Exam 6: The Muscular System

Fascicle arrangements produce skeletal muscles with different structures and functional properties, and determine their individual range of motion and power. List the seven different fascicle arrangements of human skeletal muscles and give a specific example of each.

Describe where and how dorsiflexion and plantar flexion occur. Which muscle is the prime mover of plantar flexion and which muscle do you think is its antagonist?

Match the following: -Chemical that enters a muscle cell upon excitation

The heads of the myosin myofilaments are called ________ when they link the thick and thin filaments together during skeletal muscle contraction.

Cardiac and skeletal muscle both possess striations.

What is the unstoppable electrical current that travels down the length of the entire surface of a sarcolemma?

A neuromuscular junction consists of one neuron and all the skeletal muscles it stimulates.

Which of the following is NOT a function of the muscular system?

You have lost the labels to your muscle tissue slides in laboratory. Explain the characteristics that allow you to distinguish among skeletal muscle, smooth muscle, and cardiac muscle tissue.

Which of the following muscles are antagonists?

Which of these muscles is located on the ventral (anterior) side of the body?

Match the following: -The sarcoplasmic reticulum stores this chemical

What is released by axon terminals into the synaptic cleft to stimulate a muscle to contract?

What creates the alternating light and dark bands that provides the striation pattern on skeletal muscle tissue?

The fastest mechanism for producing ATP is aerobic respiration.

The striations seen in skeletal muscle are actually alternating dark A and light I bands.

Match the following: -Type of movement that points the toes

Using Figure 6.1, match the following: -The myofilament composed of actin is indicated by ________.

Match the following: -Primary action of the adductor muscles

Using Figure 6.1, match the following: -The H zone, located within the A band, lacks thin filaments and is represented by ________.