Interactions between actin and myosin filaments of the sarcomere are responsible for
The conduction of neural stimulation to the muscle fiber
The striped appearance of skeletal muscle
Muscle contraction
Muscle relaxation
Muscle fatigue
Muscle contraction
The area in the center of the A band that contains no thin filaments is the
I band
M line
Zone of overlap
Z line
H band
Which of the following is a recognized function of skeletal muscle?
Guard body entrances and exits
Produce movement
Maintain posture
Maintain body temperature
All of the choices are correct
All of the choices are correct
A single motor neuron together with all the muscle fibers it innervates is called
An end foot
A dermatome
A motor unit
An end plate
A myotome
A motor unit
The thin filaments of striated muscle are made of which protein(s)?
Troponin
Nebulin
Actin
Actin
Which of the following is not a characteristic of smooth muscle?
Smooth muscles do not contain sarcomeres
Neurons that innervate smooth muscles are under involuntary control
Smooth muscles are uninucleate
The thin filaments of smooth muscle fibers are attached to dense bodies
Smooth muscle connective tissue forms tendons and aponeuroses
Smooth muscle connective tissue forms tendons and aponeuroses
At each end of the muscle, collagen fibers of the epimysium, and each perimysium and endomysium, come together to form a
Tendon
Tenosynovium
Sheath
Satellite cell
Ligament
Tendon
The plasma membrane of skeletal is called the
Sarcoplasmic reticulum
Sarcoplasm
Sarcomere
Sarcolemma
Sarcosome
Sarcolemma
Muscle tissue, one of the four basic tissue groups, consists chiefly of cells that are highly specialized for
Contraction
Peristalsis
Cushioning
All of the above
Contraction
The region of the sarcomere containing the thick filaments is the
A band
M line
Z line
I band
H band
A band
Each skeletal muscle fiber is controlled by a motor neuron at a single
Synaptic cleft
Neuromuscular junction
Synaptic knob
Sarcomere
Transverse tubule
Neuromuscular junction
The dense layer of connective tissue that surrounds an entire skeletal muscle is the
Endomysium
Fascicle
Perimysium
Epimysium
Tendon
Epimysium
The types of muscle tissue include all of the following, except
Skeletal muscle
Striated muscle
Cardiac muscle
Smooth muscle
Noone of the above
Striated muscle
Which of the following best describes the term Z line?
Protein that accounts for elasticity of resting muscle
Largely made of myosin molecules
Storage site for calcium ions
Thin filaments are anchored here
Thin filaments are anchored here
The skeletal muscle complex known as the triad consists of
actin, myosin, and filaments
filaments, myofibrils, and sarcomeres
actin, myosin, and sarcomeres
a transverse tubule and two terminal cisternae
A bands, H bands, and I bands
A transverse tubule and two terminal cisternae