BetterPostureSchool.com Muscles of the Forearm, Pronation & Supination

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Questions: 9 | Attempts: 113 | Updated: Dec 11, 2023

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Betterpostureschool.Com Muscles Of The Forearm, Pronation & Supination - Quiz

Better Posture School open quiz on the muscles of the forearm, supination and pronation

Questions and Answers

1.

Name the muscle pictured:
- A.
  
  Anconeus
- B.
  
  Supinator
- C.
  
  Brachialis
- D.
  
  Pronator Teres
Correct Answer
B. Supinator

Explanation
The correct answer is Supinator. The Supinator muscle is located in the forearm and is responsible for supination, which is the movement that allows the palm to face upwards. It is named "Supinator" because it helps to rotate the forearm in a way that the palm faces upwards. The other options listed are muscles that are also located in the forearm but have different functions.

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2.

Name the muscle pictured:
- A.
  
  Brachialis
- B.
  
  Brachioradialis
- C.
  
  Biceps Brachii
- D.
  
  Coracobrachialis
Correct Answer
C. Biceps Brachii

Explanation
The correct answer is Biceps Brachii. The Biceps Brachii is a muscle located in the upper arm. It is a two-headed muscle, meaning it has two points of origin. It originates from the scapula and inserts into the radius bone of the forearm. The Biceps Brachii is responsible for flexing the elbow joint and supinating the forearm. It is a prominent muscle that is easily visible in the front of the upper arm.

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3.

Name the muscle pictured:
- A.
  
  Brachialis
- B.
  
  Coracobrachialis
- C.
  
  Brachioradialis
- D.
  
  Biceps Brachii
Correct Answer
C. Brachioradialis

Explanation
The muscle pictured in the question is the Brachioradialis. It is located in the forearm and helps to flex the forearm at the elbow joint. It is easily identifiable due to its long and slender shape, running along the lateral aspect of the forearm. The other options, such as the Brachialis, Coracobrachialis, and Biceps Brachii, are muscles located in the upper arm and have different functions.

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4.

Name the muscle pictured:
- A.
  
  Pronator Quadratus
- B.
  
  Pronator Teres
- C.
  
  Brachiais
- D.
  
  Supinator
Correct Answer
A. Pronator Quadratus

Explanation
The correct answer is Pronator Quadratus. Pronator Quadratus is a muscle located in the forearm that plays a role in pronation of the forearm. It is a square-shaped muscle that runs between the ulna and radius bones. Its main function is to rotate the forearm medially, allowing the palm to face downwards.

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5.

Name the muscle pictured:
- A.
  
  Flexor Carpi Ulnaris
- B.
  
  Flexor Carpi Radialis
- C.
  
  Palmar Longus
- D.
  
  Extensor Carpi Radialis Longus
Correct Answer
B. Flexor Carpi Radialis

Explanation
The muscle pictured in the question is the Flexor Carpi Radialis. This muscle is located in the forearm and is responsible for flexing the wrist and abducting the hand. It is one of the main muscles involved in wrist flexion and is located on the inner side of the forearm, close to the thumb.

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6.

Name the muscle pictured:
- A.
  
  Pronator Quadratus
- B.
  
  Pronator Teres
- C.
  
  Brachialis
- D.
  
  Supinator
Correct Answer
B. Pronator Teres

Explanation
The correct answer is Pronator Teres. The Pronator Teres is a muscle located in the forearm. It is responsible for pronating or rotating the forearm and hand inwards. It is a relatively small muscle that runs from the medial epicondyle of the humerus to the radius bone. Its main function is to assist in the movement of the forearm during activities such as turning a doorknob or using a screwdriver.

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7.

Name the muscle shown in the attachment site photos:
- A.
  
  Anconeus
- B.
  
  Pronator Teres
- C.
  
  Pronator Quadratus
- D.
  
  Supinator
Correct Answer
C. Pronator Quadratus

Explanation
The correct answer is Pronator Quadratus. The Pronator Quadratus is a muscle located in the forearm. It is a square-shaped muscle that runs horizontally across the forearm. Its main function is to pronate the forearm, which means to rotate the palm of the hand downwards. This muscle plays an important role in activities such as gripping, throwing, and twisting motions of the forearm and wrist.

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8.

Name the muscle shown in the attachment site photo:
- A.
  
  Flexor Carpi Ulnaris
- B.
  
  Flexor Carpi Radialis
- C.
  
  Palmar Longus
- D.
  
  Extensor Carpi Radialis Longus
Correct Answer
B. Flexor Carpi Radialis

Explanation
The muscle shown in the attachment site photo is the Flexor Carpi Radialis.

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9.

Name the muscle shown in the attachment site photo:
- A.
  
  Brachialis
- B.
  
  Biceps brachii
- C.
  
  Brachioradialis
- D.
  
  Triceps
Correct Answer
C. Brachioradialis

Explanation
The muscle shown in the attachment site photo is the brachioradialis. This muscle is located in the forearm and runs along the lateral side of the forearm, from the upper arm to the wrist. It is responsible for flexing the forearm at the elbow joint and is involved in movements such as lifting and supination of the forearm. The brachioradialis is easily identifiable due to its location and distinct shape, making it the correct answer in this case.

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