Muscular System

What are the 3 types of muscles?

• Cardiac, smooth and skeletal
• Cardiac, skeletal, prime
• Flexion, extension, smooth
• Skeletal, smooth, stringy

What is smooth muscle responsible for?

• Responsible for voluntary body movements.
• Carries out mostly involuntary processes like digestion and pumping blood through arteries.
• Prevents the actin from rubbing with the myosin.
• Rigor mortis

What is skeletal muscle responsible for?

• Responsible for voluntary body movements.
• Carries out mostly involuntary processes like digestion and pumping blood through arteries.
• Prevents the actin from rubbing with the myosin.
• Rigor mortis

Tendons connect __________ to bone.

• Cartilage
• Bone
• Muscle
• Ligaments

Myofibrils are divided into lengthwise fragments called __________.

• Sarcomeres
• Epimysium
• Endomysium
• Perimysium

What are the skinny strands that attach to either ends of the sarcomere called?

• Myosin
• Fibers
• Actin
• Myofibrils

What is the thicker layer of proteins in the middle of the sarcomere called?

• Myosin
• Fibers
• Actin
• Myofibrils

What do troponin and tropomyosin do?

• Lengthening and shortening.
• Responsible for voluntary body movements.
• Carries out mostly involuntary processes like digestion and pumping blood through arteries.
• Prevents the actin from rubbing with the myosin.

How many kinds of muscles are there in the body?

• 5
• 3
• 6
• 2

Where is the cardiac muscle found?

• skin
• bones
• lungs
• heart