Chapter 7- quiz questions

What does the term force refer to?

The ability of one entity to act on another entity, causing acceleration or deceleration

The muscles of the lower leg, hamstrings, and low back region make up which of the following global muscular subsystems?

Deep Longitudinal Subsystem (DLS)

What concept describes how the function of one segment of the body can impact other areas?

The regional Interdependence of movement system.

What is the imaginary line that bisects the body into right and left sides?

The sagital plane

What are the three overarching types of muscle actions?

Isotonic, Isometric, and Isokinetic.

One of the most important concepts in motor control is that muscles are recruited by the nervous system in groups. What are these groups called?

Muscle Synergies

Which of the following muscle groups work eccentrically in the sagittal plane during the lowering phase of the squat?

Quadriceps

What is the anatomical term that describes something positioned above an identified reference point?

Superior

During normal walking, the pelvis rotates in what plane to facilitate the necessary momentum for the swing phase?

Transverse

Which concept should be used to describe the functioning of the serratus anterior as it assists the anterior deltoid during shoulder flexion?

Synergist

How should the amortization phase of the stretch-shortening cycle be described?

The transition from eccentric loading to concentric unloading

During a squat, which muscle group isometrically contracts to prevent unnecessary thigh movement in the frontal plane?

Hip abductors

What type of lever could be described as having a fulcrum in the middle like a seesaw?

First class

Which of the following benefits may occur as a result of exercises that comprise only eccentric muscle actions that are appropriately loaded?

Increased anabolic hormone stimulation

How is an isokinetic muscle contraction best described?

A contraction that occurs when the speed of movement is fixed and the resistance varies with the force exerted

The anterior oblique subsystem includes which of the following muscle groups?

Adductor (inner) thigh muscles, obliques, and hip external rotators

Which muscle functions as part of the global muscular system?

Erector spinae

Which of the following statements would be accurate with regard to muscle force and velocity during a concentric contraction?

As the velocity of the muscle action increases, its ability to produce force decreases.

Movements that take place within a joint and are not visible to the human eye may be classified in what way?

Arthrokinematic

Movement represents the integrated functioning of which three main body systems?

Muscular, nervous, and skeletal

What movement term is used to describe the concept of adducting the shoulder blades so that they become closer together?

Scapular retraction

What is the most accurate description of motor control?

The ability to initiate and correct purposeful controlled movements

Which of the following force couples is accurately linked to the movement created by their combined action?

Internal and external obliques functioning to create trunk rotation

Which muscle functions in a feed-forward mechanism in anticipation of limb movements?

Multifidus

The deep longitudinal subsystem includes which of the following muscle groups?

Hamstrings and erector spinae

Which concept should be used to describe the functioning of the serratus anterior as it assists the anterior deltoid during shoulder flexion?

Synergist

The posterior oblique subsystem includes which of the following muscle groups?

Thoracolumbar fascia and contralateral gluteus maximus

What is the concept used to describe the action of muscles that have the ability to contract automatically in anticipation of movement?

Feed-forward

During a squat, the lowering phase would be described as what type of muscle action?

Eccentric

Which of the following statements would be accurate with regard to muscle force and velocity during an eccentric muscle action?

As the contraction velocity increases the ability to develop force also increases.

Which of the following muscles is primarily targeted when performing a biceps curl exercise with the thumb up?

Brachioradialis

What is the most accurate description of motor control?

The ability to initiate and correct purposeful controlled movements

What is a key mechanism involved in internal feedback?

Proprioception

What is the anatomical term that describes something positioned on the opposite side of the body?

Correct

Contralateral

What measurement is dependent upon the length of the lever arm and the angle between the force application and the lever arm?

Torque

What term is used to describe the concept of how the functioning of one body segment can impact other areas of the body?

Regional interdependence

What type of muscle action would expend the highest amount of energy at a fixed resistance level over a comparable duration?

Concentric

During a squat, which muscle group isometrically contracts to prevent unnecessary thigh movement in the frontal plane?

Hip abductors

In what plane of movement do shoulder horizontal adduction and abduction occur?

Transverse

Overactive hip flexors may lead to which of the following postural compensations?

Anterior tilting of the pelvis and an increased low-back arch

Which of the following solutions would allow an individual to achieve a greater depth during the lowering phase of the squat if ankle stiffness is the cause?

Place a small board under the heels