Exam 7: Muscle Physiology

Match the types of muscles, labelled a. through g., with the properties in question. (Options may be used more than once or not at all.) -contain(s) actin, myosin, troponin, and tropomyosin

What happens during coactivation

Match the types of muscles, labelled a. and b., with the characteristics. -tension remains constant

What is the first means by which ATP is produced at the onset of contractile activity

All skeletal muscles are attached to the skeleton.

What can activate the stretch receptors in the central portion of the muscle spindle

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) -requires a constant supply of oxygen

Match the types of muscles, labelled a. through g., with the properties in question. (Options may be used more than once or not at all.) -has/have a clear-cut, length-tension relationship

What is the cause of enlargement of muscle due to weight lifting

Match the types of muscles, labelled a. through g., with the properties in question. (Options may be used more than once or not at all.) -maintain(s) a constant resting membrane potential unless stimulated

How does contraction of smooth muscle differ from that of skeletal muscle

The lever system at the elbow joint provides a mechanical advantage so that, when the biceps muscle contracts to flex the elbow joint and lift an object in the hand, the force developed in the biceps can be considerably less than the actual load that is moved.

Match the bands, labelled a. through c., with the descriptions. (Options may be used more than once or not at all.) -composed of thick and thin filaments

The source of calcium in smooth muscle is the ____________________.

Which of these events results from disruption of a motor system that supplies inhibitory presynaptic inputs to motor neurons

Which of these statements describes muscle tension

A(n) ____________________ is a motor neuron and all the muscle fibres it recruits.

ATP expenditure is required for both contraction and relaxation of a muscle fibre.

Match the skeletal muscle proteins, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) -found in thick filament

Which of the following provides the energy for cross-bridge cycling during muscle contraction