Exam 7: The Muscular System

Regarding a skeletal muscle fiber, wherever a T-tubule encircles a myofibril, the tubule is tightly bound to

Each myofibril consists of approximately ________ sarcomeres.

The muscle that originates along the entire length of the linea aspera of the femur is the

A muscle ________ contains a sarcolemma, sarcoplasm, myofilaments, and myofibrils.

Neurotransmitters that cause skeletal muscle contraction are normally stored in

Figure 7-1 Structural Components of a Skeletal Muscle Fiber Use Figure 7-1 to identify the labeled part. -Structure E is the

The term used to describe muscular growth in response to usage is

The skeletal muscles store calcium ions in the terminal cisternae of the

In response to action potentials arriving from the transverse tubules, the sarcoplasmic reticulum releases

Which of the following is a muscle that originates from the zygomatic arch and functions in elevating the mandible?

Tom is having difficulty dorsiflexing and inverting his right foot. Which muscle is most likely involved in this problem?

The deltoid acts to

Which of the following muscles acts to flex the finger joints and wrist?

The muscle that produces the action of standing on tip-toes is the

Which muscle is not part of the rotator cuff set of muscles?

Figure 7-1 Structural Components of a Skeletal Muscle Fiber Use Figure 7-1 to identify the labeled part. -Structure I is composed of

Which of the following is the origin of the pectoralis minor?

The area of the sarcomere that is the light region between two successive A-bands is the

Which of the following terms is a descriptive word for a muscle's action?

The area between Z lines is the