Podcast
Questions and Answers
What is a sarcomere?
What is a sarcomere?
- The basic contracting unit of skeletal muscle (correct)
- A type of protein filament
- The entire skeletal muscle
- A type of myofibril
What is a myofibril composed of?
What is a myofibril composed of?
- Skeletal muscles
- Contractile units
- Series of protein filaments (correct)
- Z discs
What is the function of a sarcomere?
What is the function of a sarcomere?
- To generate force (correct)
- To store energy
- To transmit nerve impulses
- To regulate muscle length
What is shared between adjacent sarcomeres?
What is shared between adjacent sarcomeres?
What is the arrangement of sarcomeres in a myofibril?
What is the arrangement of sarcomeres in a myofibril?
What is the main function of actin filaments in a sarcomere?
What is the main function of actin filaments in a sarcomere?
What type of filaments appear to float in the middle of a sarcomere?
What type of filaments appear to float in the middle of a sarcomere?
What is the name of the disc shared by adjacent sarcomeres?
What is the name of the disc shared by adjacent sarcomeres?
How are myosin filaments arranged in a sarcomere?
How are myosin filaments arranged in a sarcomere?
What is the repeating unit of a myofibril?
What is the repeating unit of a myofibril?
What is the name of the protein filament that can attach to Z lines in a sarcomere?
What is the name of the protein filament that can attach to Z lines in a sarcomere?
Where do myosin filaments primarily appear in a sarcomere?
Where do myosin filaments primarily appear in a sarcomere?
What is the function of myosin cross bridges in a sarcomere?
What is the function of myosin cross bridges in a sarcomere?
What is the name of the disc that adjacent sarcomeres share?
What is the name of the disc that adjacent sarcomeres share?
What is the sliding filament theory used to explain in muscle contraction?
What is the sliding filament theory used to explain in muscle contraction?
What is the mechanism by which muscle fibres contract?
What is the mechanism by which muscle fibres contract?
What is the role of little heads on myosin filaments?
What is the role of little heads on myosin filaments?
What is the analogy used to explain muscle contraction?
What is the analogy used to explain muscle contraction?
What is the result of the interaction between myosin and actin filaments?
What is the result of the interaction between myosin and actin filaments?
What is the term used to describe the sliding of filaments past each other?
What is the term used to describe the sliding of filaments past each other?
What happens when the little heads on myosin filaments bind to the adjacent filament?
What happens when the little heads on myosin filaments bind to the adjacent filament?
What is the purpose of the sliding filament theory?
What is the purpose of the sliding filament theory?
What is the analogy used to explain the sliding filament theory?
What is the analogy used to explain the sliding filament theory?
What is the net result of the interaction between myosin and actin filaments?
What is the net result of the interaction between myosin and actin filaments?
What is the role of myosin filaments in the sliding filament theory?
What is the role of myosin filaments in the sliding filament theory?
What are the four main tissue types found in many different organ systems and structures?
What are the four main tissue types found in many different organ systems and structures?
What type of tissue is muscle tissue classified as?
What type of tissue is muscle tissue classified as?
How many main tissue types are found in many different organ systems and structures?
How many main tissue types are found in many different organ systems and structures?
What is NOT one of the four main tissue types?
What is NOT one of the four main tissue types?
What do the four main tissue types include?
What do the four main tissue types include?
What surrounds muscle fibers themselves?
What surrounds muscle fibers themselves?
What is the outer covering of the entire muscle?
What is the outer covering of the entire muscle?
What type of tissue surrounds muscle tissue?
What type of tissue surrounds muscle tissue?
What is the term for the bundles of muscle fibers?
What is the term for the bundles of muscle fibers?
What connects muscle to bone or other muscles?
What connects muscle to bone or other muscles?
What is the outermost layer that covers the entire muscle?
What is the outermost layer that covers the entire muscle?
Which layer of connective tissue surrounds the bundles of muscle fibers called fascicles?
Which layer of connective tissue surrounds the bundles of muscle fibers called fascicles?
What type of tissue is continuous with the tendons or aponeuroses that connect muscle to bone or other muscles?
What type of tissue is continuous with the tendons or aponeuroses that connect muscle to bone or other muscles?
What is the middle layer of connective tissue that starts around muscle fibers themselves?
What is the middle layer of connective tissue that starts around muscle fibers themselves?
Which connective tissue layer surrounds muscle fibers directly?
Which connective tissue layer surrounds muscle fibers directly?
What is the primary function of connective tissue in skeletal muscle?
What is the primary function of connective tissue in skeletal muscle?
What can be found in the connective tissue layers surrounding skeletal muscle fibers?
What can be found in the connective tissue layers surrounding skeletal muscle fibers?
What is the purpose of connective tissue in reducing friction in skeletal muscle?
What is the purpose of connective tissue in reducing friction in skeletal muscle?
What is the role of adipose tissue in skeletal muscle connective tissue layers?
What is the role of adipose tissue in skeletal muscle connective tissue layers?
What do the connective tissue layers help skeletal muscle fibers do?
What do the connective tissue layers help skeletal muscle fibers do?
Connective tissue in skeletal muscle fibers primarily serves to hold the components of the muscle together.
Connective tissue in skeletal muscle fibers primarily serves to hold the components of the muscle together.
Adipose tissue is not present at all in the connective tissue layers surrounding skeletal muscles.
Adipose tissue is not present at all in the connective tissue layers surrounding skeletal muscles.
The connective tissue layers around skeletal muscle fibers do not contain blood vessels or nerve fibers.
The connective tissue layers around skeletal muscle fibers do not contain blood vessels or nerve fibers.
Skeletal muscle fibers cannot exert a large force when they contract without being firmly fixed together.
Skeletal muscle fibers cannot exert a large force when they contract without being firmly fixed together.
The main function of connective tissue in skeletal muscles is to create friction between muscular forces.
The main function of connective tissue in skeletal muscles is to create friction between muscular forces.
