NEW
Font size
WorksheetsMuscular System
Total questions: 23
Worksheet time: 12mins
Which of the following is NOT a function of the muscular system?
Generate heat
Produce movement
Maintain posture
Ossification
What cordlike structure can the epimysium blend into?
ligaments
fascia
tendons
aponeuroses
What is a sarcomere?
A compartment in a myofilament
The area between two intercalated discs
The wavy lines on a the cell, as seen in a microscope
The contractile unit between two Z discs
Which type of muscle tissue contracts most quickly upon stimulation?
Visceral
Smooth
Skeletal
Cardiac
Which of the following can actually shorten during a muscle contraction?
Sarcomere
Myosin filament
Actin filament
Myofilament
What does anaerobic glycolysis not require to occur?
Oxygen
Carbon dioxide
Glucose
ATP
Which type of contraction produce movements by muscles shortening?
Isotonic contractions
Isometric contractions
Twitches
Resistance exercises
Which of the following is the opposite movement to extension?
Flexion
Rotation
Circumduction
Adduction
What is a motor unit?
A motor neuron and all of the skeletal muscle fibers it stimulates
A contractile unit of a muscle fiber
The tissue that surrounds the muscle fiber
The junction between the muscle cell and neuron
How is muscle fatigue best described?
The inability to generate sufficient quantities of ATP due to feedback regulation of synthesis
A total lack of ATP
Insufficient intracellular quantities of ATP due to excessive consumption
Inadequate numbers of mitochondria
What does acetylcholine need to do to excite muscle cells?
It must bind to receptors in the sarcolemma of the muscle cell
It must enter the muscle cell by endocytosis
It must enter the muscle cell through protein channels
It must travel into the axon terminal of the nerve cell by endocytosis
Which of the following is NOT a criterion used in naming muscles?
Location of muscle’s origin and insertion
The shape of the muscle
The location of the muscle
The method of attachment
What does the term irritability mean?
The ability to shorten when an adequate stimulus is received
The ability to receive and respond to a stimulus
The ability to recoil and resume resting length after strectching
The ability of muscle cells to be stretched
Which statement best describes the Sliding Filament Theory?
Muscle fiber contraction is “all or none” the whole muscle fiber must contract once stimulated
Muscle fiber contraction is generated by thin filaments sliding past thick filaments
Muscle fibers contract as brief, single contractions
Muscle fibers fatigue as a result of prolonged strenuous muscle activity
Which of the following stabilizes the origin of a prime mover?
Synergisty
Antagonist
Fixator
Prime mover
What is the main function of the hamstring group of muscles?
Flex the knee
Extend the hip
Extend the knee
Flex the knee and extend the hip
What function does creatine phosphate serve in the muscle cells?
CP breaks down glucose into carbon dioxide and water to release energy
CP breaks down glucose without oxygen
CP transfers a phosphate group to ADP to resynthesize ATP
CP blocks oxygen to create oxygen deficit
Which type of muscle contraction occurs without a change in length?
Isotonic contractions
Tetanus contractions
Isometric contractions
Twitches
What movements are shown in the picture?
Flexion & Extension
Supination & Pronation
Adduction & Abduction
Dorsiflexion & Plantar flexion
Which movements are shown in the picture?
Dorsiflexion & Plantar flexion
Supination & Pronation
Inversion & Eversion
Abduction & Adduction
Which movements are shown in the picture?
Dorsiflexion & Plantar flexion
Eversion & Inversion
Abduction & Adduction
Flexion & Extension
Which movements are shown in the picture?
Abduction & Adduction
Dorsiflexion & Plantar flexion
Eversion & Inversion
Flexion & Extension
Which movements are shown in the picture?
Abduction & Adduction
Eversion & Inversion
Flexion & Extension
Dorsiflexion & Plantar flexion
