Organ System
Facilitate movement of the body
How do muscles get energy?
ATP (adenosine triphosphate)
What connective tissue surrounds and protects individual muscle fiber, that provides support and structure?
Endomysium
What cells make up skeletal muscle and help with movement?
Muscle fibers
what are capillaries?
these structures are responsible for carrying nutrients and oxygen to muscle cells and removing waste products.
What is the role of the diaphragm?
Helps in breathing by contracting and flattening, which helps the lungs expand
What are muscles made of?
Muscle fibers containing proteins such as actin and myosin
What are the 3 connective tissue layers?
Skeletal muscle, smooth muscle, and cardiac muscle
What type of cells help you run fast but get tired quickly?
Fast-twitch muscle fibers
what are mitochondrion?
this rod-shaped organelle is the powerhouse of the cell, producing ATP for muscle contraction.
How do tendons connect muscles to bones?
Tendons are strong, fibrous tissues that allow force to be transferred from muscles to bones, enabling movement.
What is the difference between voluntary and involuntary muscles?
Voluntary: under conscious control, allowing to move intentionally
Involuntary: Operate automatically, no conscious thought when moving
What terms refer to the functional unit of skeletal muscle, where contraction occurs?
Sarcomere
What are skeletal muscle cells?
These type of muscle cell is responsible for voluntary movements and is attached to bone by tendons
what are myofibrils?
These thread like structures within muscle fibers are composed of actin and myosin and are responsible for muscle contraction.
What are common injuries in the muscular system?
Strains, tendinitis, and muscle tears
These Muscle are found in the walls of hallow organs are responsible for involuntary movements
Smooth Muscles
What type of muscle concertrates on when the muscle lengths when resisting a load?
Eccentric Contraction
what is the sarcoplasmic reticulum?
The structure in the muscle cells is responsible for storing and releasing calcium, which is essential for muscle contraction.
what is the rough endoplasmic?
This organelle in muscle cells plays a role in the synthesis of proteins that are needed for muscle structure and function.
What are four characteristics associated with muscle tissues?
Excitability, contractility, extensibility, and elasticity
What cells specialize in muscle allow for synchronized contraction of the cell?
Intercalated Discs
What is the process that involves the fusion of muscle precursor cells to form mature muscle fibers?
Myogenesis
what is actin?
This protein ,found in the muscle cells, forms thin filaments and works with myosin to enable muscle contraction through the sliding filament theory.
What are T-tubules ?
These tiny structures inside the muscle cells are responsible for transmitting electrical signals from the surface of the cell to the deep interior, helping coordinate muscle contraction.