exam 7 Flashcards
A contraction in which the tension within the muscle remains the same but the length changes is called a(n) _____ contraction.
isotonic
A decrease in muscle size is termed:
atrophy
A sarcomere is a segment of myofibril between two successive:
z-lines
After it is released from the sarcoplasmic reticulum, the calcium combines with which protein?
troponin
From smallest to largest, which of the following is the correct order of arrangement?
Myofilament, myofibril, fiber
Glucose can be stored in the muscle as:
glycogen
The characteristic of the muscle cell that directly causes movement is:
contractility
The lactate produced by anaerobic respiration is converted back to glucose in the:
liver
Thick myofilaments extend the length of the:
a band
Treppe is also called:
staircase phenomenon
Which of the following is not a factor in why a warm muscle contracts more forcefully than a cool muscle?
ATP releases energy faster
Which of the following is not associated with the thin myofilament?
myosin
Which of the following proteins found in myofilaments contains the cross-bridges?
myosin
Which of the following statements about cardiac muscle is incorrect?
require nervous stimulation
Which of the following statements about cardiac muscle is incorrect?
much of calcium is necessary
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 that muscle can be.
Which of the following statements is incorrect regarding muscle tone?
referred to as spastic
Which structure functions to temporarily store calcium ions?
sarcoplasmic reticulum
White fibers are also called _____ fibers.
fast
_____ muscle is also known as striated muscle.
skeletal
