Muscle Up Flashcards Chapter 10 Part 1

Questions and Answers

__________ are muscles that serve as the primary promoters of a movement.

agonist

Which class of muscle has the major responsibility for a specific movement?

agonist

When the term biceps, triceps, or quadriceps forms part of a muscle's name, what does it tell you about the muscle?

The muscle has two, three, or four origins, respectively.

A muscle group that works with and assists the action of a prime mover is a(n) ________.

synergist Signup and view all the answers

Which generalization concerning movement by skeletal muscles is not true?

During contraction the two articulating bones move equally. Signup and view all the answers

Which of the following is not used as a criterion for naming muscles?

Whether the muscle is controlled by the involuntary or voluntary nervous system Signup and view all the answers

Choose the false statement.

Hamstrings promote knee rotation. Signup and view all the answers

Which of the following muscles is named for its origin and insertion?

sternocleidomastoid Signup and view all the answers

What are the muscles that are found at openings of the body collectively called?

circular muscles Signup and view all the answers

Which of these is not a way of classifying muscles?

the type of muscle fibers Signup and view all the answers

Muscles are only able to pull, they never push.

False Signup and view all the answers

Muscles that help to maintain posture are often called synergists.

False Signup and view all the answers

Which of the following is correctly matched?

Convergent arrangement of fascicles: fan-shaped muscle Signup and view all the answers

Most skeletal muscles of the body act as:

third-class levers. Signup and view all the answers

Which of the following movements demonstrates a first-class lever?

raising your head up off your chest Signup and view all the answers

Which type of lever is demonstrated by using scissors?

first class lever Signup and view all the answers

What is the major factor controlling how levers work?

the difference in the positioning of the effort, load, and fulcrum Signup and view all the answers

Which of the following describes fascicle arrangement in a pennate muscle?

The fascicles are short and attach obliquely to a central tendon that runs the length of a muscle. Signup and view all the answers

What is the main factor that determines the power of a muscle?

the total number of muscle cells available for contraction Signup and view all the answers

If a lever operates at a mechanical disadvantage, it means that the ________.

load is far from the fulcrum and the effort is applied near the fulcrum Signup and view all the answers

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?

synergist Signup and view all the answers

In a pennate muscle pattern ________.

muscles look like a feather Signup and view all the answers

What are the levers that operate at a mechanical advantage called?

power levers Signup and view all the answers

First-class levers ________.

in the body can operate at a mechanical advantage or mechanical disadvantage, depending on specific location. Signup and view all the answers

If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF?

third-class lever Signup and view all the answers

Both first- and second-class levers operate at a mechanical disadvantage.

False Signup and view all the answers

Although all skeletal muscles have different shapes, the fascicle arrangement of each muscle is exactly the same.

False Signup and view all the answers

Regardless of type, all levers follow the same basic principle: effort farther than load from fulcrum = mechanical advantage; effort nearer than load to fulcrum = mechanical disadvantage.

False Signup and view all the answers

Study Notes

Muscle Terminology and Function

Agonists are muscles that primarily promote a movement.
Synergists assist agonists in their actions.
Circular muscles are located at body openings.

Muscle Naming Criteria

Naming is not based on control by the involuntary or voluntary nervous system.
Muscle names indicating biceps, triceps, or quadriceps reflect the number of muscle origins.

Muscle Arrangement and Classification

The muscle named sternocleidomastoid is categorized by its origin and insertion.
Fascicles in pennate muscles are short and attach obliquely to a central tendon.
Convergent muscles have a fan-shaped arrangement.

Lever Systems and Mechanics

Most skeletal muscles function as third-class levers.
First-class levers, like scissors, can operate at a mechanical advantage or disadvantage.
The position of effort, load, and fulcrum determines lever function.

Muscle Power and Contraction

The power of a muscle depends on the total number of muscle cells available for contraction.
Muscles can only pull; they cannot push.

Demonstrating Leverage

Examples of different lever systems include:
- First-class lever: Raising your head off your chest
- Third-class lever: Described as LEF, where L = load, F = fulcrum, E = effort
Power levers operate at a mechanical advantage.

Correct and False Statements

Hamstrings do not promote knee rotation.
Muscles that maintain posture are not typically categorized as synergists.
Not all skeletal muscles have identical fascicle arrangements.

General Principles

All levers follow basic principles regarding mechanical advantage and disadvantage based on the arrangement of effort, load, and fulcrum.

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Description

Test your knowledge on muscle terminology with these flashcards from Chapter 10 Part 1. This quiz focuses on the definitions and classifications of agonist muscles and the significance of muscle names such as biceps and triceps. Prepare to enhance your understanding of muscular anatomy!

Muscle Up Flashcards Chapter 10 Part 1

Questions and Answers

__________ are muscles that serve as the primary promoters of a movement.

Which class of muscle has the major responsibility for a specific movement?

When the term biceps, triceps, or quadriceps forms part of a muscle's name, what does it tell you about the muscle?

A muscle group that works with and assists the action of a prime mover is a(n) ________.

Which generalization concerning movement by skeletal muscles is not true?

Which of the following is not used as a criterion for naming muscles?

Choose the false statement.

Which of the following muscles is named for its origin and insertion?

What are the muscles that are found at openings of the body collectively called?

Which of these is not a way of classifying muscles?

Muscles are only able to pull, they never push.

Muscles that help to maintain posture are often called synergists.

Which of the following is correctly matched?

Most skeletal muscles of the body act as:

Which of the following movements demonstrates a first-class lever?

Which type of lever is demonstrated by using scissors?

What is the major factor controlling how levers work?

Which of the following describes fascicle arrangement in a pennate muscle?

What is the main factor that determines the power of a muscle?

If a lever operates at a mechanical disadvantage, it means that the ________.

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?

In a pennate muscle pattern ________.

What are the levers that operate at a mechanical advantage called?

First-class levers ________.

If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF?

Both first- and second-class levers operate at a mechanical disadvantage.

Although all skeletal muscles have different shapes, the fascicle arrangement of each muscle is exactly the same.

Regardless of type, all levers follow the same basic principle: effort farther than load from fulcrum = mechanical advantage; effort nearer than load to fulcrum = mechanical disadvantage.

Study Notes

Muscle Terminology and Function

Muscle Naming Criteria

Muscle Arrangement and Classification

Lever Systems and Mechanics

Muscle Power and Contraction

Demonstrating Leverage

Correct and False Statements

General Principles

Studying That Suits You

Description

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