Skeletal Muscle System

What is the outermost connective tissue layer surrounding an entire muscle called?

Epimysium

Which connective tissue surrounds individual muscle fibers?

Endomysium

The bundle of muscle fibers surrounded by the perimysium is called a:

Fascicle

Which structure is responsible for transmitting electrical impulses deep into the muscle fiber?

T-tubules

What is the basic functional unit of a skeletal muscle fiber?

Sarcomere

What is the primary function of the skeletal muscle system?

Movement of the body

The protein responsible for binding calcium during muscle contraction is:

Troponin

Which of the following is the thick filament protein involved in muscle contraction?

Myosin

What ion is necessary for muscle contraction to occur?

Calcium

What term refers to the point of attachment where a muscle remains stationary during contraction?

Origin

The thin filament in a muscle fiber is composed primarily of:

Actin

Skeletal muscles contribute to body heat production through:

Muscle contractions

What is the role of ATP in muscle contraction?

Provides energy for the cross-bridge cycle

Which of the following is the middle layer of connective tissue surrounding muscle fibers grouped in fascicles?

Perimysium

Which of the following is a function of skeletal muscles in relation to joints?

Stabilizing joints

The plasma membrane of a muscle fiber is called the:

Sarcolemma

Which type of contraction occurs when a muscle generates force without changing length?

Isometric

What structure stores calcium in a muscle fiber?

Sarcoplasmic reticulum

Which term refers to the attachment of a muscle to a bone that moves during contraction?

Insertion

Which structure functions as a regulatory protein by covering actin binding sites?

Tropomyosin

What is the arrangement called when muscle fibers are arranged in concentric rings around an opening?

Circular

Which muscle fiber arrangement has a broad origin and converges toward a single tendon of insertion?

Convergent

Which of the following muscle fiber arrangements is best suited for producing maximum range of motion?

Parallel

The skeletal muscle system is involved in voluntary movement, meaning:

It contracts when consciously controlled by the brain

What is the term for a muscle arrangement in which fascicles insert into one side of the tendon?

Unipennate

Which term refers to a muscle that is primarily responsible for producing a specific movement?

agonist

When performing a bicep curl, which muscle acts as the antagonist?

Triceps brachii

A muscle that assists the prime mover by adding force to a movement and prevent secondary movement is called a:

Synergist

When slowly lowering your body during a squat, the muscle is performing which type of contraction?

eccentric

What type of contraction involves the both muscle lengthening and shortening while under tension?

Isokinetic