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.) -innervated by the autonomic nervous system

Thin and thick filaments overlap in the A band.

Which of the following describes how sarcomeres are arranged end to end

Which of the following properties characterizes fast oxidative (type IIa) muscle fibres

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

The ____________________ is a modified endoplasmic reticulum within muscle.

Which one of the following is the function of tropomyosin

What happens when a muscle atrophies

Single-unit smooth muscle has no innervation.

Match the skeletal muscle proteins, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) -shape consists of two globular heads attached to a tail

Match the sarcomere components, labelled a. through d., with the characteristics. (Options may be used more than once or not at all.) -light band

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.) -self-excitable

Which of these statements does NOT describe smooth muscle

All smooth muscle is myogenic.

Which of the following are in the I band of the sarcomere

Match the muscle term with the correct characteristic by using the answer codes ____ myoglobin ____ glycogen ____ lactic acid ____ glucose

The work performed by a muscle is the force it develops divided by distance.

More tension is developed during twitch summation than during a single twitch because the duration of elevated cytosolic Ca²⁺ concentration increases during summation, thus increasing the availability of cross-bridge binding sites.

The striated appearance of skeletal muscle is due to regular orderly arrangement of which of the following

Which of these statements applies to smooth muscle