Muscular System Overview
This type of muscle is voluntary and attached to bones for movement.
What is skeletal muscle?
The basic unit of contraction in muscle fibers.
What is a sarcomere?
The largest structural unit of muscle tissue, made up of fascicles.
What is a muscle?
This is the longest muscle in the human body, known for helping you cross your legs.
What is the sartorius?
This muscle type is found in the heart and is involuntary.
What is cardiac muscle?
This protein in muscle fibers binds calcium to trigger muscle contraction.
What is troponin?
These are bundles of muscle fibers grouped together within a muscle.
What is a fascicle?
This muscle is often referred to as the "heart muscle."
What is cardiac muscle?
This type of muscle is involuntary and found in the walls of organs like the stomach and blood vessels.
What is smooth muscle?
This thick filament protein generates force during contraction by interacting with actin.
What is myosin?
This connective tissue surrounds individual muscle fibers.
What is endomysium?
This muscle group is responsible for flexing the knee and extending the hip.
What are the hamstrings?
The primary function of the muscular system, involving the generation of force and movement.
What is contraction?
The name of the protein that covers actin filaments and blocks myosin binding sites at rest.
What is tropomyosin?
This connective tissue surrounds a fascicle of muscle fibers.
What is perimysium?
This muscle accounts for most of the mass of your upper arm and is responsible for elbow flexion.
What is the biceps brachii?
The protein responsible for muscle contraction by interacting with actin and myosin filaments.
What is calcium (or calcium ions)?
The term for the membrane that surrounds muscle fibers and helps transmit action potentials.
What is the sarcolemma?
The outermost connective tissue layer that surrounds the entire muscle.
What is epimysium?
This tiny muscle in the eye allows you to squint.
What is the orbicularis oculi?