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|How many different types of muscle tissue are there?
|Major function of muscle tissue?
|Stopping the movement of joints Moving blood throughout the body Generating heat through contractions
|This is a band of connective tissue that surrounds an entire muscle.
|The cylindrical structures that extend along the entire length of a muscle fiber are:
|The thick filaments of a sarcomere consist of:
|What slides past what during muscle contraction?
|Thin filaments slide past thick filaments
|This consists of a somatic motor neuron plus all the skeletal muscle fibers it stimulates.
|The neurotransmitter released from synaptic end bulbs after arrival of a nerve impulse is:
|What ingredients are needed for muscle contraction?
|ATP and Ca2+
|The sequence that muscle action potentials must go through to excite a muscle cell are:
|Axon of neuron, sarcolemma, T tubules, sarcoplasmic reticulum
|Where is ATP split to energize contraction of a sarcomere?
|At the myosin heads
|Creatine phosphate and ATP together create enough energy for a muscle to contract for
|Aerobic respiration requires?
|It requires oxygen and mitochondria
|The brief delay between application of a stimulus and the beginning of contraction is called the:
|Increasing the number of active motor units is called:
|Motor unit recruitment
|In an isometric contraction, the muscle develops tension but does not:
|An increase in the size of muscle fibers
|Which of the following exhibits autorhythmicity?
|Cardiac muscle fibers
|Smooth muscle tone is due to the prolonged presence of what in the cytosol?
|Between the ages of 30-50,about ______of muscle mass has been lost
|How much of the total body weight of the average adult is muscle tissue?
|Which type of muscle tissue is nonstriated and involuntary?
|This is the property of muscle that gives it the ability to stretch without damage.
|This is a band of connective tissue that surrounds fascicles of muscle fibers within a muscle.
|For every nerve that penetrates a skeletal muscle there are general how many arteries and veins?
|One artery and one or two veins
|The basic functional units of striated muscle fibers are:
|What regulatory proteins can be found on an actin molecule?
|Tropomyosin and Troponin
|In the sliding filament mechanism, the thin filament is being pulled towards the
|Center of the sarcomere
|Axon terminal clusters at the ends of neuromuscular junctions are referred to as:
|Synaptic end bulbs
|The signal to excite a muscle cell must cross the neuromuscular junction by the diffusion of acetylcholine across the:
|This part of the skeletal muscle cell releases calcium when stimulated by the T tubules.
|Terminal cisterns of sarcoplasmic reticulum
|The sarcoplasmic reticulum is used for storing:
|What energizes the myosin head?
|ATP hydrolysis reaction
|True or False. Transfer of energy from creatine phosphate to ADP, anaerobic cellular respiration, and aerobic cellular respiration are all processes by which muscles produce ATP.
|Lactic acid is created during:
|This is a brief contraction of all muscle fibers in a motor unit in response to a single action potential.
|A sustained contraction that is stimulated at a rate higher than 80 to 100 times per second, is called:
|Example of white fibers?
|Fast glycolytic fibers
|Involuntary and often painful contractions of muscles are called:
|Muscle spindles are supplied by:
|Gamma motor neurons
|Which muscle fibers are joined by intercalated discs?
|Cardiac muscle fibers
|The muscle tissue found in many internal organs and blood vessels is:
|When connective tissue extends as a broad flat layer, the tendon is referred to as
|Which of the following are the proprioceptors that monitor the changes in the length of skeletal muscles?
|The characteristic of muscular tissue that allows it to return to its original shape after contraction
|Wraps an entire muscle
|Lies immediately under the skin
|Seperates muscle organs into functional groups
|Surrounds each individual muscle fiber
|Divides Muscle fibers into fascicles
|Network of tubules that stores calcium
|Pigment that stores oxygen
|Composed of myosin
|Composed of actin, tropomyosin, and troponin
|Tunnel-like extensions of sarcolemma
|The sarcolemma is the equivalent of the
|During weight lifting training your skeletal muscles will obtain energy (ATP) primarily through
|Anaerobic cellular respiration
|When ATP in the sacroplam is exhausted, the muscle must rely on ____________to quickly produce more ATP from ADP for contraction.
|A motor unit consists of
|A motor neuron, and all the muscle fibers it stimulates.
|Thick filaments have
|myosin heads (cross-bridges) used for the power stroke.
|The substance that prevents the continuous stimulation of a muscle fiber is
|The order of skeletal muscle contraction
|Acetylcholine released from axon terminal, action potential travels into transverse tubules, sacroplasmic reticulum releases Ca2+, Ca2+ combines with troponin, energized myosin heads attach to actin,thin filaments slide toward center of sacromere.
|Extend from thick filments
|Contain myosin-binding site
|Dense area that separates sacromeres
|Striated zone of the sarcomere composed of thick and thin filaments
|Space between axon terminal and the sarcolemma
|Striated zone of the sarcomere composed of thin filaments only
|Region of sarcolemma near the adjoining axon terminal
|Motor end plate