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Physio 221

Chapter 6

QuestionAnswer
Which joint allows for the most movement ball and socket
The protein molecule that has heads jutting out for cross bridging is myosin
The rotator cuff muscles and tendons form a cufflike arrangement around the __ joint shoulder
The knee joint is an example of a __ joint hinge
Rotator cuff surgery is performed quite commonly on professional baseball players, especially pitchers. Evidently, the throwing motion places enormous stress on the shoulder
Painful muscle contractions or involuntary twitches are called cramps
The largest and most frequently injured joint is the knee
Most body movements are __ contractions isotonic
The ability of muscle cells to respond to nerve stimuli is called irritability
During which phase of the twitch contraction is there a triggering of the release of calcium ions into the sarcoplasm latent period
Stretching the foot down and back and pointing the toe is called plantar flexion
Which of the following is not an end product of the breakdown of ATP All of the above are end products of the breakdown of ATP
Thich myofilaments extend the length of the A band
In the structure called a triad, the T tubule is sandwiched between sacs of sarcoplasmic reticulum
The chief function of the T tubule is to allow for electrical signals to move deeper into the cell
Which joint allows for the widest rane of movement ball and socket
A contration in which the tension within the muscle remains the same but the length changes is called an __ contraction isotonic
Which type of muscle is responsible for peristalsis single unit smooth
Which of the following statements is incorrect about motor units The more muscle fibers stimulated by a motor neuron, the more precise the movements of the muscle can be
A gliding joint is an example of an ___ joint multiaxial
Which of the following is not a part of the neuromuscular junction T tubules
Physiolocial muscle fatigue may be caused by All of the above
Kicking a football is accomplished by knee extension
Endurance training is also known as aerobic training
All of the following are true characteristics of an isometric contraction except movement is produced
Attempting to pick up an object too heavy to lift would result in which type of muscle contraction isometric
The type of movement possible at a synovial joint depends on the shape of the articulating surfaces of the bones
Aerobic respiration produces the maximum amount of energy available from each glucose molecule
The substance that attracts oxygen in the myoglobin molecule is iron
Which of the following is an incorrect statement regarding heat production All of the above are correct
The purpse of creatine phosphate in muscle contraction is to replenish energy supply
Skeletal muscles are innervated by somatic motor neurons
Tilting the foot upward, decreasing the angle between the top of the foot and the front of the leg is called dorsiflexion
Which type of muscle does not have T tubules smooth
The opposite of dorsiglexion is plantar flexion
The type of movement that occurs when the head is dropped to the shoulder, then to the chest, to the other shoulder and toward s the back is circumduction
The iron necessary from cross bridging is calcium
The opposite of eversion is none of the above
After it is released from the sacrcoplasmic reticulum, the calcium combines with which protein troponin
Glucose can be stored in the muscle as glycogen
The strength of a muscle contraction is influced by the All of the above are correct
An example of a hinge joint are the interphalangeal joints
White fibers are also called ___ fibers fast
The lactate produced by anaerobic respiration is converted back to glucose in the liver
All of the following are noninflammatory joint disorders except juvenile rheumatoid arthritis
Created by: ktorres0506
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