Human Anatomy: Joint Movements and Muscles

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Questions and Answers

What muscle is primarily responsible for wrist extension and radial deviation?

  • Extensor carpi radialis longus (correct)
  • Flexor carpi radialis
  • Extensor carpi ulnaris
  • Flexor carpi ulnaris

Which muscle is involved in flexing the wrist and contributing to ulnar deviation?

  • Extensor carpi radialis brevis
  • Flexor carpi radialis
  • Extensor carpi ulnaris
  • Flexor carpi ulnaris (correct)

Which of the following muscles is NOT associated with wrist extension?

  • Extensor carpi ulnaris
  • Flexor carpi radialis (correct)
  • Extensor carpi radialis longus
  • Extensor carpi radialis brevis

What is the primary action of the Extensor carpi ulnaris?

<p>Wrist extension and ulnar deviation (C)</p> Signup and view all the answers

Which pair of muscles contributes to both radial and ulnar deviation at the wrist?

<p>Extensor carpi radialis brevis and Flexor carpi radialis (C)</p> Signup and view all the answers

Which muscle is primarily responsible for ankle dorsiflexion?

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

What action does the gastrocnemius muscle perform?

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

Which of the following muscles contributes to ankle inversion?

<p>Tibialis anterior (A)</p> Signup and view all the answers

Which muscle is NOT involved in plantarflexion of the ankle?

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

Which muscle is primarily responsible for ankle eversion?

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

The primary function of the soleus muscle is to assist in which movement?

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

Which two muscles are primarily responsible for ankle plantarflexion?

<p>Soleus and Gastrocnemius (A)</p> Signup and view all the answers

Which of the following muscles is engaged during ankle inversion?

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

Which muscle is primarily responsible for shoulder adduction?

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

Which muscle is involved in shoulder abduction?

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

Which muscle group aids in lateral rotation of the shoulder?

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

Which type of shoulder movement is primarily performed by the Pectoralis major muscle?

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

In which action does the Biceps brachii primarily function?

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

What role does the Supraspinatus play in shoulder motion?

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

Which muscle assists in medial rotation of the shoulder?

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

Which muscle is NOT involved in shoulder lateral rotation?

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

Which muscle is primarily responsible for knee flexion?

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

Which muscle assists in hip flexion?

<p>Rectus femoris (A)</p> Signup and view all the answers

What is the primary function of the gluteus maximus?

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

Which muscle is NOT involved in knee extension?

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

Which muscle primarily contributes to knee flexion in addition to the hamstrings?

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

Which muscle is involved in both hip flexion and knee flexion?

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

Which of the following muscles extends the knee?

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

Which is NOT a muscle that plays a role in hip extension?

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

Which muscle is primarily responsible for hip adduction?

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

Which muscles are associated with hip abduction?

<p>Gluteus medius and gluteus minimus (D)</p> Signup and view all the answers

What action is the gluteus minimus primarily responsible for?

<p>Medial rotation of the hip (B)</p> Signup and view all the answers

Which muscle contributes to lateral rotation of the hip?

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

Which action is primarily performed by the pectoralis major?

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

Which of the following muscles is involved in shoulder extension?

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

Which muscle is NOT associated with shoulder flexion?

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

What is a function of the teres major?

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

Which muscle is primarily responsible for elbow pronation?

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

Which of the following muscles is involved in elbow supination?

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

Which muscle assists with wrist flexion?

<p>Flexor carpi ulnaris (B)</p> Signup and view all the answers

Which muscle is known to perform wrist extension?

<p>Extensor carpi radialis longus (A)</p> Signup and view all the answers

Which of the following muscles is NOT associated with elbow joint movement?

<p>Flexor carpi radialis (C)</p> Signup and view all the answers

Which muscle works antagonistically to the pronator teres?

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

What is the primary role of the anconeus muscle?

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

Which muscle group would you associate with wrist flexion?

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

Flashcards

Ankle Dorsiflexion

The movement of the foot upwards towards the shin, flexing the ankle joint.

Ankle Plantarflexion

The movement of the foot downwards, pointing the toes away from your body.

Ankle Inversion

The movement of the sole of the foot inwards, towards the midline of the body.

Ankle Eversion

The movement of the sole of the foot outwards, away from the midline of the body.

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Tibialis Anterior

A muscle on the front of the lower leg, responsible for ankle dorsiflexion and inversion.

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Gastrocnemius

A muscle on the back of the lower leg, responsible for ankle plantarflexion.

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Soleus

A muscle on the back of the lower leg, deep to the gastrocnemius, also responsible for ankle plantarflexion.

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Peroneus Longus

A muscle on the outside of the lower leg, responsible for ankle eversion.

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Hamstrings

A muscle that helps in flexing the knee joint.

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Peroneus Brevis

A muscle located on the outer side of the lower leg that plays a role in eversion of the foot (turning it outwards) and plantarflexion (pointing the toes downwards).

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Rectus Femoris

A large muscle located on the front of the thigh, extending from the hip to the knee. It is responsible for extending the knee joint.

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Adductors

A muscle group responsible for hip adduction, which is the movement of the thigh towards the midline of the body.

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Sartorius

A muscle that aids in flexing the knee and extending the hip.

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Gluteus Maximus

A muscle responsible for extending the hip joint, and plays a pivotal role in walking and running.

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Quadriceps

A muscle group responsible for extending the knee joint.

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Biceps Femoris

A muscle located on the back of the thigh, helping to flex the knee and extend the hip.

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Hip Adduction

A muscle that moves the femur (thigh bone) towards the midline of the body.

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Hip Lateral Rotation

A muscle that rotates the femur (thigh bone) laterally (outwards).

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Hip Abduction

A muscle that moves the femur (thigh bone) away from the midline of the body.

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Hip Medial Rotation

A muscle that rotates the femur (thigh bone) medially (inwards).

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Shoulder Flexion

A muscle that raises the arm (shoulder flexion).

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Shoulder Extension

A muscle that lowers the arm (shoulder extension).

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Shoulder Adduction

A muscle that moves the arm forward and across the chest (horizontal adduction).

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Shoulder Abduction

A muscle that moves the arm backward and away from the chest (horizontal abduction).

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Radial Deviation

A movement of the wrist that moves the hand towards the thumb side of the forearm.

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Ulnar Deviation

A movement of the wrist that moves the hand towards the pinky side of the forearm.

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Extensor Carpi Radialis Longus

A muscle responsible for radial deviation of the wrist. It helps move the hand towards the thumb side.

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Extensor Carpi Radialis Brevis

A muscle responsible for radial deviation of the wrist. It also helps move the hand towards the thumb side.

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Extensor Carpi Ulnaris

A muscle responsible for ulnar deviation of the wrist. It helps move the hand towards the pinky side.

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Shoulder lateral rotation

The rotation of the shoulder joint, bringing the arm outwards so that the palm faces upward.

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Shoulder medial rotation

The rotation of the shoulder joint, bringing the arm inwards so that the palm faces downward. The palm faces down.

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Elbow flexion

The movement of the forearm so that the palm of the hand faces upwards.

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Elbow extension

The movement of the forearm so that the palm of the hand faces downwards.

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Supination

The movement of the forearm so that the palm faces upwards.

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Biceps Brachii

A muscle in the upper arm responsible for supination (turning the palm upwards) of the forearm and elbow flexion.

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Supinator

A muscle in the lower arm responsible for supination (turning the palm upwards)

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Pronation

The movement of the forearm so that the palm faces downwards.

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Pronator Teres

A muscle in the lower arm responsible for pronation (turning the palm downwards) of the forearm.

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Pronator Quadratus

A muscle in the lower arm responsible for pronation (turning the palm downwards) of the forearm.

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Triceps Brachii

A muscle in the back of the upper arm responsible for extending the elbow (straightening the arm).

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Anconeus

A muscle in the back of the elbow that helps extend the elbow.

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Study Notes

Ankle Movements and Muscles

  • Ankle Dorsiflexion: Tibialis anterior, Extensor digitorum longus
  • Ankle Plantarflexion: Soleus, Gastrocnemius
  • Ankle Inversion: Tibialis anterior, Tibialis posterior
  • Ankle Eversion: Peroneus longus, Peroneus brevis

Knee Movements and Muscles

  • Knee Flexion: Hamstrings, Gracilis, Rectus femoris
  • Knee Extension: Rectus femoris, Vastus lateralis

Hip Movements and Muscles

  • Hip Flexion: Sartorius
  • Hip Extension: Gluteus maximus, Biceps femoris
  • Hip Adduction: Adductor longus, Adductor brevis
  • Hip Abduction/ Hip Medial Rotation: Gluteus medius, Gluteus minimus
  • Hip Lateral Rotation: Piriformis, Quadratus femoris

Shoulder Movements and Muscles

  • Shoulder Flexion: Pectoralis major, Deltoid, Latissimus dorsi, Teres major
  • Shoulder Extension: Latissimus dorsi, Pectoralis major, Deltoid
  • Shoulder Adduction: Pectoralis major, Deltoid, Latissimus dorsi
  • Shoulder Abduction: Supraspinatus, Deltoid
  • Shoulder Lateral Rotation: Infraspinatus, Teres minor
  • Shoulder Medial Rotation: Deltoid, Pectoralis major

Elbow Movements and Muscles

  • Elbow Flexion: Biceps brachii, brachialis
  • Elbow Extension: Triceps brachii, anconaeus
  • Elbow Pronation: Pronator teres
  • Elbow Supination: Pronator quadratus, Biceps brachii, supinator

Wrist Movements and Muscles

  • Wrist Flexion: Flexor carpi radialis
  • Wrist Extension: Extensor carpi radialis brevis, Extensor carpi radialis longus
  • Wrist Radial Deviation: Extensor carpi radialis longus, Extensor carpi radialis brevis,
  • Wrist Ulnar Deviation: Flexor carpi ulnaris, Extensor carpi ulnaris

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