Exam 7: Muscle Physiology

Match the skeletal muscle proteins, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) -can bind with myosin during muscle contraction

What initiates contraction of smooth muscle

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

Which of these substances is required for contraction of smooth muscle fibres

Which of these muscle types is myogenic

The sarcoplasmic reticulum stores which substance when a muscle is relaxed, and releases it for binding to which substance during contraction

Which of the following would happen if ATP supplies became very low or were not available in a muscle cell

Which of these statements does NOT describe cross bridges

Which of these statements describes the sliding filament mechanism of muscle contraction

Muscle relaxation does not take place until all the ATP is used up.

____________________ refers to paralysis of the legs resulting from lower spinal cord injury.

Which of these statements applies to the functional syncytium of cardiac muscles cells

What causes muscular fatigue

What is the first source for supplying additional ATP when exercise begins

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) -has the largest diameter

Match the muscle type with the correct characteristics by using the answer codes ____ cardiac muscle ____ multiunit smooth muscle ____ single-unit smooth muscle ____ skeletal muscle

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.) -display(s) pacemaker potentials and slow-wave potentials

Which of these structures is the smallest unit of contraction within a skeletal muscle

The only energy source that can be used directly by the contractile machinery of a muscle fibre is ____________________.

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) -uses up considerable glycogen