Muscular System

What are the 3 types of muscle tissue?

• Thigh, Calf, & Shoulder
• Traps, Forearm, & Abs
• Hamstring, Biceps, & Triceps
• Smooth Muscle, Cardiac Muscle, & Skeletal Muscle

When a muscle contracts, it _______

• gets longer
• gets shorter
• gets thinner
• grows hair

Voluntary muscle is

• muscle that has to be told when to move
• muscle that moves automatically
• muscle that needs to be stretched regularly
• muscle that makes up the heart and stomach

What is the name of the thin filaments in the myofibrils?

• Actin
• Myosin
• Myoglobin
• Titan

What is the name of the thick filaments in the myofibrils?

• Actin
• Myosin
• Myoglobin
• Titan

The contractile unit of a myofibril is called the _______.

• Sarcolemma
• Sarcoplasmic reticulum
• Sarcoplasm
• Sarcomere

The enzyme that breaks down the muscle cell neurotransmitter and ends the impulse is called ______.

• lactase
• sucrase
• lipase
• acetylcholinesterase

• Latissmius Dorise
• Erectors
• Deltoids
• Abdominal

• Trapezius
• Gluteals
• Deltoid
• Hamstring

• Glutueal
• Hamstring
• Quadricep
• External Oblique