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Functions of muscles are for
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The outermost layer of connective tissue surrounding a skeletal muscle is the
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muscles

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Functions of muscles are for A.the heartbeat.B.muscle tone.C.distribution of heat.D.moving bones.
The outermost layer of connective tissue surrounding a skeletal muscle is the Epimysium.
Myofibrils are composed primarily of actin and myosin.
The striated appearance of skeletal muscle results from the sarcomere organization.
Transverse tubules transmit muscle impulses into the cell interior.
The discoloration and swelling of a muscle strain is due to ruptured blood vessels.
A tendon is ______, whereas an aponeurosis is ______. cordlike and connects muscles to bones; a broad, fibrous sheet of connective tissue that connects muscles to muscles
Muscle fibers are basically a collection of sarcomeres
Transverse tubules and sarcoplasmic reticulum are well developed in fibers skeletal muscle fibers
The functional unit of muscle contraction is the sacomere
Neurotransmitters are stored in vesicles in motor neuron endings
The enzyme acetylecholinesterase causes acetylcholine to decompose
creatine phosphate supplies energy for the synthesis of ATP.
The amount of oxygen liver cells require to react lactic acid to produce glucose or the glycogen glycogen is the oxygen dept
Tawanda finishes a sprint and suffers great pain in her calf muscles. Her muscle cramps are most likely dueto a temporary deficit of ATP
Athletes usually experience muscle fatigue less quickly than nonathletes because they .produce less lactic acid.
At a neuromuscular junction the muscle fiber membrane folds forming a motor end plate
The toxin that causes botulism prevents release of acetylcholine.
Rigor mortis affects skeletal muscles a few hours after death due to decreased ATP and increased permeability to calcium.
At a neuromuscular junction .neurotransmitters are released.
The first event in muscle fiber contraction is that. acetylcholine is released from the end of the motor neuron.
Which of the following statements is correct? Actin filaments slide along myosin filaments.
The functional connection between a neuron and a skeletal muscle fiber is synapse
__________ degrades acetylcholine keeping it from accumulating in the synapse. Acetylcholinesterase
A shift in metabolism that breaks down pyruvic acid to lactic acid is called anaerobic threshold.
Oxygen debt in muscles may develop because of the inability of respiratory and circulatory systems to supply enough oxygen to skeletal muscles when used strenuously for a minute or two.
The relationship between ATP and creatine phosphate is that creatine phosphate supplies energy to regenerate ATP from ADP and phosphate.
A motor unit is a motor neuron and the muscle fibers connected to it.
during muscle contraction ATP supplies energy for myofilament movement.
Skeletal muscles help maintain body temperature in that .the more active they are the more heat is released.
Threshold stimulus is the minimal amount of energy required to contract a muscle fiber
A myogram is a recording of the events of a twitch.
An example of a partial but sustained contraction is muscle tone
Which of the following is not true Red fibers have fewer mitochondria than white.
in a recording of a muscle twitch the delay between the time a stimulus is applied and the time the muscleresponds is called the latent period
The very brief moment following stimulation when a muscle remains unresponsive to additional stimulationis called the refractory period
Smooth muscle lacks transverse tubules and striations.
Smooth muscle has ___________ and not troponin. calmodulin
Compared to skeletal muscle smooth muscle contracts more slowly and relaxes more slowly.
The type of muscle cell that lacks transverse tubules has a single nucleus and is under involuntary control is smooth muscle
Short muscle cells with centrally located nuclei are smooth muscle fibers
Both acetylcholine and norepinephrine can affect smooth muscle contraction
The structures that connect cardiac muscle cells are. intercalated disc
Cardiac muscle A.contracts as a syncytium.B.excites itself. C.responds in an all-or-none manner D.is only in the heart.
Bones and muscles function as mechanical devices called levers
The movable end of a muscle is its insertion
The muscle primarily responsible for an action is the prime mover
A muscle that assists a prime mover is a(n) synergist
The buccinator muscle is in the cheek
The muscle that adducts and flexes the arm is the coracobrachialis.
The linea alba is a band of tough connective tissue to which abdominal wall muscles attach.
The soleus is a muscle that forms part of the calf
Which of the following is not a muscle of mastication? mandibular
Which of the following is unique in that its insertion is to fascia and not bone? palmaris longus.
The triangle of auscultation commonly used to hear sounds of respiratory organs is located near the border of the trapezius and latissimus dorsi.
A gluteal gait in which a person walks with a waddling limp is usually caused by a disorder of the gluteus medius and gluteus minimus.
A sign of aging of the muscular system is decreased supplies of myoglobin to muscles.
Muscle atrophy that progresses with aging is caused by reduction in A.ATP.B.myoglobin.C.the sizes of muscle fibers.D.creatine phosphate.
People with myasthenia gravis lack about two-thirds of the normal number of acetylcholine receptors
Myasthenia gravis is an autoimmune disorder
Weightlifting in which a muscle exerts more than 75% of its maximum tension stimulates muscle fibers developing new filaments of actin and myosin
Fibers of muscles whose motor neurons are severed. may be replaced by fat or fibrous connective tissue.
Temporomandibular joint (TMJ) syndrome cause A.insomnia.B.ringing in the ears.C. backache.D.clicking sound from the jaw.
Binding sites on the surface of actin allow the formation of cross-bridges with molecules of myosin
the characteristic reddish brown color of skeletal muscle comes from this substance myoglobin
Activities such as distance swimming and distance running are most likely to stimulate development of slow, fatigued, resistant muscle fibers
the increase in the number of motor units activated are a result of more intense stimulation recruitment
Created by: lula78
 

 



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