Question 1

What nerve innervates the flexor digitorum superficialis?

Accepted Answer

A) median nerve 
B) axillary nerve 
C) radial nerve 
D) ulnar nerve 
A) median nerve 
B) axillary nerve 
C) radial nerve 
D) ulnar nerve

Question 2

Which muscles attach onto the thumb?

Accepted Answer

A) extensor digiti minimi and extensor pollicis longus 
B) extensor indicis and extensor pollicis brevis 
C) abductor pollicis longus and extensor pollicis brevis 
D) flexor digitorum superficialis and extensor digiti minimi 
A) extensor digiti minimi and extensor pollicis longus 
B) extensor indicis and extensor pollicis brevis 
C) abductor pollicis longus and extensor pollicis brevis 
D) flexor digitorum superficialis and extensor digiti minimi

Question 3

Which is an action of the extensor pollicis longus?

Accepted Answer

A) flexion of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
B) flexion of the hand at the wrist joint 
C) extension of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
D) ulnar deviation (adduction)of the hand at the wrist joint 
A) flexion of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
B) flexion of the hand at the wrist joint 
C) extension of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
D) ulnar deviation (adduction)of the hand at the wrist joint

Question 4

Which is an action of the extensor digiti minimi?

Accepted Answer

A) extension of the little finger (finger number five)at the metacarpophalangeal and proximal and distal interphalangeal joints 
B) flexion of the little finger (finger number five)at the metacarpophalangeal and proximal and distal interphalangeal joints 
C) flexion of the hand at the wrist joint 
D) flexion of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
A) extension of the little finger (finger number five)at the metacarpophalangeal and proximal and distal interphalangeal joints 
B) flexion of the little finger (finger number five)at the metacarpophalangeal and proximal and distal interphalangeal joints 
C) flexion of the hand at the wrist joint 
D) flexion of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints

Question 5

Why do wrist extensor muscles contract when a person flexes his or her fingers to make a fist?

Accepted Answer

A) they contract as fixators (stabilizers)to prevent the hand from flexing at the wrist joint 
B) they contract as fixators (stabilizers)to prevent the hand from extending at the wrist joint 
C) they contract as antagonists to prevent the fingers from extending 
D) they contract as antagonists to prevent the fingers from flexing 
A) they contract as fixators (stabilizers)to prevent the hand from flexing at the wrist joint 
B) they contract as fixators (stabilizers)to prevent the hand from extending at the wrist joint 
C) they contract as antagonists to prevent the fingers from extending 
D) they contract as antagonists to prevent the fingers from flexing

Question 6

Which is an eccentric function of the extensor indicis?

Accepted Answer

A) restrains/slows extension of the hand at the wrist joint 
B) restrains/slows flexion of the little finger (finger number five)at the metacarpophalangeal and proximal and distal interphalangeal joints 
C) restrains/slows flexion of the index finger (finger number two)at the metacarpophalangeal and proximal and distal interphalangeal joints 
D) restrains/slows extension of the index finger (finger number two)at the metacarpophalangeal and proximal and distal interphalangeal joints 
A) restrains/slows extension of the hand at the wrist joint 
B) restrains/slows flexion of the little finger (finger number five)at the metacarpophalangeal and proximal and distal interphalangeal joints 
C) restrains/slows flexion of the index finger (finger number two)at the metacarpophalangeal and proximal and distal interphalangeal joints 
D) restrains/slows extension of the index finger (finger number two)at the metacarpophalangeal and proximal and distal interphalangeal joints

Question 7

What is the only muscle that can flex the distal phalanx of fingers two through five?

Accepted Answer

A) flexor digitorum superficialis 
B) flexor digitorum profundus 
C) flexor digitorum longus 
D) flexor digitorum brevis 
A) flexor digitorum superficialis 
B) flexor digitorum profundus 
C) flexor digitorum longus 
D) flexor digitorum brevis

Question 8

Which is an action of the extensor digitorum?

Accepted Answer

A) flexion of the hand at the wrist joint 
B) extension of the hand at the wrist joint 
C) flexion of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints 
D) elevation of the scapula at the scapulocostal joint 
A) flexion of the hand at the wrist joint 
B) extension of the hand at the wrist joint 
C) flexion of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints 
D) elevation of the scapula at the scapulocostal joint

Question 9

Which is an action of the flexor pollicis longus?

Accepted Answer

A) extension of the forearm at the elbow joint 
B) flexion of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
C) extension of the arm at the glenohumeral joint 
D) flexion of the arm at the glenohumeral joint 
A) extension of the forearm at the elbow joint 
B) flexion of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
C) extension of the arm at the glenohumeral joint 
D) flexion of the arm at the glenohumeral joint

Question 10

The extensor digiti minimi sometimes blends with what muscle?

Accepted Answer

A) extensor carpi radialis brevis 
B) brachioradialis 
C) flexor digitorum profundus 
D) extensor digitorum 
A) extensor carpi radialis brevis 
B) brachioradialis 
C) flexor digitorum profundus 
D) extensor digitorum

Question 11

Which are the attachments of the flexor digitorum superficialis?

Accepted Answer

A) medial epicondyle of the humerus (via the common flexor tendon)and the anterior ulna and radius to the anterior surfaces of fingers two through five 
B) lateral epicondyle of the humerus (via the common extensor tendon)and the posterior ulna and radius to the posterior surfaces of fingers two through five 
C) lateral supracondylar ridge of the humerus to the anterior surfaces of fingers two through five 
D) medial epicondyle of the humerus (via the common flexor tendon)and the lateral epicondyle of the humerus (via the common extensor tendon)to the anterior surfaces of fingers two through five 
A) medial epicondyle of the humerus (via the common flexor tendon)and the anterior ulna and radius to the anterior surfaces of fingers two through five 
B) lateral epicondyle of the humerus (via the common extensor tendon)and the posterior ulna and radius to the posterior surfaces of fingers two through five 
C) lateral supracondylar ridge of the humerus to the anterior surfaces of fingers two through five 
D) medial epicondyle of the humerus (via the common flexor tendon)and the lateral epicondyle of the humerus (via the common extensor tendon)to the anterior surfaces of fingers two through five

Question 12

The extensor digiti minimi attaches distally into a tendon of what muscle?

Accepted Answer

A) extensor digitorum 
B) extensor indicis 
C) extensor digitorum longus 
D) brachioradialis 
A) extensor digitorum 
B) extensor indicis 
C) extensor digitorum longus 
D) brachioradialis

Question 13

Which is an eccentric function of the extensor digitorum?

Accepted Answer

A) restrains/slows flexion of the hand at the wrist joint 
B) restrains/slows extension of the hand at the wrist joint 
C) restrains/slows extension of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints 
D) restrains/slows elevation of the scapula at the scapulocostal joint 
A) restrains/slows flexion of the hand at the wrist joint 
B) restrains/slows extension of the hand at the wrist joint 
C) restrains/slows extension of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints 
D) restrains/slows elevation of the scapula at the scapulocostal joint

Question 14

Which are the attachments of the extensor pollicis longus?

Accepted Answer

A) posterior ulna to the thumb 
B) lateral epicondyle of the humerus (via the common extensor tendon)to the thumb 
C) medial epicondyle of the humerus (via the common extensor tendon)to the thumb 
D) anterior ulna to the thumb 
A) posterior ulna to the thumb 
B) lateral epicondyle of the humerus (via the common extensor tendon)to the thumb 
C) medial epicondyle of the humerus (via the common extensor tendon)to the thumb 
D) anterior ulna to the thumb

Question 15

Which are the attachments of the flexor digitorum profundus?

Accepted Answer

A) anterior radius to the anterior surfaces of fingers two through five 
B) middle posterior tibia to the plantar surface of toes two through five 
C) medial and anterior ulna to the anterior surfaces of fingers two through five 
D) distal posterior fibula to the plantar surface of toes two through five 
A) anterior radius to the anterior surfaces of fingers two through five 
B) middle posterior tibia to the plantar surface of toes two through five 
C) medial and anterior ulna to the anterior surfaces of fingers two through five 
D) distal posterior fibula to the plantar surface of toes two through five

Question 16

Which are the attachments of the extensor digiti minimi?

Accepted Answer

A) lateral epicondyle of the humerus (via the common extensor tendon)to the phalanges of fingers two through five 
B) lateral epicondyle of the humerus (via the common extensor tendon)to the phalanx of the little finger (finger number five) 
C) medial epicondyle of the humerus (via the common extensor tendon)to the phalanx of the little finger (finger number five) 
D) dorsal surface of the calcaneus to the dorsal surface of the phalanx of the little toe (toe number five) 
A) lateral epicondyle of the humerus (via the common extensor tendon)to the phalanges of fingers two through five 
B) lateral epicondyle of the humerus (via the common extensor tendon)to the phalanx of the little finger (finger number five) 
C) medial epicondyle of the humerus (via the common extensor tendon)to the phalanx of the little finger (finger number five) 
D) dorsal surface of the calcaneus to the dorsal surface of the phalanx of the little toe (toe number five)

Question 17

The extensor digitorum communis is another name for what muscle?

Accepted Answer

A) extensor digitorum 
B) extensor digiti minimi 
C) extensor indicis 
D) flexor digitorum superficialis 
A) extensor digitorum 
B) extensor digiti minimi 
C) extensor indicis 
D) flexor digitorum superficialis

Question 18

Which are actions of the flexor digitorum profundus?

Accepted Answer

A) flexion of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints and extension of the hand at the wrist joint 
B) flexion of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints and flexion of the hand at the wrist joint 
C) extension of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints and flexion of the hand at the wrist joint 
D) flexion of the forearm at the elbow joint and flexion of the hand at the wrist joint 
A) flexion of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints and extension of the hand at the wrist joint 
B) flexion of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints and flexion of the hand at the wrist joint 
C) extension of fingers two through five at the metacarpophalangeal and proximal and distal interphalangeal joints and flexion of the hand at the wrist joint 
D) flexion of the forearm at the elbow joint and flexion of the hand at the wrist joint

Question 19

Which are the attachments of the flexor pollicis longus?

Accepted Answer

A) distal posterior fibula to the plantar surface of the big toe (toe number one) 
B) anterior surface of the radius to the thumb 
C) lateral epicondyle of the humerus (via the common flexor tendon)to the posterior surface of the thumb 
D) anterior surface of the ulna to the thumb 
A) distal posterior fibula to the plantar surface of the big toe (toe number one) 
B) anterior surface of the radius to the thumb 
C) lateral epicondyle of the humerus (via the common flexor tendon)to the posterior surface of the thumb 
D) anterior surface of the ulna to the thumb

Question 20

Which is an action of the flexor pollicis longus?

Accepted Answer

A) extension of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
B) extension of the hand at the wrist joint 
C) flexion of the hand at the wrist joint 
D) extension of the arm at the glenohumeral joint 
A) extension of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints 
B) extension of the hand at the wrist joint 
C) flexion of the hand at the wrist joint 
D) extension of the arm at the glenohumeral joint

What nerve innervates the flexor digitorum superficialis?

Which muscles attach onto the thumb?

Which is an action of the extensor pollicis longus?

Which is an action of the extensor digiti minimi?

Why do wrist extensor muscles contract when a person flexes his or her fingers to make a fist?

Which is an eccentric function of the extensor indicis?

What is the only muscle that can flex the distal phalanx of fingers two through five?

Which is an action of the extensor digitorum?

Which is an action of the flexor pollicis longus?

The extensor digiti minimi sometimes blends with what muscle?

Which are the attachments of the flexor digitorum superficialis?

The extensor digiti minimi attaches distally into a tendon of what muscle?

Which is an eccentric function of the extensor digitorum?

Which are the attachments of the extensor pollicis longus?

Which are the attachments of the flexor digitorum profundus?

Which are the attachments of the extensor digiti minimi?

The extensor digitorum communis is another name for what muscle?

Which are actions of the flexor digitorum profundus?

Which are the attachments of the flexor pollicis longus?

Which is an action of the flexor pollicis longus?

Basic Kinesiology Terminology

The Skeletal System

How Muscles Function

Muscles of the Shoulder Girdle Joints

Muscles of the Glenohumeral Joint

Muscles of the Elbow and Radioulnar Joints

Muscles of the Wrist Joint

Intrinsic Muscles of the Finger Joints

Muscles of the Spinal Joints

Muscles of the Rib Cage Joints

Muscles of the Temporomandibular Joints

Muscles of Facial Expression

Muscles of the Hip Joint

Muscles of the Knee Joint

Muscles of the Ankle and Subtalar Joints

Extrinsic Muscles of the Toe Joints

Intrinsic Muscles of the Toe Joints

Functional Groups of Muscles

Filters

Exam 8: Extrinsic Muscles of the Finger Joints

What nerve innervates the flexor digitorum superficialis?

Which muscles attach onto the thumb?

Which is an action of the extensor pollicis longus?

Which is an action of the extensor digiti minimi?

Why do wrist extensor muscles contract when a person flexes his or her fingers to make a fist?

Which is an eccentric function of the extensor indicis?

What is the only muscle that can flex the distal phalanx of fingers two through five?

Which is an action of the extensor digitorum?

Which is an action of the flexor pollicis longus?

The extensor digiti minimi sometimes blends with what muscle?

Which are the attachments of the flexor digitorum superficialis?

The extensor digiti minimi attaches distally into a tendon of what muscle?

Which is an eccentric function of the extensor digitorum?

Which are the attachments of the extensor pollicis longus?

Which are the attachments of the flexor digitorum profundus?

Which are the attachments of the extensor digiti minimi?

The extensor digitorum communis is another name for what muscle?

Which are actions of the flexor digitorum profundus?

Which are the attachments of the flexor pollicis longus?

Which is an action of the flexor pollicis longus?

Basic Kinesiology Terminology

The Skeletal System

How Muscles Function

Muscles of the Shoulder Girdle Joints

Muscles of the Glenohumeral Joint

Muscles of the Elbow and Radioulnar Joints

Muscles of the Wrist Joint

Intrinsic Muscles of the Finger Joints

Muscles of the Spinal Joints

Muscles of the Rib Cage Joints

Muscles of the Temporomandibular Joints

Muscles of Facial Expression

Muscles of the Hip Joint

Muscles of the Knee Joint

Muscles of the Ankle and Subtalar Joints

Extrinsic Muscles of the Toe Joints

Intrinsic Muscles of the Toe Joints

Functional Groups of Muscles

Filters