Classification of Skeletal Muscles Quiz

Questions and Answers

What is the action of the muscle referred to as?

Deltoid

Flexor digitorum superficialis (correct)

Biceps brachii

Pectoralis major

What shape is the muscle that is named deltoid?

Deltoid

Which muscles' origins and/or insertions are referenced in terms of location?

Pectoralis major and Biceps brachii

What muscle is known for having two origins?

Biceps brachii Signup and view all the answers

Which muscles are located relative to a bone or body region?

All of the above Signup and view all the answers

Which muscles have fibers running in a direction relative to an imaginary line?

Both A and B Signup and view all the answers

What is the name of the muscle that indicates relative size?

Pectoralis major Signup and view all the answers

Study Notes

Classification of Skeletal Muscles

Action of the Muscle: Represents the function a muscle performs. Example includes the Flexor digitorum superficialis, which flexes the fingers.
Shape of the Muscle: Refers to the overall form of the muscle. An example is the Deltoid, which has a triangular shape resembling the Greek letter delta (Δ).
Location of Origin and/or Insertion: Describes where a muscle begins and attaches. Notable examples are Pectoralis major, which is located in the chest, and Biceps brachii, found in the upper arm.
Number of Origins: Indicates how many points a muscle has where it originates. The Biceps brachii has two origins, which is reflected in its name ("bi" means two).
Location Relative to a Bone or Body Region: Identifies where the muscle is situated in relation to other structures. For instance, Erector spinae runs along the spine, while Abdominis transversus is located in the abdominal region, and External intercostals are found between the ribs.
Direction of Muscle Fibers: Describes how fibers align in relation to a reference line. For example, Rectus abdominis fibers run vertically, while Abdominis transversus fibers run horizontally.
Relative Size of the Muscle: Refers to the muscle's dimensions in comparison to others. The Pectoralis major is known for being one of the larger muscles in the chest area.

Description

Test your knowledge on the classification of skeletal muscles with this informative quiz. Each question focuses on different aspects such as muscle action, shape, origin, and location. Perfect for students of anatomy or anyone interested in understanding muscle classification.