Human Anatomy Quiz: Respiratory & Wrist Muscles
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Questions and Answers

Which muscle is primarily responsible for elevating the ribs during deep inhalation?

  • External intercostals (correct)
  • Diaphragm
  • Internal intercostals
  • Abdominal muscles

What is the role of the internal intercostals in the respiratory process?

  • Elevate ribs during deep inhalation
  • Depress ribs during forced expiration (correct)
  • Facilitate passive expiration
  • Assist in resting inspiration

In which type of respiration are the diaphragm muscles primarily active?

  • Deep exhalation
  • Forced expiration
  • Emergency breathing
  • Resting inspiration (correct)

Which statement about the respiratory muscles is accurate?

<p>Internal intercostals assist in forced expiration by depressing ribs. (A)</p> Signup and view all the answers

Which muscle's contraction is most closely associated with forcing air out of the lungs?

<p>Internal intercostals (D)</p> Signup and view all the answers

Which muscle has wrist extension as its primary action?

<p>Extensor Carpi Radialis Longus (B)</p> Signup and view all the answers

What is the origin of Extensor Digitorum?

<p>Extensor indicis, digiti minimi (A)</p> Signup and view all the answers

Which muscles share the same antagonist?

<p>Extensor Carpi Radialis Brevis and Extensor Digitorum (C)</p> Signup and view all the answers

Which statement about Extensor Carpi Radialis Brevis is true?

<p>It assists in wrist extension. (D)</p> Signup and view all the answers

Which muscle is not primarily involved in wrist extension?

<p>Flexor Carpi Ulnaris (B)</p> Signup and view all the answers

Which muscle group is primarily responsible for spinal extension?

<p>Longissimus Group (A)</p> Signup and view all the answers

What role does the Rectus Abdominus play in relation to the Erector Spinae Group?

<p>Antagonist (D)</p> Signup and view all the answers

Which of the following statements about the Quadratus Lumborum is true?

<p>It is a synergist to the Erector Spinae Group. (C)</p> Signup and view all the answers

Which group is NOT involved in spinal extension?

<p>Rectus Abdominus (C)</p> Signup and view all the answers

What is the main function of the Spinalis Group?

<p>Spinal extension (A)</p> Signup and view all the answers

Which of the following muscle groups is NOT considered part of the Erector Spinae?

<p>Quadratus Lumborum (C)</p> Signup and view all the answers

What is the primary function of the Upper Trapezius muscle?

<p>Elevation of the scapula (D)</p> Signup and view all the answers

Which muscle is primarily responsible for the downward rotation of the scapula?

<p>Rhomboid Major (B)</p> Signup and view all the answers

What is the role of Serratus Anterior in scapular movement?

<p>Protraction and upward rotation of the scapula (D)</p> Signup and view all the answers

Which part of the Trapezius muscle is responsible for depressing the scapula?

<p>Lower Trapezius (C)</p> Signup and view all the answers

Which muscles are identified as antagonists of the Trapezius?

<p>Latissimus Dorsi (B)</p> Signup and view all the answers

What is the primary action of the Biceps Brachii muscle?

<p>Elbow flexion (D)</p> Signup and view all the answers

Which muscle serves as a synergist to the Brachialis?

<p>Brachioradialis (B)</p> Signup and view all the answers

Which muscle acts antagonistically to the Triceps Brachii?

<p>Biceps Brachii (B)</p> Signup and view all the answers

What is the primary action of the Triceps Brachii muscle?

<p>Elbow extension (C)</p> Signup and view all the answers

Which of the following is NOT a synergist to the Brachialis?

<p>Anconeus (C)</p> Signup and view all the answers

Which muscle assists the Triceps Brachii in elbow extension?

<p>Anconeus (B)</p> Signup and view all the answers

Which of the following muscles does not perform elbow flexion?

<p>Triceps Brachii (C)</p> Signup and view all the answers

What role does the Brachialis play in elbow movement?

<p>Primarily responsible for elbow flexion (A)</p> Signup and view all the answers

What action does the Orbicularis Oris primarily perform?

<p>Puckers and closes the lips (A)</p> Signup and view all the answers

Which of the following muscles are classified as synergists?

<p>Temporalis and Masseter (B)</p> Signup and view all the answers

Which function is associated with the Sternocleidomastoid muscle?

<p>Bilaterally flexes the neck (B)</p> Signup and view all the answers

What is the primary function of the Masseter muscle?

<p>Closes the mouth (A)</p> Signup and view all the answers

Which muscle is responsible for extending the head and neck?

<p>Splenius Capitis (D)</p> Signup and view all the answers

Which muscles work together to perform the action of closing the mouth?

<p>Masseter and Temporalis (A)</p> Signup and view all the answers

Which of the following functions is NOT performed by facial muscles?

<p>Flexing the neck (B)</p> Signup and view all the answers

What specific action is facilitated by the Temporalis muscle?

<p>Closing the mouth (A)</p> Signup and view all the answers

What is the combined action of the Masseter and Temporalis muscles?

<p>Closing the mouth (B)</p> Signup and view all the answers

Which muscle is not involved in the action of closing the mouth?

<p>Splenius Capitis (A)</p> Signup and view all the answers

Which muscle is responsible for both wrist flexion and radial deviation?

<p>Flexor Carpi Radialis (D)</p> Signup and view all the answers

What is the nerve supply for the Flexor Carpi Ulnaris?

<p>Ulnar nerve (B)</p> Signup and view all the answers

Which of the following muscles does NOT originate from the medial epicondyle of the humerus?

<p>Brachioradialis (B)</p> Signup and view all the answers

The primary action of the Brachioradialis is:

<p>Elbow flexion (B)</p> Signup and view all the answers

Which muscle assists in flexing the middle phalanges?

<p>Flexor Digitorum Superficialis (A)</p> Signup and view all the answers

Which insertion point is associated with the Flexor Carpi Ulnaris?

<p>Pisiform and hamate bones (A)</p> Signup and view all the answers

What action do the Palmaris Longus and Flexor Digitorum Superficialis have in common?

<p>Wrist flexion (D)</p> Signup and view all the answers

Which classification does the Flexor Digitorum Superficialis fall under?

<p>Finger flexors (C)</p> Signup and view all the answers

Which muscle is classified under elbow flexors while also being the only muscle listed that is innervated by the radial nerve?

<p>Brachioradialis (C)</p> Signup and view all the answers

Which of the following muscles has its origin from both the medial epicondyle of the humerus and the medial olecranon process of the ulna?

<p>Flexor Carpi Ulnaris (A)</p> Signup and view all the answers

Flashcards

Internal Intercostals

Muscles that depress the ribs, aiding in forced exhalation.

External Intercostals

Muscles that elevate the ribs, facilitating inhalation.

Diaphragm

A muscle involved in resting inhalation.

Forced exhalation

Deep exhalation utilizing accessory muscles.

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Resting inhalation

Inhalation that primarily uses the diaphragm.

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Extensor Carpi Ulnaris Action

Extends the wrist.

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Extensor Carpi Radialis Brevis Action

Extends the wrist, towards the radius bone.

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Extensor Digitorum Action

Extends fingers, also aids in wrist extension.

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Extensor Carpi Radialis Longus Action

Extends the wrist, towards the radius bone.

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Antagonist Muscles

Muscles that oppose the action of another muscle group.

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Erector Spinae Group

A group of back muscles responsible for spinal extension.

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Longissimus Group

Part of the Erector Spinae Group, involved in spinal extension.

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Spinalis Group

Part of the Erector Spinae Group, assisting in spinal extension.

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Iliocostalis Group

Part of the Erector Spinae Group, crucial in spinal extension.

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Quadratus Lumborum

A synergist to the Erector Spinae Group, not part of it.

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Rectus Abdominus

Antagonist to the Erector Spinae Group, opposing its action.

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Biceps Brachii Action

Flexes the elbow joint.

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Brachialis Action

Assists in elbow flexion.

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Brachialis Synergists

Brachioradialis and Biceps Brachii

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Brachialis Antagonist

Triceps Brachii

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Triceps Brachii Action

Extends the elbow joint.

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Triceps Brachii Synergist

Anconeus

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Triceps Brachii Antagonist

Biceps Brachii

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Elbow Flexion

Bending the elbow

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Palmaris Longus Action

Wrist flexion

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Flexor Carpi Radialis Action

Wrist flexion and radial deviation

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Flexor Carpi Ulnaris Action

Wrist flexion and ulnar deviation

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Brachioradialis Action

Elbow flexion

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Flexor Digitorum Superficialis Action

Flexes middle phalanges, assists in wrist flexion

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Palmaris Longus Origin

Medial epicondyle of humerus

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Flexor Carpi Radialis Insertion

Base of 2nd metacarpal

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Flexor Carpi Ulnaris Insertion

Pisiform and hamate bones

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Brachioradialis Insertion

Styloid process of radius

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Flexor Digitorum Superficialis Insertion

Middle phalanges of fingers 2-5

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Orbicularis Oris Function

Puckers and closes the lips

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Masseter Function

Closes the mouth

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Temporalis Function

Closes the mouth

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Sternocleidomastoid Function

Flexes the neck (nodding)

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Splenius Capitis Function

Extends the head and neck

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Synergistic Muscles

Muscles that work together to produce a movement

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Facial Muscle Example

Example muscle in the face

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Neck Muscle Example

Example muscle in the neck

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Masseter and Temporalis

Closing the mouth; synergists

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Facial Muscles Location

Located on the face

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Upper Trapezius function

Elevates the scapula (shrugs shoulders).

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Middle Trapezius function

Retracts (pulls it back) and adducts (pulls it towards the spine) the scapula

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Lower Trapezius function

Lowers and rotates the scapula upwards.

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Serratus Anterior function

Protracts (pulls forward) and upward rotates the scapula.

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Rhomboids (Major & Minor) function

Retracts and downward rotates the scapula.

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Study Notes

Respiratory Muscles

  • Intercostals (Internal): Depress ribs (deep exhalation/blowing)
  • Intercostals (External): Elevate ribs (inspiration/deep inhale)
  • Diaphragm: Resting inspiration

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Description

Test your knowledge about the major muscles involved in respiration and wrist movement. This quiz covers the roles of the diaphragm, intercostal muscles, and various muscles associated with wrist extension. Challenge yourself to identify their functions, origins, and relationships.

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