12th Grade Anatomy & Physiology

Front

What are the four key characteristics of muscle tissue?

Back

Excitability, Contractility, Extensibility, Elasticity

Front

What type of muscle is voluntary and striated?

Back

Skeletal Muscle

Front

What type of muscle is involuntary and found in the heart?

Back

Cardiac Muscle

Front

What is the basic unit of muscle tissue?

Back

Muscle Fiber (Cell)

Front

What is a fascicle?

Back

A bundle of muscle fibers.

Front

What defines the boundary of a sarcomere?

Back

Z-line

Front

What is the functional unit of a muscle fiber?

Back

Sarcomere

Front

What pulls on actin to shorten the sarcomere?

Back

Myosin (thick filaments)

Front

What is required for myosin heads to bind, pull, and release actin?

Back

ATP (Adenosine Triphosphate)

Front

What are Slow-Twitch Fibers good for?

Back

Endurance; use oxygen efficiently.