Musculoskeletal System Practice Problems

When does rigor mortis start to develop?

Why do muscle cells need to have many mitochondria?

Which of the following must take place in order to expose the myosin-binding site?

Which of the following makes a movement possible?

Four individuals are actively engaged in four different sports, which are listed below. Which of the following sports is most likely to increase the proportion of slow-twitch fibers?

Which of the following is the most expensive mode of animal locomotion that requires more energy per unit body mass per unit distance?

A long-distance runner is likely to have a ______ proportion of __________ muscles.

Determine what will happen to the number of muscle cells in a person who does weight training.

A sprinter usually has a ______ proportion of ________ muscles.

Which of the following is/are relatively high in slow-twitch muscle fibers as compared to fast-twitch muscle fibers?

Which of the following muscles are voluntary?

What is the role of troponin in muscle contraction? 

Which of the following do not have an endoskeleton?

Identify which of the following is a flat bone.

Which of the following molecules binds Ca⁺ ions released by the sarcoplasmic reticulum?

Identify which of the following is NOT a characteristic of fast-twitch fibers.

What happens when acetylcholine binds to its receptor on muscle cells?

Which of the following contributes to the regulation of muscle tension?

Which of the following cells synthesize and secrete bone matrix?

Which of the following neurotransmitters is released by motor neurons at the neuromuscular junction?

Identify which of the following proteins is NOT a component of the thin filaments of the sarcomere.

In an antagonistic muscle pair, the contracting muscle is referred to as the ________, and the relaxing muscle is referred to as the _________.

Which of the following forces must be overcome for locomotion to occur?

The skeleton which consists of fluid held under pressure that gives the hydra its body shape and support for muscle action is called ______.

When are arthropods such as crabs very susceptible to predation?

How do mollusks adjust their exoskeletons while they grow?

What is the primary advantage of having a hydrostatic skeleton such as in hydra and earthworms?

Earthworms have a type of movement in which rhythmic waves of muscle contractions are produced from head to tail. This movement is called _____.

Which of the following skeleton types is common among all vertebrates?

Which body structure of earthworms grips the ground and provides traction as they move?

Which portion of the sarcomere does not change whether the muscle is relaxed or contracted?