Structure of muscles

What are the characteristics of the cardiac muscle?

• Involunatary

• Found in the heart

• Striated Appearance

• Dense connective tissue packaging

Which of the following describes muscle bundles? 

• Long, multi-nucleated, thread-like cells
• Set of muscle fibers grouped together 
• Considered to the cell of the muscle 
• Organelles which are unique to muscle tissue

Skeletal muscles are attached to which of the following? 

• Bones and ligaments 
• Ligaments and tendons
• Tendons and bones
• Bones and fat 

Muscles are needed for what?

• movement

• decoration

• pump blood

• no one knows

Smooth muscle is located where?

• heart

• bones

• toes

• internal organs

What are the two classifications of muscles in your body?

• Voluntary and Controllable
• Flabby and Strong
• Involuntary and Voluntary
• Hard and soft

Which 2 systems work together to help a person stand erect?

• skeletal / muscular
• skeletal / digetive
• skeletal / respiratory
• skeletal / cardiovascular

What type of muscle tissue has numerous nuclei within each cell?

• Visceral smooth muscle

• Cardiac Muscle

• Skeletal muscle

• Multiunit smooth muscle

The thick myofibril filament of a sarcomere is
composed of a protein:

• actin.
• myosin.
• sarcolemma.
• titin.

The unit within muscle fiber is the:

• actin.
• nucleus.
• mitochondrion.
• sarcomere.