Exam 6: The Peripheral Nervous System: Afferent Division; Special Senses

With twitch summation, the muscle fibre is stimulated so rapidly that it does not have an opportunity to return to resting potential between stimuli.

Match the skeletal muscle proteins, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) a.actin only b.myosin only c.actin and myosin d.troponin-tropomyosin complex e.actin, troponin, and tropomyosin f.actin, myosin, troponin, and tropomyosin -spherical

Which of these statements correctly describes summation?

Which of these statements correctly describes gap junctions?

How are sarcomeres arranged end to end?

The H zone of the sarcomere consists of myosin but does not contain actin.

Which of these muscle types is striated and contains gap junctions?

Match the bands, labelled a. through c., with the descriptions. (Options may be used more than once or not at all.) a.A band b.I band c.H zone -shortens during muscle contraction

Ligaments attach muscles to bones.

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.) a.skeletal muscle only b.single-unit smooth muscle only c.cardiac muscle only d.skeletal muscle and cardiac muscle e.skeletal muscle and single-unit smooth muscle f.single-unit smooth muscle and cardiac muscle g.skeletal, single-unit smooth, and cardiac muscles -attached to bones

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.) a.skeletal muscle only b.single-unit smooth muscle only c.cardiac muscle only d.skeletal muscle and cardiac muscle e.skeletal muscle and single-unit smooth muscle f.single-unit smooth muscle and cardiac muscle g.skeletal, single-unit smooth, and cardiac muscles -contain(s) gap junctions

During muscle contraction, the A band becomes shorter.

Joints serve as fulcrums for muscle action.

Twitch summation is similar to the ____________________ summation of EPSPs.

A(n) ____________________ develops following sustained anaerobic activity of muscles.

According to the sliding filament mechanism of muscle contraction, the thick filaments slide in closer together to shorten the sarcomere.

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.) a.skeletal muscle only b.single-unit smooth muscle only c.cardiac muscle only d.skeletal muscle and cardiac muscle e.skeletal muscle and single-unit smooth muscle f.single-unit smooth muscle and cardiac muscle g.skeletal, single-unit smooth, and cardiac muscles -innervated by motor neurons

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) a.slow-oxidative fibre b.fast-oxidative fibre c.fast-glycolytic fibre -found predominantly in muscles adapted for short-duration, high-intensity activities

The M line is formed by a flattened disc-like cytoskeletal protein that connects the thin filaments of two adjoining sarcomeres.

Which of these statements correctly describes myosin?