Chapter 7 quiz NASM

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

Brachioradialis

Which of the following muscle groups work both eccentrically and concentrically in the sagittal plan during a squat?

Quadriceps

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

Quadriceps

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

Stored energy from an efficiently functioning stretch-shortening cycle is released during which muscle action?

concentric

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

transverse

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

What is the most accurate description of motor control?

The ability to initiate and correct purposeful controlled movements

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

The transition from eccentric loading to concentric unloading

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

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

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.

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 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.

Pronation of the foot describes what multiplanar movements?

Eversion, dorsiflexion, and ankle abduction

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

Hamstring and erector spinae

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

Increased anabolic hormone stimulation

Which subsystem is responsible for providing both frontal plane mobility and stabilization of the lumbo-pelvic-hip complex?

Lateral subsystem

In order to optimally load muscle during the eccentric phase, the fitness professional should recommend which of the following?

Lower the weight more slowly to increase time under tension

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

Multifidus

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

Muscular, nervous, and skeletal

Improved performance during a plyometric jump is dependent upon which of the following?

Rapid amortization phase

The upper trapeziums works with what muscle as a force couple to create upward rotation of the scapula?

Serratus anterior

Which of the following effects may occur if the amortization phase of a plyometric exercise is prolonged?

Stored energy will dissipate, and the unloading phase will be less powerful.

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

Superior

Which of the following examples describes a muscle that is functioning as an antagonist?

The biceps brachii being active during elbow extension

Performing a bicep curl with a dumbbell in the hand is an example of which type of lever?

Third class

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

Thoracolumbar fascia and contralateral gluteus maximus

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

hip abductors

Which type of exercise accommodates effort whereby the harder the individual pushes or pulls, the more resistance they feel, despite the movement speed remaining constant?

isokinetic

What is a key mechanism involved in internal feedback?

proprioception

What is the scientific term that describes the nervous systems role in the contract/relax relationship between agonists and antagonists?

reciprocal inhibitionq

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

transverse plane