibers.
What is the function of the vertebral column? Provides support and flexibility to the upper body.
How many cervical vertebrae are in the human spine? 7 cervical vertebrae
What are the five lumbar vertebrae responsible for? Support in the lower back region.
What role does muscular fitness play in health? It reduces all-cause mortality risk beyond what is observed with aerobic exercise
only.
What are important health-related fitness characteristics? FFM and resting metabolic rate, bone mass, muscle mass, glucose tolerance,
musculotendinous integrity, and the ability to carry out daily activities.
What is 1 repetition maximum (1RM)? The greatest amount of weight that can be lifted with proper technique for only
one repetition.
What is the difference between strength and endurance Strength is the most weight lifted in 1 repetition, while endurance is the most
in resistance training? repetitions completed.
What factors influence training frequency? Overall physical stress, other aerobic or anaerobic training, sport skill practice,
and physically demanding occupations.
What are core exercises? Exercises that recruit one or more large muscle groups and use two or more
primary joints.
What are assistance exercises? Exercises that recruit smaller muscle areas and involve only one primary joint.
C
Terms in this set (222)
What is the composition of the adult human skeletal Composed of 206 bones
system?
What are the three types of joints? Fibrous, Cartilaginous, Synovial
What type of joint allows virtually no movement? Fibrous joints (e.g., sutures of the skull)
What type of joint allows considerable movement? Synovial joints (e.g., elbows and knees)
What is the function of ligaments? Connects the ends of bones to other bones or supports organs
What is the role of cartilage in joints? Acts as a cushion between the bones
What is a tendon? A tough, fibrous structure that connects muscles to bones
What percentage of an average person's body mass is Approximately 40%
made up of muscles?
What is hypertrophy in muscle fibers? An increase in the size of muscle fibers, usually from overload
What is atrophy in muscle fibers? A decrease in the size of muscle fibers, usually due to inactivity
What are the two main types of muscle fibers? Slow-twitch and fast-twitch muscle fibers
What is the difference in muscle fiber composition Long-distance athletes have primarily slow-twitch fibers; sprinters have primarily
between long-distance athletes and sprinters? fast-twitch fibers.
What is a motor unit? An α-motor neuron and all of the muscle fibers it innervates
, What is the All or None Principle in muscle contraction? All muscle fibers in a motor unit contract simultaneously when stimulated.
What is the Size Principle in motor units? Motor units are recruited from smaller to larger based on the force required.
What is the role of myelin in the nervous system? Insulates the axon and speeds up nerve impulse conduction.
What adaptations occur in strength training? Increases in strength often precede changes in muscle size.
How does strength training benefit metabolic health? Improves glucose metabolism and increases maximal oxygen consumption.
What is the typical distribution of muscle fiber types in A relatively even mixture of slow-twitch and fast-twitch fibers.
untrained individuals?
What is the function of myofibrils in muscle fibers? They are protein structures that make up muscle fibers.
What is the significance of satellite cells in muscle fibers? They provide additional nuclei for muscle cell growth and repair.
What is hyperplasia in muscle fibers? An increase in the number of muscle fibers, though controversial in humans.
What is the impact of stronger muscles on heart health? Reduces the demand on the heart during daily activities.
What is the role of connective tissue in skeletal muscles? Provides structure and support to muscle fibers.
What is the function of the vertebral column? Provides support and flexibility to the upper body.
How many cervical vertebrae are in the human spine? 7 cervical vertebrae
What are the five lumbar vertebrae responsible for? Support in the lower back region.
What role does muscular fitness play in health? It reduces all-cause mortality risk beyond what is observed with aerobic exercise
only.
What are important health-related fitness characteristics? FFM and resting metabolic rate, bone mass, muscle mass, glucose tolerance,
musculotendinous integrity, and the ability to carry out daily activities.
What is 1 repetition maximum (1RM)? The greatest amount of weight that can be lifted with proper technique for only
one repetition.
What is the difference between strength and endurance Strength is the most weight lifted in 1 repetition, while endurance is the most
in resistance training? repetitions completed.
What factors influence training frequency? Overall physical stress, other aerobic or anaerobic training, sport skill practice,
and physically demanding occupations.
What are core exercises? Exercises that recruit one or more large muscle groups and use two or more
primary joints.
What are assistance exercises? Exercises that recruit smaller muscle areas and involve only one primary joint.
