Quiz 4- Wrist And Hand

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| By Shortyh23
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Shortyh23
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Quizzes Created: 5 | Total Attempts: 13,192
Questions: 26 | Attempts: 2,503

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Quiz 4- Wrist And Hand - Quiz

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Questions and Answers
  • 1. 

    The Prime movers for wrist extension are:

    • A.

      ECRL, ECRB, ECU

    • B.

      ECRL & ECRB

    • C.

      ECU, EPB, EPL

    • D.

      EDC

    Correct Answer
    A. ECRL, ECRB, ECU
    Explanation
    The prime movers for wrist extension are the muscles ECRL (Extensor Carpi Radialis Longus), ECRB (Extensor Carpi Radialis Brevis), and ECU (Extensor Carpi Ulnaris). These muscles work together to extend the wrist joint, allowing for movements such as lifting the hand upwards or bending the wrist backwards. The other options listed do not include all three of these muscles, making them incorrect choices.

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  • 2. 

    The prime movers for wrist radial deviation are: 

    • A.

      ECU, FCU

    • B.

      FCR, ECRL, ECRB

    • C.

      ECRL, ECRB, ECU

    • D.

      ECRL, ECRB, FPL

    Correct Answer
    B. FCR, ECRL, ECRB
    Explanation
    The prime movers for wrist radial deviation are the Flexor Carpi Radialis (FCR), Extensor Carpi Radialis Longus (ECRL), and Extensor Carpi Radialis Brevis (ECRB). These muscles work together to move the wrist in a radial deviation, which means moving the hand towards the thumb side of the forearm. The ECU (Extensor Carpi Ulnaris) and FCU (Flexor Carpi Ulnaris) are not prime movers for radial deviation, but they are involved in other movements of the wrist.

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  • 3. 

    All of the following statements describe the function of the arches of the hand except which one?

    • A.

      The arches of the hand allows the hand to shape itself around an object

    • B.

      The arches of the hand allows the hand to expand or flatten itself for weight bearing

    • C.

      The arches of the hand help to direct the fingers during grasp

    • D.

      The arches of the hand are comprised of longitudinal arches, horizontal arches, and vertical arches

    Correct Answer
    D. The arches of the hand are comprised of longitudinal arches, horizontal arches, and vertical arches
    Explanation
    The arches of the hand are not comprised of longitudinal arches, horizontal arches, and vertical arches.

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  • 4. 

    What are the primary movers to release a grasp?

    • A.

      EDC, extensor mechanism, EPL, EPB

    • B.

      EDC & lumbricals, interossei

    • C.

      FDP, FDS, EPL, EPB

    • D.

      ECRL, ECRB, EDC

    Correct Answer
    A. EDC, extensor mechanism, EPL, EPB
    Explanation
    The primary movers to release a grasp are the EDC (extensor digitorum communis) muscle, the extensor mechanism, and the EPL (extensor pollicis longus) and EPB (extensor pollicis brevis) muscles. These muscles work together to extend the fingers and thumb, allowing for the release of a grasp.

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  • 5. 

    What is the major functional role of the interossei muscles?

    • A.

      The interossei muscles allow for precise adjustments of finger position when handling small objects

    • B.

      The interossei muscles allow for adjustments of the fingers to add power to grip

    • C.

      The interossei muscles allow for precise adjustments of thumb position when handing small objects

    • D.

      The interossei muscles allow for adjustments of the fingers and thumb during power grip

    Correct Answer
    A. The interossei muscles allow for precise adjustments of finger position when handling small objects
    Explanation
    The interossei muscles are responsible for making precise adjustments to the position of the fingers when handling small objects. These muscles help in controlling the movement and position of the fingers, allowing for delicate and precise actions required for tasks such as writing, typing, or manipulating small objects. They play a crucial role in fine motor skills and dexterity.

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  • 6. 

    You are evaluating a patient's hand. You notice that the patient is posturing his hand w/ his little and ring fingers in a "claw" position. Pt. also demonstrates weakness of grip and an inability to oppose the little finger to thumb. What might this information indicate?

    • A.

      The patient has damage to his radial nerve

    • B.

      The patient has damage to his ulnar nerve

    • C.

      The patient has damage to his median nerve

    • D.

      The patient has damage to both his ulnar and median nerve

    Correct Answer
    B. The patient has damage to his ulnar nerve
    Explanation
    The patient's presentation of weakness in grip and an inability to oppose the little finger to the thumb, along with the claw-like hand position, suggests damage to the ulnar nerve. The ulnar nerve innervates the muscles responsible for these movements and its dysfunction can result in these specific symptoms.

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  • 7. 

    What is the finest (Most precise) form of prehension or hand grasp that can be accompanied by someone without intact hand musculature, but who has active wrist extension (example: sowmeone w/ a spinal cored injury above C-7)?

    • A.

      Pad-to-pad grip

    • B.

      Cylindrical grip

    • C.

      Spherical grip

    • D.

      Lateral pinch grip

    Correct Answer
    D. Lateral pinch grip
    Explanation
    The lateral pinch grip is the most precise form of prehension or hand grasp that can be accompanied by someone without intact hand musculature but with active wrist extension. This grip involves using the thumb and the side of the index finger to hold and manipulate objects. It allows for better control and precision compared to other grips like the pad-to-pad grip, cylindrical grip, or spherical grip. This grip is particularly useful for individuals with limited hand function due to conditions like spinal cord injury above C-7.

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  • 8. 

    When measuring joint ROM of wrist radial deviation or ulnar deviation using a goniometer, which carpal bone is used as the landmark for the axis of the goiniometer?

    • A.

      Lunate

    • B.

      Capitate

    • C.

      Scaphoid

    • D.

      Hamate

    Correct Answer
    B. Capitate
    Explanation
    When measuring joint ROM of wrist radial deviation or ulnar deviation using a goniometer, the carpal bone that is used as the landmark for the axis of the goniometer is the Capitate. The Capitate is one of the carpal bones located in the wrist, and it serves as a reference point for measuring the range of motion in radial and ulnar deviation.

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  • 9. 

    The intrinsic muscles of the thumb include which of the following muscles?

    • A.

      Abductor pollicus brevis, Flexor Pollicus Brevis, Adductor Pollicus, Opponens Pollicus

    • B.

      Abductor pollicus Longus, Extensor pollicus brevis, Adductor Pollicus, Opponens Pollicus

    • C.

      Abductor pollicus brevis, extensor pollicus longus, abductor pollicus longus

    • D.

      Extensor Pollicus brevis, Flexor pollicus longus, Flexor pollicus brevis, Opponens Pollicus

    Correct Answer
    A. Abductor pollicus brevis, Flexor Pollicus Brevis, Adductor Pollicus, Opponens Pollicus
    Explanation
    The correct answer includes the muscles Abductor pollicus brevis, Flexor Pollicus Brevis, Adductor Pollicus, and Opponens Pollicus. These muscles are all intrinsic muscles of the thumb, meaning they are located within the thumb itself and are responsible for its movements. The Abductor pollicus brevis muscle is responsible for moving the thumb away from the palm, the Flexor Pollicus Brevis muscle helps in flexing the thumb, the Adductor Pollicus muscle brings the thumb towards the palm, and the Opponens Pollicus muscle allows the thumb to oppose or touch the other fingers.

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  • 10. 

    What is the difference in mobility of the 2nd and 3rd CMC joints as compared to the 4th and 5th CMC joints and why does this difference impact function? 

    • A.

      Very little motion occurs at the 2nd and 3rd CMC joints as compared to the 4th and 5th CMC joints. The limited ROM of the 2nd and 3rd CMC joints provide stability for grasp functions of the muscles of the hand

    • B.

      More motion occurs at the 2nd and 3rd CMC joints as compared to the 4th and 5th CMC joints. The increased ROM of the 2nd and 3rd CMC joints provides mobility for grasp functions of the muscles of the hand

    • C.

      Very little motion occurs at the 4th and 5th CMC joints as compared to the 4th and 5th CMC joints. The limited ROM of the 4th and 5th joints provide stability for grasp functions of the mucles of the hand.

    • D.

      The same motion occurs at the 4th and 5th CMC joints as compared to the 2nd and 3rd CMC joints. The equality ROM of all the CMC joints provides stability and mobility for grasp functions of the muscles of the hand

    Correct Answer
    A. Very little motion occurs at the 2nd and 3rd CMC joints as compared to the 4th and 5th CMC joints. The limited ROM of the 2nd and 3rd CMC joints provide stability for grasp functions of the muscles of the hand
    Explanation
    The limited range of motion (ROM) at the 2nd and 3rd CMC joints provides stability for grasp functions of the muscles of the hand. This means that these joints are less mobile and have less movement compared to the 4th and 5th CMC joints. The limited ROM allows for a more stable grip and helps in activities that require precision and fine motor control.

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  • 11. 

    Which of the following statements best describes a function of the annular pulleys?

    • A.

      The annular pulleys help to prevent bow-stringing of the tendons of EDC

    • B.

      The annular pulleys help to hold the extensor tendons in place

    • C.

      Then annular pulleys help to prevent bow-stringing of the tendons of FDS and FDP

    • D.

      The annular pulleys help to provide stabilization at the wrist

    Correct Answer
    C. Then annular pulleys help to prevent bow-stringing of the tendons of FDS and FDP
    Explanation
    The annular pulleys are responsible for preventing bow-stringing of the tendons of FDS and FDP. Bow-stringing refers to the situation where the tendons are pulled away from the bones, causing them to lose their normal alignment and reducing their efficiency. The annular pulleys act as pulley systems that hold the tendons close to the bones, ensuring smooth movement and preventing bow-stringing. This helps to maintain the proper functioning and stability of the fingers and hand.

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  • 12. 

    What is the major difference in the movement control at the elbow aned shoulder when you use a power grip to manuipulate a object compared to when you use precision handling to manipulate an object?

    • A.

      When you using precision handling grip, movement occurs at the elbow and shoulder to move/transport object in space. When using power grip, movement occurs at finger joints, with elbow and shoulder in a stable position hen object is moved.

    • B.

      When using power grip, movment occurs at the shoulder and fingers to move/transport object in space. when using precision handling, movement occurs at the elbow, with shoulder and fingers in a stable position when object is moved.

    • C.

      When using power grip, movement occurs at elbow and shoulder to move/transport object in space. When using precision handling, movement occurs at finger joints, with the elbow and shoulder in a stable position when object is moved.

    • D.

      When using a power grip, movement occurs at elbow to move/transport object in space. When using precision handling, movement occurs at shoulder joints, with elbow and fingers in a stable position when object is moved.

    Correct Answer
    C. When using power grip, movement occurs at elbow and shoulder to move/transport object in space. When using precision handling, movement occurs at finger joints, with the elbow and shoulder in a stable position when object is moved.
    Explanation
    The major difference in movement control at the elbow and shoulder between using a power grip and precision handling is that when using a power grip, the movement occurs at the elbow and shoulder to move and transport the object in space. On the other hand, when using precision handling, the movement occurs at the finger joints, while the elbow and shoulder remain in a stable position when the object is moved.

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  • 13. 

    What is the closed packed position of the wrist?

    • A.

      Full wrist extension

    • B.

      Full wrist flexion and full wrist extension

    • C.

      Full wrist extension and full radial deviation

    • D.

      Full wrist extension and full ulnar deviation

    Correct Answer
    C. Full wrist extension and full radial deviation
    Explanation
    The closed packed position of the wrist refers to the position in which the joint surfaces are maximally congruent and stable. Full wrist extension and full radial deviation is the correct answer because this position allows for the greatest contact between the joint surfaces of the wrist, providing stability and reducing the risk of injury. Full wrist flexion and full wrist extension, as well as full ulnar deviation, do not provide the same level of congruency and stability as full wrist extension and full radial deviation.

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  • 14. 

    What is the normal end feel for radial deviation and why?

    • A.

      Normal end feel is firm and hard. Action stopped by ligaments and boney contact of radius and scaphoid.

    • B.

      Normal end feel is firm and hard. Action is stopped by ligaments and boney contact of ulna and triquetrium.

    • C.

      Normal end feel is firm. Action is stopped by ligaments

    • D.

      Normal end feel is soft and firm. Action stopped by ligaments and muscle contact of thenar eminence and ECRL and ECRB

    Correct Answer
    A. Normal end feel is firm and hard. Action stopped by ligaments and boney contact of radius and scaphoid.
    Explanation
    The normal end feel for radial deviation is firm and hard because the action is stopped by the ligaments and bony contact of the radius and scaphoid. This means that there is a solid and unyielding sensation when performing radial deviation due to the resistance provided by the ligaments and the contact between these two bones.

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  • 15. 

    Which of the following statements best describes the action of the fingers and thumb during inhand manipulation of palm to finger translation? 

    • A.

      The in-hand manipulation of palm to finger translation involves the ability to use one hand only to side an object between the fingers and thumb in a linear direction.

    • B.

      The in-hand manipulation of palm to finger translation involves the ability to use one hand only to rotate a small object within the hand by using the fingers and thumb.

    • C.

      The in-hand manipulation of the palm to finger translation invloves the ability to use one hand only to move a small object from the pads or tips of the fingers and thumb and move it to the palm of the hand

    • D.

      The in-hand manipulation of palm to finger translation involves the ability to use one hand only to move a small object from the palm of the hand and move it to the pads or tips of the fingers and thumb

    Correct Answer
    D. The in-hand manipulation of palm to finger translation involves the ability to use one hand only to move a small object from the palm of the hand and move it to the pads or tips of the fingers and thumb
    Explanation
    In-hand manipulation of palm to finger translation refers to the ability to move a small object from the palm of the hand to the pads or tips of the fingers and thumb. This action allows for precise control and manipulation of objects using only one hand.

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  • 16. 

    Identify the grasp pattern and whether it is a power or precision grip.

    • A.

      Pad-to pad grasp; precision grip

    • B.

      Cylindrical grasp; power grip

    • C.

      Tip-to-tip grasp; precision grip

    • D.

      Inter-digital grasp; precision grip

    Correct Answer
    C. Tip-to-tip grasp; precision grip
    Explanation
    The tip-to-tip grasp involves using the tips of the fingers to hold an object, allowing for precise manipulation and control. This type of grip is commonly used when performing tasks that require fine motor skills, such as writing or picking up small objects. It is considered a precision grip because it provides a high level of dexterity and control over the object being held.

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  • 17. 

    Which muscles of the thumb are affected in De Quervain’s tenosynovitis?

    • A.

      FPL, EPB, Adductor Pollicus

    • B.

      EPL, FPB, Opponens Pollicus

    • C.

      EPL, EPB, Abductor Pollicus Longus

    • D.

      EPB, Abductor Pollicus brevis, FPB

    Correct Answer
    C. EPL, EPB, Abductor Pollicus Longus
    Explanation
    De Quervain's tenosynovitis is a condition characterized by inflammation of the tendons in the thumb. The tendons affected in this condition are the Extensor Pollicis Brevis (EPB), Abductor Pollicis Longus (APL), and Extensor Pollicis Longus (EPL). These muscles are responsible for the movement and stability of the thumb. In De Quervain's tenosynovitis, these tendons become irritated and swollen, leading to pain and difficulty in thumb movement. Therefore, the correct answer is EPL, EPB, Abductor Pollicis Longus.

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  • 18. 

    Describe the bilateral function and hand grasp used in the following picture:

    • A.

      Bilateral symmetrical patterns; both hands using pad-to-pad grip

    • B.

      Bilateral symmetrical patterns; both hands using a lateral pinch grip

    • C.

      Bilateral asymmetrical patterns; one hand using a lateral pinch grip and other hand using a pad-to-pad grip

    • D.

      Bilateral symmetrical pattern; both hands using tip-to-tip grip

    Correct Answer
    A. Bilateral symmetrical patterns; both hands using pad-to-pad grip
    Explanation
    The correct answer states that the bilateral function and hand grasp used in the picture are bilateral symmetrical patterns, with both hands using a pad-to-pad grip. This means that both hands are performing the same movement pattern simultaneously, and the grip used involves pressing the pads of the fingers together. This grip allows for a strong and stable hold on an object, making it suitable for tasks that require precision and control.

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  • 19. 

    Describe the grasp pattern and whether it is a power or precsion grip:

    • A.

      Pad-to-pad grasp; precision grip

    • B.

      Spherical grasp; power grip

    • C.

      Inter-digital grasp; precision grip

    • D.

      Lateral pinch grasp; precision grip

    Correct Answer
    A. Pad-to-pad grasp; precision grip
    Explanation
    The pad-to-pad grasp involves using the pads of the fingers to hold an object. This grip is commonly used for delicate tasks that require fine motor control, such as picking up small objects or manipulating tools. It is considered a precision grip because it allows for precise and controlled movements.

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  • 20. 

    In wrist injury, which carpal bone is the most frequently fractured?

    • A.

      Trapezium

    • B.

      Lunate

    • C.

      Capitate

    • D.

      Scaphoid

    Correct Answer
    D. Scaphoid
    Explanation
    The scaphoid bone is the most frequently fractured carpal bone in wrist injuries. This is due to its location and shape, as it is located at the base of the thumb and is shaped like a boat. Its position makes it vulnerable to injury during falls or accidents where the wrist is forcefully bent backwards. Fractures of the scaphoid bone can cause pain, swelling, and limited mobility in the wrist, and they often require prompt medical attention to ensure proper healing.

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  • 21. 

    Which wrist position is least effective for grasp?

    • A.

      Full wrist flexion and full radial deviation

    • B.

      Full wrist extension and full ulnar deviation

    • C.

      Full wrist flexion or full wrist extension

    • D.

      Full wrist extension and full radial deviation

    Correct Answer
    C. Full wrist flexion or full wrist extension
    Explanation
    Full wrist flexion or full wrist extension is the least effective wrist position for grasp. In full wrist flexion, the wrist is bent downward, reducing the ability to effectively grip objects. Similarly, in full wrist extension, the wrist is bent upward, which also limits the strength and control of the grip. These extreme positions limit the range of motion and compromise the stability and strength required for a strong grasp.

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  • 22. 

    What is the major function role of the interossei muscles?

    • A.

      Allows for adjustments of fingers to add power to grip

    • B.

      Allows for precise adjustments of finger position when handling small objects

    • C.

      Allows for precise adjustments of thumb position when handling small objects

    • D.

      Allows for adjustments of fingers and thumb during power grip

    Correct Answer
    B. Allows for precise adjustments of finger position when handling small objects
    Explanation
    The interossei muscles play a major role in allowing for precise adjustments of finger position when handling small objects. These muscles are located between the metacarpal bones of the hand and are responsible for controlling the movement and position of the fingers. They enable fine motor control and dexterity, allowing for precise manipulation of objects with the fingers.

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  • 23. 

    How does ROM in the MCP joints change from the 2nd figner to the 5th finger and why does this difference impact function?

    • A.

      Joint ROM of MCP joint decreases from radial side of the hand to ulnar side of the hand. This decrease in ROM helps the ulnar side of the hand shape itself around objects during grasp and adds power to grasp

    • B.

      Joint ROM of MCP joint stays the same from radial side of the hand to ulnar side of the hand. This allows the ROM of the MCP joints to add precision control to grasp

    • C.

      Joint ROM and MCP joint increases from ulnar side of the hand to radial side of the hand. This increase in ROM helps the radial side of the hand shape itself around objects during grasp and adds precision to grasp

    • D.

      Joint ROM and MCP joint increases from radial side of the hand to ulnar side of the hand. This increase in ROM helps the ulnar side of the hand to shape itself around objects during grasp and adds power to grasp

    Correct Answer
    D. Joint ROM and MCP joint increases from radial side of the hand to ulnar side of the hand. This increase in ROM helps the ulnar side of the hand to shape itself around objects during grasp and adds power to grasp
  • 24. 

    Functions of the volar plate incude all of the following EXCEPT which one? 

    • A.

      The volar plate increases contact surface for the metacarpal head

    • B.

      The volar plate helps limit hypertension of MCP joints

    • C.

      The volar plate prevents bow-stringing of the tendons of FDS & FDP

    • D.

      The volar plate prevents pinch of the flexor tendons at the MCP joint

    Correct Answer
    C. The volar plate prevents bow-stringing of the tendons of FDS & FDP
    Explanation
    The volar plate prevents bow-stringing of the tendons of FDS & FDP. Bow-stringing refers to the tendons of FDS and FDP being pulled away from the joint axis, causing them to lose their optimal position for efficient finger flexion. The volar plate acts as a pulley system, keeping the tendons close to the joint axis and preventing bow-stringing. Therefore, this statement is incorrect as it contradicts the function of the volar plate.

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  • 25. 

    How would you position the arm when testing hand strength using a dynamometer? How many times do you ask your patient to squeeze the dynamometer and how do you record the score?

    • A.

      Arm should be positioned with shoulder abducted to 90 degrees and with the elbow at 90 degrees. Have patient squeeze the dynamometer 2 times and record the highest score.

    • B.

      Arm should be positioned with shoulder adducted and next to the body and with the elbow at 90 degrees. Have patient squeeze the dynamometer 3 times and record the average score.

    • C.

      Arm should be positioned with shoulder adducted and next to the body and with the elbow fully extended. Have patient squeeze the dynamometer 4 times and record the average score.

    • D.

      Arm should be positioned with shoulder adducted and externally rotated and with the elbow at 90 degrees. Have patient squeeze the dynamometer 3 times and record the highest score.

    Correct Answer
    B. Arm should be positioned with shoulder adducted and next to the body and with the elbow at 90 degrees. Have patient squeeze the dynamometer 3 times and record the average score.
    Explanation
    The arm should be positioned with the shoulder adducted and next to the body, with the elbow at 90 degrees. This position allows for optimal leverage and stability during the test. The patient should be asked to squeeze the dynamometer three times, and the average score should be recorded. Taking multiple measurements helps to account for any variations in strength that may occur during the test, and taking the average score provides a more accurate representation of the patient's hand strength.

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  • 26. 

    Describe the grasp pattern and whether it is a power or precsion grip:

    • A.

      Pad-to-pad grasp; precision grip

    • B.

      Spherical grasp; power grip

    • C.

      Inter-digital grasp; precision grip

    • D.

      Lateral pinch grasp; precision grip

    Correct Answer
    A. Pad-to-pad grasp; precision grip
    Explanation
    The pad-to-pad grasp involves using the pads of the fingers to hold an object. This grip allows for precise control and manipulation of small objects, making it a precision grip.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jun 07, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 21, 2012
    Quiz Created by
    Shortyh23
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