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Questions and Answers
What are the functions of the arm, wrist, and hand?
What are the functions of the arm, wrist, and hand?
Actuates upper body movement and function, transfers force and power from the upper torso, and supports dexterous movement for the upper limbs.
Which of the following bones are found in the upper limb?
Which of the following bones are found in the upper limb?
Which of the following joints are found in the arm?
Which of the following joints are found in the arm?
The elbow joint is a true hinge joint.
The elbow joint is a true hinge joint.
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The radioulnar joints are ball-and-socket joints.
The radioulnar joints are ball-and-socket joints.
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At which joints do pronation and supination occur?
At which joints do pronation and supination occur?
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Which of the following ligaments are found in the elbow joint?
Which of the following ligaments are found in the elbow joint?
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How many bones are there in the hand?
How many bones are there in the hand?
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How many phalanges are there in each finger?
How many phalanges are there in each finger?
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How many metacarpals are there?
How many metacarpals are there?
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Which of the following are carpals?
Which of the following are carpals?
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Which of the following are types of movements at the elbow?
Which of the following are types of movements at the elbow?
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Which of the following are types of movements at the forearm?
Which of the following are types of movements at the forearm?
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Which group of muscles cause flexion at the elbow?
Which group of muscles cause flexion at the elbow?
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Which of the following muscles cause flexion at the elbow?
Which of the following muscles cause flexion at the elbow?
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Which muscles cause pronation?
Which muscles cause pronation?
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The biceps brachii is the strongest of the bicep muscles.
The biceps brachii is the strongest of the bicep muscles.
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Why is the brachioradialis the predominant supinator?
Why is the brachioradialis the predominant supinator?
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What is tennis elbow?
What is tennis elbow?
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Study Notes
Upper Limb Anatomy and Function
- The arm, wrist, and hand allow for upper body movement, force transfer, and precise upper limb manipulation.
Bones of the Upper Limb
- Humerus
- Radius
- Ulna
Joints of the Arm
- Elbow joint
- Radiohumeral joint
- Humeroulnar joint
- Proximal radioulnar joint
- Distal radioulnar joint
Elbow Joint Type
- A true hinge joint
Radioulnar Joint Types
- Pivot joints
Pronation and Supination
- Occur at the radioulnar joints
Elbow Joint Ligaments
- Annular ligament
- Radial collateral ligament
- Ulnar collateral ligament
- Biceps tendon
- Triceps tendon
Hand Bones
- 28-30 bones in total
Phalanges
- 3 phalanges per finger
- 2 phalanges in the thumb
Metacarpals
- 5 metacarpals
Carpals
- 8 carpals
Carpal Bones
- Scaphoid
- Lunate
- Triquetrum
- Pisiform
- Hamate
- Capitate
- Trapezoid
- Trapezium
Elbow Movements
- Flexion
- Extension
Forearm Movements
- Supination (palm up)
- Pronation (palm down)
Flexion Muscles (Anterior)
- Biceps brachii
- Brachialis
- Brachioradialis
Extension Muscles (Posterior)
- Triceps brachii
- Anconeus
Pronation Muscles
- Pronator quadratus
- Pronator teres
- Brachioradialis (transition from supination)
Supination Muscles
- Supinator
- Brachioradialis (transition from pronation)
- Biceps brachii (transition from pronation)
Strongest Bicep Muscle
- Bicep brachii
Brachioradialis and Supination
- The brachioradialis's unique origin and insertion wrap around the arm, making it a primary supinator.
Tennis Elbow
- Inflammation of the lateral epicondyle (condyle)
- Often due to overuse of wrist extensor muscles.
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Description
Test your knowledge on the anatomy and function of the upper limb, including bones, joints, and movements. This quiz covers the structure of the arm, wrist, and hand, along with details about various ligaments and joint types. Perfect for students studying anatomy or related fields!
