Test Bank for Seeleys Anatomy and Physiology 13th Edition by Cinnamon VanPutte: Practice Questions

Cross bridges are formed by?

A muscle fiber is a?

The plasma membrane of the muscle fiber is known as the?

The cytoplasm within the muscle fiber is known as?

The cytoplasm within the muscle fiber contains a molecule to distribute oxygen within the cell. This molecule is known as?

The market within the cytoplasm of a muscle fiber that stores glucose for quick energy release is?

The microfilaments within the muscle fiber are?

Thick filaments within the myofibril are composed primarily of?

Thin filaments within the myofibril are composed primarily of?

The elastic filament within a myofibril is composed of molecules known as?

The elastic filaments within a myofibril are attached to Z disks and to the molecule?

In the myofibril, ATP is used for?

Which of the following muscle cells have the smallest diameter?

Which muscle type has long cylindrical shaped cells?

Which type of muscle is not branched and has one nucleus per cell?

What type of muscle does not have striations?

Which type of muscle is usually under voluntary control?

What type of muscle is found in the walls of the small intestine?

What type of muscle is found in the middle layer of the aorta?

An action potential is?

What best describes the use of skeletal muscle tone in the body?

Action potential frequency is best described as?

Triads in skeletal muscle consist of which of the following?

When acetylcholine is broken down by acetylcholine esterase in the synaptic cleft, what happens to the choline?

The recovery stroke of myosin involves which of the following?

Which of the following is one of the primary functions of muscle tissue?

The ability of a muscle to be stimulated is called?

Which of the following muscle types is involuntary and is the most widely found throughout the body?

Which of the following types of muscles contain intercalated disks and branching fibers?

Which of the following muscle types contains peripherally located multiple nuclei in its cells?

The striations in striated muscle correspond with actual molecular structures. Which of the following is the Z disc?

The striations in striated muscle correspond with actual molecular structures. Which of the following is the I band?

The striations in striated muscle correspond with actual molecular structures. Which of the following is the H band?

Which of the following is the A band within a myofibril?

Which of the following is the unit in a myofibril from Z disk to Z disk?

Which of the following best describes a motor unit?

On the surface of the sarcolemma, the membrane potential may depolarize and repolarize rapidly. This change in the electrical potential caused by membrane permeability changes for ions is known as?

During a muscle action potential, calcium is released into the sarcoplasm near the actin and myosin molecules. Which of the following is the best explanation of what the calcium does?

When the myosin head of the thick filament flexes into a bend while releasing ADP and inorganic phosphate, pulling the thin filament along with it, this is called the?

When the thick and thin filaments slide past each other, which of the following is true?

The tissues of cardiac muscle have unique structures known as?

Intercalated disks are capable of doing which of the following?

Invaginations of the sarcolemma are called?

Slow twitch oxidative fibers contain myoglobin and many?

Cardiac tissue has?

Which of the following proteins attaches Z discs to myosin myofilaments?

The functional connection between a nerve axon terminal and a muscle fiber is called a?

When the neuron stimulates a muscle fiber, what molecule diffuses across the synaptic cleft?

Once a signal molecule has left the neuron and binds to a receptor molecule on the surface of the muscle fiber, a sodium channel opens allowing more sodium entry into the muscle fiber and the creation of an action potential. Which substance is then released into the sarcoplasmic reticulum?

Muscle fibers and neurons are called electrically excitable cells because?

Movement of which protein directly causes exposure of the active sites on the actin molecule?

What type of molecule is acetylcholine?

Binding of acetylcholine with its receptor on muscle cells causes?

What kind of molecule is the acetylcholine receptor?

What is the function of acetylcholinesterase?

What is the typical value of the resting potential of the sarcolemma?