Human Body Muscles: Origins And Insertions

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Erica_234
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Quizzes Created: 1 | Total Attempts: 141
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  • 1/15 Questions

    The origin site of the deltoids is the lateral third of the __________, acromion and spine of the scapula.

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About This Quiz

This quiz focuses on the origins, insertions, and actions of various human body muscles, such as the rhomboids major, pectoralis major, and serratus anterior. It assesses knowledge crucial for students and professionals in medical and health-related fields.

Human Body Muscles: Origins And Insertions - Quiz

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  • 2. 

    The origin of teres minor is the ___________ border of the scapula. 

    Explanation
    The correct answer is "lateral" because the teres minor muscle originates from the lateral border of the scapula. This means that it attaches to the outer edge of the scapula, specifically the part that is furthest away from the spine.

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  • 3. 

    The origin of pectoralis major is the anterior surface of the clavicle, sternum and the costal cartilage of the upper 6 ribs. 

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The pectoralis major muscle originates from the anterior surface of the clavicle, sternum, and the costal cartilage of the upper 6 ribs. This means that it attaches to these structures and originates from them. Therefore, the statement is true.

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  • 4. 

    What are the rotator cuff muscles?

    • Supraspinatus, subscapularis, deltoids and teres major

    • Supraspinatus, infraspinatus, teres minor and subscapularis

    • Supraspinatus, infraspinatus, teres major and subscapularis

    Correct Answer
    A. Supraspinatus, infraspinatus, teres minor and subscapularis
    Explanation
    The rotator cuff muscles are a group of four muscles that help stabilize and move the shoulder joint. These muscles include the supraspinatus, infraspinatus, teres minor, and subscapularis. They work together to provide strength and stability to the shoulder, allowing for a wide range of motion.

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  • 5. 

    The insertion of pectoralis minor is the medial border of the coracoid process of the scapula.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The pectoralis minor muscle inserts on the medial border of the coracoid process of the scapula. This means that the muscle attaches to the inner edge of the coracoid process, which is a bony projection on the scapula. Therefore, the statement is true.

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  • 6. 

    What is the action of supraspinatus?

    • Abduct the arm

    • Adduct the arm

    • Lateral rotation of the arm

    Correct Answer
    A. Abduct the arm
    Explanation
    The action of the supraspinatus muscle is to abduct the arm. Abduction refers to the movement of the arm away from the midline of the body. The supraspinatus muscle is one of the four muscles that make up the rotator cuff in the shoulder. It is located on the top of the shoulder blade and attaches to the upper arm bone. When the supraspinatus muscle contracts, it helps to initiate and assist in the movement of lifting the arm out to the side, away from the body.

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  • 7. 

    What is the main action of serratus anterior? 

    • Retraction of the scapula

    • Protraction of the scapula

    • Rotation of the arm

    Correct Answer
    A. Protraction of the scapula
    Explanation
    The main action of the serratus anterior muscle is protraction of the scapula. This means that it is responsible for pulling the scapula forward and away from the spine. This action is important for movements such as reaching forward or pushing objects away from the body. The serratus anterior also assists in stabilizing the scapula against the rib cage during arm movements, but its primary function is protraction of the scapula.

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  • 8. 

    Pectoralis minor is a muscle of scapula stabilisation. 

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The pectoralis minor is indeed a muscle that contributes to scapula stabilization. It originates from the third, fourth, and fifth ribs and inserts into the coracoid process of the scapula. When contracted, it pulls the scapula forward and downward, aiding in stabilizing the shoulder blade. Therefore, the statement "Pectoralis minor is a muscle of scapula stabilization" is true.

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  • 9. 

    The action of pectoralis minor is to_________ the shoulder and scapula.

    Correct Answer
    Depress
    Explanation
    The action of the pectoralis minor muscle is to depress the shoulder and scapula. This means that it pulls the shoulder and scapula downward, towards the feet. This action is important for movements such as lowering the arm or retracting the scapula.

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  • 10. 

    The origin of the deltoids is the deltoid tuberosity on the lateral surface of the shaft of the humerus. 

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The origin of the deltoids is not the deltoid tuberosity on the lateral surface of the shaft of the humerus. The deltoids actually originate from the lateral third of the clavicle, the acromion process of the scapula, and the spine of the scapula. The deltoid tuberosity, on the other hand, is the insertion point for the deltoid muscle, where it attaches to the humerus. Therefore, the correct answer is False.

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  • 11. 

    What is the orgin of rhomboids major? 

    • T2-T5

    • C7-T1

    • T3-T5

    Correct Answer
    A. T2-T5
    Explanation
    The origin of the rhomboids major muscle is from the T2-T5 vertebrae.

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  • 12. 

    Where does pectoralis major insert into? 

    • Clavicle

    • Lateral border of the bicipital groove of the humerus

    • Greater tubercle of the humerus

    Correct Answer
    A. Lateral border of the bicipital groove of the humerus
    Explanation
    The pectoralis major muscle inserts into the lateral border of the bicipital groove of the humerus. This means that the muscle attaches to the upper arm bone (humerus) at a specific location along its outer edge.

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  • 13. 

    The origin of the middle fibres of the trapezius is

    • T2-T5

    • T1-T5

    • T6-T12

    Correct Answer
    A. T1-T5
    Explanation
    The correct answer is T1-T5 because the origin of the middle fibers of the trapezius muscle is from the spinous processes of the first to the fifth thoracic vertebrae. These fibers then insert into the acromion process and the spine of the scapula.

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  • 14. 

    The insertion point of the upper fibres of the trapezius is

    • Lateral third of the scapula and acromion

    • Lateral third of scapula

    • Lateral third of clavicle and acromion

    Correct Answer
    A. Lateral third of the scapula and acromion
    Explanation
    The correct answer is "lateral third of the scapula and acromion." The trapezius muscle is a large muscle that extends from the base of the skull down to the middle of the back and laterally to the shoulder. It has multiple insertion points, but the upper fibers of the trapezius insert into the lateral third of the scapula and the acromion. These insertion points allow the trapezius muscle to play a role in the movement and stabilization of the shoulder blade and shoulder joint.

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  • 15. 

    The action of subscapularis is lateral rotation of the arm. 

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The subscapularis muscle is responsible for the medial rotation of the arm, not the lateral rotation. Therefore, the statement that the action of the subscapularis is lateral rotation of the arm is incorrect.

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  • Current Version
  • Apr 08, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 21, 2011
    Quiz Created by
    Erica_234
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