Anatomy Chapter 10.7 Flashcards

Questions and Answers

All fibers of the pectoralis major muscle converge on the lateral edge of the _______________.

interubercular sulcus

The anterior axial muscle that crosses the glenohumeral joints is the pectoralis major muscle.

True

The posterior axial muscle that crosses the glenohumeral joint is the ___________________________.

latissimus dorsi

The deltoid muscle fibers are separated into __________________.

anterior, middle, and posterior Signup and view all the answers

The middle fibers of the deltoid muscle __________________.

abduct the arm Signup and view all the answers

The external intercostals elevate the rib cage during ____________.

inspiration Signup and view all the answers

The origin of the external obliques includes ribs ________________.

five through twelve Signup and view all the answers

The infraspinatus inserts on the ____________ of the humerus.

greater tubercle Signup and view all the answers

The infraspinatus muscle is included in the __________ muscles.

rotator cuff Signup and view all the answers

The actions of the internal intercostals are most important during __________.

forced expiration Signup and view all the answers

The actions of the internal obliques include ____________________.

compression of the abdomen to assist in forced expiration Signup and view all the answers

The latissimus dorsi inserts _____________________.

on the intertubercular groove of the humerus Signup and view all the answers

One of the actions of the latissimus dorsi muscle is to _____________________.

adduct the arm Signup and view all the answers

Which joint is considered the most flexible joint in the body?

the shoulder joint Signup and view all the answers

Muscles of the shoulder can be divided into groups based on __________.

distribution and functional relationship Signup and view all the answers

Which of the following groups of muscles are not muscles of the shoulder?

The anterior flexor muscles Signup and view all the answers

Of the nine muscles that cross the shoulder joint and insert on the humerus, which muscle is considered to be a prime mover?

deltoid Signup and view all the answers

Which of the following muscles is not part of the shoulder?

Brachialis Signup and view all the answers

The pectoralis muscle can be divided into groups of fibers superior, or , and inferior, or .

clavicular (superior); sternocostal (inferior) Signup and view all the answers

The key actions of the pectoralis major muscles are __________.

medial rotation and adduction Signup and view all the answers

The pectoralis minor muscle is innervated by the __________.

pectoral nerve Signup and view all the answers

Which muscle is not part of the rotator cuff?

teres major muscle Signup and view all the answers

The angle of which muscle prevents the humeral head from sliding upward out of the joint as the arm is raised?

subscapularis Signup and view all the answers

Downward dislocation of the humerus from the glenohumeral joint when carrying weight is prevented by the __________.

supraspinatus muscle Signup and view all the answers

The rotator cuff is a term used to describe the group of muscles and tendons that stabilize and reinforce the __________.

glenohumeral joint Signup and view all the answers

All the tendons of the rotator cuff muscles combine at which location?

humeral head Signup and view all the answers

The origin of the serratus anterior includes __________ ribs.

8 Signup and view all the answers

The subscapularis muscle inserts on the __________.

lesser tubercle of the humerus Signup and view all the answers

The insertion of the supraspinatus muscle is on the __________.

greater tubercle of the humerus Signup and view all the answers

The teres major adducts the arm but does not _______________ the arm.

abduct Signup and view all the answers

The insertion of the teres minor is on the __________.

greater tubercle of the humerus Signup and view all the answers

The trapezius muscle may be separated into all of the following groups, except __________.

Lateral Signup and view all the answers

All fibers of the trapezius muscle are innervated by the _____________.

spinal accessory nerve Signup and view all the answers

Identify the levator ani muscle.

d Signup and view all the answers

What is the name and origin of the muscle at A?

ischiocavernosus; ischial tuberosities Signup and view all the answers

Which muscle is innervated by the S3 nerve, S4 nerve, and the inferior rectal nerve (a branch of the pudendal nerve)?

levator ani Signup and view all the answers

Which muscle inserts on the greater tubercle of the humerus?

infraspinatus Signup and view all the answers

Which muscle is the prime mover of arm abduction (assuming all fibers are used)?

deltoid Signup and view all the answers

Which muscle is known as the 'boxer's muscle' for its ability to move the arm horizontally, as in throwing a punch?

serratus anterior Signup and view all the answers

Which of the following muscles is known in this image but is NOT indicated with a letter?

deltoid Signup and view all the answers

Which muscle is a prime mover of arm abduction?

deltoid Signup and view all the answers

Which of the following is not a muscle primarily involved in the breathing process?

Latissimus dorsi Signup and view all the answers

The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?

to initiate abduction of the arm, to stabilize the shoulder joint and to help prevent downward dislocation of the humerus Signup and view all the answers

The abnormal protrusion of the small intestine through a weak point in the muscle of the abdominal wall is called a ____________.

hernia Signup and view all the answers

The ________ is a synergist of the latissimus dorsi; it extends, medially rotates, and adducts the humerus.

teres major Signup and view all the answers

Which of the following is INCORRECTLY paired?

Biceps brachii; shoulder extension Signup and view all the answers

Which of the following is NOT a rotator cuff muscle?

Teres major Signup and view all the answers

Study Notes

Muscles of the Shoulder and Arm

The intertubercular sulcus is the convergence point for all fibers of the pectoralis major muscle.
The pectoralis major is the anterior axial muscle crossing the glenohumeral joint.
The latissimus dorsi is the posterior axial muscle that crosses the glenohumeral joint.
Deltoid muscle fibers are divided into anterior, middle, and posterior groups.
The middle fibers of the deltoid muscle are responsible for arm abduction.
External intercostals elevate the rib cage during inspiration.
The external obliques originate from ribs five through twelve.
The infraspinatus muscle inserts on the greater tubercle of the humerus, contributing to shoulder stability.
The infraspinatus is included among the rotator cuff muscles.
Internal intercostals are most crucial during forced expiration.
Functions of internal obliques include compression of the abdomen to assist in forced expiration.
The latissimus dorsi inserts on the intertubercular groove of the humerus.
One of the primary actions of the latissimus dorsi is to adduct the arm.
The shoulder joint is recognized as the most flexible joint in the body.
Muscles of the shoulder can be categorized based on their distribution and functional relationship.
Anterior flexor muscles are not categorized as shoulder muscles.
Deltoid is the prime mover among the nine muscles that cross the shoulder joint and insert on the humerus.
Brachialis is not included in the shoulder muscle group.
The pectoralis major can be divided into clavicular (superior) and sternocostal (inferior) portions.
Key actions of pectoralis major include medial rotation and adduction of the arm.
The pectoral nervous innervates the pectoralis minor muscle.
The teres major muscle is not part of the rotator cuff.
The subscapularis prevents the humeral head from sliding upward out of the joint during arm elevation.
The supraspinatus muscle prevents downward dislocation of the humerus when carrying weight.
The rotator cuff stabilizes the glenohumeral joint.
All rotator cuff muscle tendons converge at the humeral head.
The serratus anterior originates from eight ribs.
The subscapularis muscle inserts on the lesser tubercle of the humerus.
The supraspinatus muscle inserts on the greater tubercle of the humerus.
The teres major adducts the arm but does not abduct it.
Teres minor also inserts on the greater tubercle of the humerus.
The trapezius muscle is categorized into three groups, excluding lateral.
The spinal accessory nerve innervates all fibers of the trapezius muscle.

Miscellaneous

The levator ani muscle can be identified and includes innervation by S3, S4, and the inferior rectal nerve.
Abnormal protrusion of the small intestine through a weak point in the abdominal wall is termed a hernia.
The teres major acts as a synergist with the latissimus dorsi, assisting in extending, medially rotating, and adducting the humerus.
Incorrectly paired functions include the pectoral major, which is correctly known for its role in arm adduction, not abduction.

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Test your knowledge of anatomy with these flashcards focused on Chapter 10.7. Each card features key terms related to the human muscular system, specifically the pectoralis major and latissimus dorsi muscles. Ideal for students wanting to reinforce their understanding of axial muscles.

Anatomy Chapter 10.7 Flashcards

Questions and Answers

All fibers of the pectoralis major muscle converge on the lateral edge of the _______________.

The anterior axial muscle that crosses the glenohumeral joints is the pectoralis major muscle.

The posterior axial muscle that crosses the glenohumeral joint is the ___________________________.

The deltoid muscle fibers are separated into __________________.

The middle fibers of the deltoid muscle __________________.

The external intercostals elevate the rib cage during ____________.

The origin of the external obliques includes ribs ________________.

The infraspinatus inserts on the ____________ of the humerus.

The infraspinatus muscle is included in the __________ muscles.

The actions of the internal intercostals are most important during __________.

The actions of the internal obliques include ____________________.

The latissimus dorsi inserts _____________________.

One of the actions of the latissimus dorsi muscle is to _____________________.

Which joint is considered the most flexible joint in the body?

Muscles of the shoulder can be divided into groups based on __________.

Which of the following groups of muscles are not muscles of the shoulder?

Of the nine muscles that cross the shoulder joint and insert on the humerus, which muscle is considered to be a prime mover?

Which of the following muscles is not part of the shoulder?

The pectoralis muscle can be divided into groups of fibers superior, or __________, and inferior, or __________.

The key actions of the pectoralis major muscles are __________.

The pectoralis minor muscle is innervated by the __________.

Which muscle is not part of the rotator cuff?

The angle of which muscle prevents the humeral head from sliding upward out of the joint as the arm is raised?

Downward dislocation of the humerus from the glenohumeral joint when carrying weight is prevented by the __________.

The rotator cuff is a term used to describe the group of muscles and tendons that stabilize and reinforce the __________.

All the tendons of the rotator cuff muscles combine at which location?

The origin of the serratus anterior includes __________ ribs.

The subscapularis muscle inserts on the __________.

The insertion of the supraspinatus muscle is on the __________.

The teres major adducts the arm but does not _______________ the arm.

The insertion of the teres minor is on the __________.

The trapezius muscle may be separated into all of the following groups, except __________.

All fibers of the trapezius muscle are innervated by the _____________.

Identify the levator ani muscle.

What is the name and origin of the muscle at A?

Which muscle is innervated by the S3 nerve, S4 nerve, and the inferior rectal nerve (a branch of the pudendal nerve)?

Which muscle inserts on the greater tubercle of the humerus?

Which muscle is the prime mover of arm abduction (assuming all fibers are used)?

Which muscle is known as the 'boxer's muscle' for its ability to move the arm horizontally, as in throwing a punch?

Which of the following muscles is known in this image but is NOT indicated with a letter?

Which muscle is a prime mover of arm abduction?

Which of the following is not a muscle primarily involved in the breathing process?

The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?

The abnormal protrusion of the small intestine through a weak point in the muscle of the abdominal wall is called a ____________.

The ________ is a synergist of the latissimus dorsi; it extends, medially rotates, and adducts the humerus.

Which of the following is INCORRECTLY paired?

Which of the following is NOT a rotator cuff muscle?

Study Notes

Muscles of the Shoulder and Arm

Miscellaneous

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