Podcast
Questions and Answers
There are only two types of muscle tissue in the human body.
There are only two types of muscle tissue in the human body.
False (B)
Skeletal muscles are responsible for circulating blood through the vessels.
Skeletal muscles are responsible for circulating blood through the vessels.
False (B)
Without muscle tissues, the body would be unable to move or perform any functions.
Without muscle tissues, the body would be unable to move or perform any functions.
True (A)
Skeletal muscle tissue consists of short, rounded muscle cells.
Skeletal muscle tissue consists of short, rounded muscle cells.
Skeletal muscles are made up only of skeletal muscle tissue.
Skeletal muscles are made up only of skeletal muscle tissue.
Smooth muscle is directly attached to the bones of the skeleton.
Smooth muscle is directly attached to the bones of the skeleton.
Anaerobic metabolism provides energy in the presence of oxygen.
Anaerobic metabolism provides energy in the presence of oxygen.
There are approximately 600 skeletal muscles in the human body.
There are approximately 600 skeletal muscles in the human body.
Fast-twitch fibers are specialized for prolonged contraction without fatigue.
Fast-twitch fibers are specialized for prolonged contraction without fatigue.
Glycolysis is a metabolic pathway that requires oxygen.
Glycolysis is a metabolic pathway that requires oxygen.
Skeletal muscles are responsible for maintaining body temperature.
Skeletal muscles are responsible for maintaining body temperature.
Slow-twitch fibers have a larger diameter than fast-twitch fibers.
Slow-twitch fibers have a larger diameter than fast-twitch fibers.
Epimysium is a type of connective tissue that surrounds individual muscle fibers.
Epimysium is a type of connective tissue that surrounds individual muscle fibers.
Skeletal muscles support soft tissues, such as visceral organs.
Skeletal muscles support soft tissues, such as visceral organs.
Exercise can induce changes in muscle fibers, such as hypertrophy.
Exercise can induce changes in muscle fibers, such as hypertrophy.
Oxidative phosphorylation is a metabolic pathway that occurs in the absence of oxygen.
Oxidative phosphorylation is a metabolic pathway that occurs in the absence of oxygen.
Perimysium is a type of connective tissue that surrounds the entire muscle.
Perimysium is a type of connective tissue that surrounds the entire muscle.
Skeletal muscles are responsible for controlling involuntary actions, such as swallowing and defecation.
Skeletal muscles are responsible for controlling involuntary actions, such as swallowing and defecation.
The power stroke results in the lengthening of the sarcomere and muscle relaxation.
The power stroke results in the lengthening of the sarcomere and muscle relaxation.
During the cross-bridge detachment, ATP is released from myosin.
During the cross-bridge detachment, ATP is released from myosin.
The myosin head returns to its original conformation after ATP is hydrolyzed to ADP and Pi.
The myosin head returns to its original conformation after ATP is hydrolyzed to ADP and Pi.
Muscle relaxation occurs when the cytoplasmic calcium concentration increases.
Muscle relaxation occurs when the cytoplasmic calcium concentration increases.
Muscle metabolism involves the breakdown of carbohydrates, fats, and proteins to generate ATP.
Muscle metabolism involves the breakdown of carbohydrates, fats, and proteins to generate ATP.
During relaxation, the muscle fiber returns to its original length due to the active transport of calcium ions into the sarcoplasmic reticulum.
During relaxation, the muscle fiber returns to its original length due to the active transport of calcium ions into the sarcoplasmic reticulum.
Pennate muscles are characterized by circular fascicles.
Pennate muscles are characterized by circular fascicles.
Bipennate muscles have two rows of fibers inserting on a tendon.
Bipennate muscles have two rows of fibers inserting on a tendon.
Circular muscles are also known as sphincters.
Circular muscles are also known as sphincters.
Sarcomeres are the structural units of skeletal muscle responsible for muscle relaxation.
Sarcomeres are the structural units of skeletal muscle responsible for muscle relaxation.
The A-band is a light region with non-overlapping thick and thin filaments.
The A-band is a light region with non-overlapping thick and thin filaments.
The Z-line defines the boundary between two adjacent sarcomeres.
The Z-line defines the boundary between two adjacent sarcomeres.
