Anatomy ACSM Flashcards

Questions and Answers

What is the function of the Teres Major?

Extends the arm

Adducts the arm

Medially rotates the arm

All of the above (correct)

Which muscle rotates the arm laterally?

Teres Minor (correct)

Pectoralis Major

Teres Major

Latissimus Dorsi

What is the primary action of the Pectoralis Major?

Adducts and flexes the humerus.

The quadriceps femoris includes rectus femoris and three other muscles that primarily __________ the knee.

extend Signup and view all the answers

What does the Latissimus Dorsi do?

Extends, adducts, and medially rotates the arm. Signup and view all the answers

The transverse abdominal helps to compress the ribs and viscera.

True Signup and view all the answers

What is the function of the Deltoid Muscles?

All of the above Signup and view all the answers

What actions do the Trapezius perform?

Elevates, depresses, retracts, and rotates the scapula. Signup and view all the answers

What is the role of the Rectus Abdominis?

Flexes the vertebral column and compresses the abdomen. Signup and view all the answers

What is the main function of the gluteus maximus?

Main extensor muscle of the hip Signup and view all the answers

What do the obliques do?

They function to pull the chest downwards and compress the abdominal cavity. Signup and view all the answers

What is the function of the internal intercostal muscles?

Facilitate forced expiration. Signup and view all the answers

What is the primary action of the Rhomboid Muscles?

Retracts the scapula. Signup and view all the answers

Study Notes

Teres Major

Extends, adducts, and medially rotates the arm/humerus
A flattened muscle that brings the arm toward the body, assisting in extending the arm from a flexed position
Functions oppositely to Teres Minor and other rotator cuff muscles

Teres Minor

Rotates the arm laterally and is a part of the rotator cuff
Assists in bringing the arm toward the body and strengthens the shoulder joint

Pectoralis Major

Responsible for adducting and flexing the humerus
Aids in rotating the arm forward about the body's axis
Assists latissimus dorsi and teres major during activities like mountain climbing by pulling the trunk upward

Quadriceps Femoris

Comprised of rectus femoris (extends knee and flexes hips) and three vastus muscles (lateralis, medialis, intermedius), which primarily extend the knee
Involved in leg movements and stabilization

Latissimus Dorsi

Extends, adducts, and medially rotates the arm; pulls the shoulder downward and backward
Functions primarily in arm adduction, crucial for pull-ups, rowing, or lowering heavy objects
Medially rotates the arm, moving the front of the arm towards the body's midline

Transverse Abdominal

Compresses the abdominal wall and laterally rotates the waist
Provides thoracic and pelvic stability, acting as the body's natural weightlifting belt during lifts

Deltoid Muscles

Facilitate raising arms sideways
Anterior portion flexes and medially rotates the humerus
Middle part abducts the humerus, while the posterior section extends and laterally rotates the humerus

Trapezius

Elevates, depresses, retracts, and rotates the scapula; extends the head at the neck
A wide, flat muscle covering the upper back
Upper section elevates scapula, middle retracts it, and lower retracts and depresses it

Rectus Abdominis

Flexes the vertebral column and compresses the abdomen
Essential postural muscle, involved in movements like "crunch" sit-ups

Obliques

Side abdominal muscles that pull the chest down and compress the abdominal cavity
Involved in ipsilateral (same side) side-bending and contralateral (opposite side) rotation

Intercostal Muscles

Located between the ribs, crucial for ventilation
Facilitate chest cavity expansion and contraction for breathing
Includes external (forced inhalation) and internal (forced expiration) muscles

Rhomboid Muscles

Rhombus-shaped muscles associated with the scapula
Primarily responsible for scapular retraction

Gluteus Maximus

Main extensor of the hip, vital for maintaining trunk posture
Engaged in various sports, including running and weightlifting

Description

Test your knowledge of key anatomical terms and definitions with these flashcards. This quiz covers muscles such as the teres major and teres minor, focusing on their functions and locations in the body. Perfect for studying anatomy in the context of physical fitness and medicine.