Podcast
Questions and Answers
Which type of muscle is responsible for voluntary body movement?
Which type of muscle is responsible for voluntary body movement?
- Skeletal muscle (correct)
- Cardiac muscle
- Smooth muscle
- None of the above
Which type of muscle is responsible for involuntary body movement and is found in the heart?
Which type of muscle is responsible for involuntary body movement and is found in the heart?
- Skeletal muscle
- Cardiac muscle (correct)
- Smooth muscle
- None of the above
Which type of muscle is responsible for involuntary body movement and is not striated?
Which type of muscle is responsible for involuntary body movement and is not striated?
- Skeletal muscle
- Cardiac muscle
- Smooth muscle (correct)
- None of the above
Which type of muscle cells are elongated and also referred to as muscle fibers?
Which type of muscle cells are elongated and also referred to as muscle fibers?
Which prefix refers to 'muscle' in the terminology used for muscles?
Which prefix refers to 'muscle' in the terminology used for muscles?
What theory explains the contraction and shortening of muscles?
What theory explains the contraction and shortening of muscles?
Which theory explains the sliding filament theory mostly for skeletal muscle?
Which theory explains the sliding filament theory mostly for skeletal muscle?
Which type of muscle is also affected by the sliding filament theory?
Which type of muscle is also affected by the sliding filament theory?
Which type of muscle is attached by tendons to bones?
Which type of muscle is attached by tendons to bones?
Which type of muscle cells are multinucleate?
Which type of muscle cells are multinucleate?
Which type of muscle is striated and subject to conscious control?
Which type of muscle is striated and subject to conscious control?
Which type of muscle is responsible for voluntary body movement?
Which type of muscle is responsible for voluntary body movement?
Which type of muscle cells are multinucleate?
Which type of muscle cells are multinucleate?
Which type of muscle is striated and subject to conscious control?
Which type of muscle is striated and subject to conscious control?
Which connective tissue wraps around a fascicle (bundle) of muscle fibers?
Which connective tissue wraps around a fascicle (bundle) of muscle fibers?
Which connective tissue covers the entire skeletal muscle?
Which connective tissue covers the entire skeletal muscle?
Which connective tissue encloses a single muscle fiber? Cells are surrounded and bundled by connective tissue.
Which connective tissue encloses a single muscle fiber? Cells are surrounded and bundled by connective tissue.
Which connective tissue wraps around a fascicle (bundle) of muscle fibers? Cells are surrounded and bundled by connective tissue
Which connective tissue wraps around a fascicle (bundle) of muscle fibers? Cells are surrounded and bundled by connective tissue
Which connective tissue encloses a single muscle fiber?
Which connective tissue encloses a single muscle fiber?
Which connective tissue covers the entire skeletal muscle?
Which connective tissue covers the entire skeletal muscle?
Which connective tissue structure attaches muscles indirectly to bones, cartilages, or connective tissue coverings?
Which connective tissue structure attaches muscles indirectly to bones, cartilages, or connective tissue coverings?
Which connective tissue structure mostly consists of collagen fibers and often crosses a joint?
Which connective tissue structure mostly consists of collagen fibers and often crosses a joint?
What is the name of the connective tissue that blends into a connective tissue attachment and surrounds the entire skeletal muscle?
What is the name of the connective tissue that blends into a connective tissue attachment and surrounds the entire skeletal muscle?
Which type of fibers are mostly found in tendons?
Which type of fibers are mostly found in tendons?
Why do tendons often cross a joint?
Why do tendons often cross a joint?
What are tendons primarily made of?
What are tendons primarily made of?
Which type of muscle is responsible for conscious control?
Which type of muscle is responsible for conscious control?
Which type of muscle cells are spindle-shaped?
Which type of muscle cells are spindle-shaped?
Which type of muscle is found in the walls of hollow visceral organs?
Which type of muscle is found in the walls of hollow visceral organs?
Smooth muscle cells are characterized by
Smooth muscle cells are characterized by
Where are smooth muscles mainly found in the body?
Where are smooth muscles mainly found in the body?
Which type of control is associated with smooth muscles?
Which type of control is associated with smooth muscles?
Which type of muscle is characterized by branching cells and is found only in the walls of the heart?
Which type of muscle is characterized by branching cells and is found only in the walls of the heart?
Which characteristic is NOT associated with cardiac muscle?
Which characteristic is NOT associated with cardiac muscle?
What type of muscle is responsible for voluntary body movement and has striations?
What type of muscle is responsible for voluntary body movement and has striations?
Which type of muscle cells are found only in the walls of the heart?
Which type of muscle cells are found only in the walls of the heart?
Which characteristic is NOT associated with cardiac muscle?
Which characteristic is NOT associated with cardiac muscle?
Which type of muscle is involuntary?
Which type of muscle is involuntary?
Which type of muscle is responsible for generating heat in the body?
Which type of muscle is responsible for generating heat in the body?
What is one of the functions of skeletal muscle?
What is one of the functions of skeletal muscle?
Which type of muscle cells are elongated and also referred to as muscle fibers?
Which type of muscle cells are elongated and also referred to as muscle fibers?
Which organelles are found inside muscle cells?
Which organelles are found inside muscle cells?
What gives the muscle its striped appearance?
What gives the muscle its striped appearance?
What is the specialized plasma membrane of a muscle cell called?
What is the specialized plasma membrane of a muscle cell called?
Which band in the muscle contains only thin filaments?
Which band in the muscle contains only thin filaments?
Which band in the muscle contains the entire length of the thick filaments?
Which band in the muscle contains the entire length of the thick filaments?
Which area of the band contains the entire length of the thick filaments?
Which area of the band contains the entire length of the thick filaments?
Where is the M line located?
Where is the M line located?
Which area of the band is a lighter central area?
Which area of the band is a lighter central area?
Which type of muscle is characterized by branching cells and is found only in the walls of the heart?
Which type of muscle is characterized by branching cells and is found only in the walls of the heart?
Which connective tissue covers the entire skeletal muscle?
Which connective tissue covers the entire skeletal muscle?
Which organelle stores and releases calcium in muscle cells?
Which organelle stores and releases calcium in muscle cells?
What surrounds the myofibril in muscle cells?
What surrounds the myofibril in muscle cells?
Which myofilament is responsible for muscle contraction?
Which myofilament is responsible for muscle contraction?
What surrounds the myofibril in muscle cells?
What surrounds the myofibril in muscle cells?
Which characteristic of muscle cells allows them to be stretched?
Which characteristic of muscle cells allows them to be stretched?
Which characteristic of muscle cells allows them to recoil and resume resting length after stretching?
Which characteristic of muscle cells allows them to recoil and resume resting length after stretching?
Which characteristic of muscle cells refers to their ability to receive and respond to a stimulus?
Which characteristic of muscle cells refers to their ability to receive and respond to a stimulus?
Which type of muscle must be stimulated by a motor neuron to contract?
Which type of muscle must be stimulated by a motor neuron to contract?
What is a motor unit composed of?
What is a motor unit composed of?
What is the ability of a muscle to shorten when an adequate stimulus is received called?
What is the ability of a muscle to shorten when an adequate stimulus is received called?
Which chemical is released by the nerve upon arrival of a nerve impulse in the axon terminal?
Which chemical is released by the nerve upon arrival of a nerve impulse in the axon terminal?
What is the specialized enzyme that breaks down Acetylcholine (ACh) when the impulse is removed?
What is the specialized enzyme that breaks down Acetylcholine (ACh) when the impulse is removed?
Where does the neuromuscular junction occur?
Where does the neuromuscular junction occur?
Which of the following best describes the synaptic cleft?
Which of the following best describes the synaptic cleft?
What fills the synaptic cleft?
What fills the synaptic cleft?
Where is the synaptic cleft located?
Where is the synaptic cleft located?
Which ion enters the axon terminal of the motor neuron when a nerve impulse is received?
Which ion enters the axon terminal of the motor neuron when a nerve impulse is received?
What happens when calcium ions enter the axon terminal?
What happens when calcium ions enter the axon terminal?
Where does acetylcholine (ACh) attach when it diffuses across the synaptic cleft?
Where does acetylcholine (ACh) attach when it diffuses across the synaptic cleft?
Which ion enters the axon terminal when a nerve impulse reaches it?
Which ion enters the axon terminal when a nerve impulse reaches it?
What happens when enough acetylcholine (ACh) is released into the synaptic cleft?
What happens when enough acetylcholine (ACh) is released into the synaptic cleft?
What happens when sodium (Na+) rushes into the muscle cell?
What happens when sodium (Na+) rushes into the muscle cell?
What happens when depolarization occurs in the muscle cell?
What happens when depolarization occurs in the muscle cell?
Which enzyme breaks down acetylcholine into acetic acid and choline?
Which enzyme breaks down acetylcholine into acetic acid and choline?
What are the products of acetylcholine breakdown by Acetylcholinesterase (AChE)?
What are the products of acetylcholine breakdown by Acetylcholinesterase (AChE)?
Which of the following is responsible for returning a cell to its resting state?
Which of the following is responsible for returning a cell to its resting state?
Which ions diffuse out of the cell to return it to its resting state?
Which ions diffuse out of the cell to return it to its resting state?
Graded responses can be produced by changing
Graded responses can be produced by changing
Which type of muscle contraction is characterized by a single, brief contraction and is not a normal muscle function?
Which type of muscle contraction is characterized by a single, brief contraction and is not a normal muscle function?
What is the term for different combinations of muscle fiber contractions that may give differing responses within a skeletal muscle?
What is the term for different combinations of muscle fiber contractions that may give differing responses within a skeletal muscle?
What type of muscle response refers to different degrees of skeletal muscle shortening?
What type of muscle response refers to different degrees of skeletal muscle shortening?
True or false muscle fiber contraction is described as 'all or none'?
True or false muscle fiber contraction is described as 'all or none'?
Which type of graded response is a single, brief contraction that is not a normal muscle function?
Which type of graded response is a single, brief contraction that is not a normal muscle function?
Which type of tetanus occurs when one contraction is immediately followed by another, without the muscle completely returning to a resting state?
Which type of tetanus occurs when one contraction is immediately followed by another, without the muscle completely returning to a resting state?
Which type of tetanus occurs when there is no evidence of relaxation before the following contractions?
Which type of tetanus occurs when there is no evidence of relaxation before the following contractions?
What happens during summing of contractions?
What happens during summing of contractions?
What happens during unfused (incomplete) tetanus?
What happens during unfused (incomplete) tetanus?
Which type of tetanus occurs when one contraction is immediately followed by another, without the muscle completely returning to a resting state?
Which type of tetanus occurs when one contraction is immediately followed by another, without the muscle completely returning to a resting state?
What happens during summing of contractions?
What happens during summing of contractions?
Which type of tetanus occurs when the muscle contraction is smooth and sustained?
Which type of tetanus occurs when the muscle contraction is smooth and sustained?
What is the relationship between muscle force and the number of fibers stimulated?
What is the relationship between muscle force and the number of fibers stimulated?
What allows muscles to continue contracting unless they run out of energy?
What allows muscles to continue contracting unless they run out of energy?
Which molecule serves as the immediate source of energy for muscle contraction?
Which molecule serves as the immediate source of energy for muscle contraction?
What happens to the stored ATP in muscle fibers after the initial use?
What happens to the stored ATP in muscle fibers after the initial use?
Which of the following is NOT one of the ways to generate ATP?
Which of the following is NOT one of the ways to generate ATP?
Which process involves the formation of lactic acid?
Which process involves the formation of lactic acid?
Which process requires oxygen to generate ATP?
Which process requires oxygen to generate ATP?
Which molecule is responsible for direct phosphorylation of ADP to regenerate ATP in muscle cells?
Which molecule is responsible for direct phosphorylation of ADP to regenerate ATP in muscle cells?
How many ATP molecules are created per molecule of creatine phosphate (CP)? fastest way to get ATP
How many ATP molecules are created per molecule of creatine phosphate (CP)? fastest way to get ATP
Which type of respiration occurs in the mitochondria and releases energy from glucose?
Which type of respiration occurs in the mitochondria and releases energy from glucose?
What are the end products of aerobic respiration?
What are the end products of aerobic respiration?
Which molecule do muscle cells store as a high-energy molecule?
Which molecule do muscle cells store as a high-energy molecule?
What remains after ATP is depleted in muscle cells?
What remains after ATP is depleted in muscle cells?
What is the function of CP in muscle cells?
What is the function of CP in muscle cells?
Which factor can produce graded responses in skeletal muscle contractions?
Which factor can produce graded responses in skeletal muscle contractions?
What can influence the strength of skeletal muscle contractions?
What can influence the strength of skeletal muscle contractions?
How can graded responses be produced in skeletal muscle contractions?
How can graded responses be produced in skeletal muscle contractions?
