Exam 2 Flashcards by Taylin Gerner

After an electrical impulse travels across the sarcolemma, where does it enter the muscle fiber

T-tubule

How well did you know this?

Not at all

Perfectly

Training techniques to maximize muscular force will do what to the GTOs

Enhance

How well did you know this?

Not at all

Perfectly

The autonomic nervous system is responsible for

unconscious physiological function
“fight or flight”
Maintain normal resting functions

How well did you know this?

Not at all

Perfectly

Which proprioceptor monitors the stretch and length of the muscle

Muscle spindle

How well did you know this?

Not at all

Perfectly

Which of the following is a neural adaptation that will increase force output

increase neural drive

How well did you know this?

Not at all

Perfectly

In order to receive an action potential, receptors on an excitable cell bind with what specialized proteins

neurotransmitters

How well did you know this?

Not at all

Perfectly

What is another term for a nerve impulse

How well did you know this?

Not at all

Perfectly

A bundle of muscle fibers is termed as this

Fasciculus

How well did you know this?

Not at all

Perfectly

What is the purpose of the axon hillock

Summation of the threshold to initiate an action potential

How well did you know this?

Not at all

Perfectly

What muscle action is defined by no change in length of the muscle fiber

Isometric

How well did you know this?

Not at all

Perfectly

Muscle growth from long-term resistance training is primarily due to the increase in this

size of the individual muscle fibers

How well did you know this?

Not at all

Perfectly

What is a key characteristic of connective tissue

a elastic component

How well did you know this?

Not at all

Perfectly

Which repeated bout theory suggests that the synthesis of protective proteins helps reduce muscle damage

Cellular

How well did you know this?

Not at all

Perfectly

What speed of neurological velocity is associated with type I muscle fibers

slow

How well did you know this?

Not at all

Perfectly

What is the best use of the force-velocity curve

To determine the inverse relationship between force and velocity

How well did you know this?

Not at all

Perfectly

During a muscle action, calcium binds to

Troponin

How well did you know this?

Not at all

Perfectly

According to Armstrong’s sequence, what directly results in pain receptors being activated during DOMS

Edema

How well did you know this?

Not at all

Perfectly

how you should prescribe practice to develop motor skills

high volume
short duration
high frequency

How well did you know this?

Not at all

Perfectly

actin molecule

projects from the Z line

How well did you know this?

Not at all

Perfectly

What is the name for an alpha motor neuron and all of the muscle fibers it innervates

motor unit

How well did you know this?

Not at all

Perfectly

Which of the following fiber type has the highest myoglobin content

Type I

How well did you know this?

Not at all

Perfectly

What is the ultimate goal of motor learning and control

efficiency of neuromuscular system

How well did you know this?

Not at all

Perfectly

The action of actin and myosin filaments moving over each other to produce force is referred to as what

sliding filament theory

How well did you know this?

Not at all

Perfectly

Which of the following is a component of a neuron

dendrite

How well did you know this?

Not at all

Perfectly

Which of the following can negatively influence the successful completion of a motor program

- perceived stress - muscular fatigue - lack of focus

The motor cortex is housed in which lobe of the cerebral cortex

frontal

During depolarization, what happens to Na+

enters the cell

What division of the peripheral nervous system is responsible for maintaining normal resting function

Parasympathetic

What category of nerves send signals to the central nervous system from sensors

Afferent

If a significant enough threshold is reached to recruit a motor unit

all the muscle fibers will fire

What is the primary cause of acute muscle soreness

Acid

When is delayed onset muscle soreness typically felt after a strenuous workout

12 - 48 hours

What is the main cause of delayed muscle soreness

structural damage to muscle fibers

Which type of practice grouping would result in the quickest skill development, but not the best long term retention

Short, intense, frequent practice sessions

What is a characteristic of Type II muscle fibers

high intramuscular PCr stores

When an action potential reaches a muscle fiber, what does calcium bind to within the myofibril

troponin

Which of the following will trigger the sympathetic nervous system

exercise

In terms of maximizing performance, which of the following activities would benefit most from a low level of arousal

golf swing

part of the peripheral nervous system

- Autonomic nervous system - Sensory-somatic nervous system - Sympathetic nervous system

According to the size principle, what type of motor units would be recruited first

small muscle fibers

What is a characteristic of an alpha motor neuron

Short dendrites

What happens during a concentric muscle action

H zone disappears

At its resting length, this section of a sarcomere contains only actin

I band

Where is the site of reflex actions

spinal cord

What is a sarcomere

Smallest functioning unit of the muscle

In order to reduce the occurrence of DOMS, what needs to be reduced

Eccentric muscle actions

What is hypertrophy

Increase in the size of the individual muscle fibers

Which branch of the nervous system is most heavily used for motor control

Somatic

What is formed that dictates the amount of force that can be produced by a muscle

Actomyosin complex

What is the best use of the force-time curve

To determine muscular power

What part of the muscle cell contains ATPase

Myosin

Which stage of skill development may take several months to years to reach

Autonomous

force modulators

- velocity - time - length

primary functions of the nervous system

- conscious awareness - perception - bodily movement

What is the name of the fatty substance that can cover an axon

Myelin sheath

Which of the following activities would be considered an open skill

Quarterback making a pass in a game (quick decision)

What two cations are responsible for maintaining the resting membrane potential

Na+ and K+

Which type of neurons carries messages from the sensory receptors to the CNS

Sensory

What part of the brain is considered the "conscious" part

Cerebrum

What is the correct order for the connective tissue going from the muscle to the myofibril level

Epimysium, perimysium, and endomysium

muscle fibers of a motor unit

All the muscle fibers are the same type

Which proprioceptor is located within the skeletal muscle

Muscle spindle

Which of the following is an adaptation to the muscle fibers from endurance training

Increase capillaries per muscle fiber

The ability of an organism to maintain internal equilibrium is termed as

Homeostasis

What send signals to the sensory-somatic nervous system

Muscles

Which proprioceptor monitor the stretch and length of the muscle

Muscle spindle

Where is calcium stored within a muscle fiber

Sarcoplasmic reticulum

What is first step according to Armstrong’s sequence

Structural damage to the muscle fiber

What is termed as the point of connection and communication between two excitable cells

Synapse

sub-area of motor behavior

- motor learning - motor development - motor control

What is a purpose of proprioception

Senses the body in space

Exam 2 Flashcards

(71 cards)