Muscular System Labeling and Movements

The point of muscle attachment to an immovable or less movable bone is known as the ________.

• innervation

• origin

• insertion

• action

Muscles that perform opposite actions to one another are termed ________.

• synergists

• prime mover

• antagonist

• fixator

The arrangement of fascicles in orbicularis oris is ________.

• circular

• convergent

• pennate

• fusiform

The prime mover of arm abduction is the ________ muscle.

• trapezius

• deltoid

• triceps brachii

• biceps brachii

Jason injured his hamstring muscle group during football practice. He will be unable to perform ________.

• thigh extension and knee flexion

• dorsiflexion

• thigh abduction and adduction

• leg rotation and plantar flexion

Which of the following is an example of an isometric contraction?

• shaking the head as to say "no"

• pushing against an immovable wall

• bending the elbow

• rotating the arm

• nodding the head as to say "yes"

Which of the following is a type isometric exercise in which muscles increase in size and strength?

• swimming

• biking

• jogging

• lifting weights

• dancing

Which of these muscles is the prime mover of elbow extension?

• brachialis

• latissumus dorsi

• deltoid

• triceps brachii

• biceps brachii

Which of these muscles is located on the ventral (anterior) side of the body?

• pectoralis major

• occipitalis

• gastrocnemius

• gluteus maximus

• latissimus dorsi

What is the main function of the quadriceps group?

• arm flexion

• hand supination

• thigh abduction

• knee extension

• foot inversion