Exam 7: Muscle Physiology

Which of these statements describes pacemaker activity

Which of these statements describes summation

The contraction phase of a muscle cell lasts longer than the relaxation phase.

Match the types of muscles, labelled a. and b., with the characteristics. -length changes

Single-unit smooth muscle and cardiac muscle are both self-excitable.

Match the types of muscles, labelled a. and b., with the characteristics. -used to accomplish movement

Which of these statements describes twitch summation

What is the functional unit of skeletal muscle

The two types of fast twitch fibres are interconvertible depending on the type of conditioning they receive.

Which of these characteristics are shared by all three types of muscle tissues

When does spastic paralysis occur

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) -can be transformed into another fibre type by specific training

Damage to the cerebellum or basal nuclei results in ______.

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 Ca²⁺ during contraction

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

Match the skeletal muscle proteins, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) -lie(s) near the groove of the thin filament helix

According to the sliding filament mechanism of muscle contraction, the muscle fibres of one motor unit slide in closer together between the muscle fibres of adjacent motor units.

Both multiunit and single-unit smooth muscles are under motor control from the autonomic nervous system.

During muscle contraction, which of the following becomes smaller

Which of these actions happens during muscle contraction