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WorksheetsHK - Anterior Forearm & Hand
Total questions: 38
Worksheet time: 50mins
IMPORTANT FOR THE PRACTICAL! We typically need to reflect (a) and trace the median nerve distally to view the anterior interosseous (AI) nerve – which muscle needs to be reflected?
A) Carpal tunnel is a space that exists under/over the flexor retinaculum (type the right answer)
B) As the median nerve exits the carpal tunnel, it immediately gives a VERY SUPERFICIAL branch that travels backwards called the (a) - this is IMPORTANT FOR THE PRACTICAL!
A) Palmaris longus inserts on the (a) , a set of dense, triangular-shaped fascia located superficially immediately deep to the skin.
B) The ulnar nerve travels superficial/deep to palmaris brevis (Type 'deep' or 'superficial')
The superficial branch of the ulnar nerve ends cutaneously and carries cutaneous sensation back from the _____ digits in most individuals.
medial 1 ½ (one and a half) digits
lateral 1 ½ (one and a half) digits
medial 3 ½ (three and a half) digits
lateral 3 ½ (three and a half) digits
A) The ULNAR NERVE travels distally in the anterior compartment of the forearm deep to which muscle?
B) After piercing the hypothenar eminence, the deep branch of the ulnar nerve reappears on the deep (coconut) palm innervating the interosseus muscles and disappearing into (a) .
A) The (a) innervates adductor pollicis and creeps (b) the muscle to innervate it.
B) The recurrent branch of the median nerve is located (c)
Where do the lumbrical muscles originate and insert? Please be as specific as you can. Also name their innervation and action...
Where do the interosseous muscles originate and insert? Please be as specific as you can. Also name their innervation and all actions...
A) The (a) nerve exists between flexor digitorum profundus and flexor digitorum superficialis. In lab, it can sometimes be stuck on flexor digitorum superficialis as it sits deep to it.
B) Lumbrical muscles are located on the ulnar/radial/medial/lateral/thumb/pinky side of the long flexor tendons
Do not type the word 'nerve' for and choose only ONE word of the 6 for B (multiple correct answers will be accepted, but do not type multiple words)
Categorize the following muscles in the anterior forearm to their innervation. Note that the anterior interosseus (AI) nerve is a branch of the median nerve.
Pronator Teres
Flexor Carpi Radialis
Flexor Carpi Ulnaris
Pronator Quadratus
Medial half of flexor digitorum profundus
Lateral half of flexor digitorum profundus
Flexor Pollicis Longus
Palmaris Longus
Flexor Digitorum Superficialis
Name the 4 actions of the carpi muscles / "corner muscles". You may use the same anatomical action term more than once if you are referring to a different action (i.e., abduction)
Hint: Two of these actions are specific to these muscles & one is an action shared by all superficial anterior forearm muscles.
Categorize the following muscles by their depth
Flexor Digitorum Superficialis
Flexor Digitorum Profundus
Flexor Carpi Radialis
Flexor Carpi Ulnaris
Pronator Teres
Palmaris Longus
Pronator Quadratus
Flexor Pollicis Longus
Categorize the following muscles in the hand by their depth
Flexor Digitorum Profundus
Palmaris Longus
Flexor Pollicis Longus
Flexor Digitorum Superficialis
Lumbrical muscles
Thenar Eminence
Hypothenar Eminence
Adductor Pollicis
Dorsal Interosseous Muscles
Palmar Interosseous Muscles
Palmaris Brevis
Categorize the following muscles in the hand by their innervation/where they carry cutaneous (sensory) sensation from
Lumbrical of digit 2
Thenar Eminence
Hypothenar Eminence
Adductor Pollicis
Dorsal Interosseous Muscles
Palmaris Brevis
Lumbrical of digit 3
Lumbrical of digit 5
Lumbrical of digit 4
Palmar interosseus muscles
Sensory information from the medial 1½ digits
Sensory information from the lateral 3½ digits
All the superficial & intermediate group of muscles within the anterior forearm originate at the common flexor origin / medial epicondyle of humerus. Match the following muscles to their distal attachment (insertion).
Base of the second metacarpal bone
Flexor carpi radialis
Palmar aponeurosis
Palmaris longus
Middle third of the radius
Pronator Teres
Middle phalanges of digits 2-5
Flexor digitorum superficialis
Base of the fifth metacarpal bone
Flexor carpi ulnaris
A) True or false? Palmaris longus has a bony distal attachment (insertion).
B) Does palmaris longus travel over or under the flexor retinaculum?
True, over
True, under
False, over
False, under
A) True or false? Flexor digitorum profundus attaches proximally to the common flexor origin (medial epicondyle of the humerus).
B) If we were to put our hands in anatomical position with palms forward, the metacarpals are numbered from _____ to _____
True, medial to lateral
False, medial to lateral
True, lateral to medial
False, lateral to medial
Within the deep group of anterior forearm muscles exists flexor digitorum profundus and flexor pollicis longus, which both contribute to flexion at every joint proximal to their insertion. Name the origin and insertion of both muscles and be specific!
(a)
Flexor carpi ulnaris & radialis contribute to abduction/adduction at the _____. Flexor carpi ulnaris contributes to _____ while flexor carpi radialis contributes to _____.
elbow, abduction, adduction
elbow, adduction, abduction
wrist, abduction, adduction
wrist, adduction, abduction
All of the muscles of the anterior forearm are innervated by the _____ nerve except half of ______ and ____, which are innervated by the _____ nerve
Don't type the word 'nerve', just the name will suffice.
(a)
Which of the following joints does flexor digitorum superficialis NOT contribute to flexion of?
Distal interphalangeal joints
Proximal interphalangeal joints
Elbow joint
Metacarpophalangeal joints
Wrist joint
A) Between the ulna and radius exists the (a) membrane
B) True or false? Adductor pollicis exists deep to the long flexor tendons and superficial to the lumbrical muscles.
You can type just 'T' or 'F' if you would like.
Mark the boundaries of the cubital fossa. Recall that the roof is made of skin & _____ fascia - is it deep or superficial? Answer this part of the question in your head and check the answer explanation to see if you are correct!
Medial epicondyle of the humerus
Lateral epicondyle of the humerus
Pronator Teres
Brachioradialis
Supinator muscle
Brachialis
The carpal tunnel contains which of the following muscles?
Flexor pollicis longus
Flexor digitorum profundus
Flexor carpi ulnaris
Which of the following structures DO NOT travel through the cubital fossa?
Bifurcation of the brachial artery
Tendon of biceps brachii
Ulnar nerve
Median nerve
______, a muscle in the deep group of the anterior forearm originates on the _____ & inserts on the _____. Its sole action is to pronate the forearm. When typing the name of this muscle, type the FULL name.
(a)
The _____ nerve innervates the deep distal muscles of the anterior forearm and is a branch of the _____ nerve.
Type the full name of the nerve WITHOUT typing the word 'nerve'.
(a)
The (a) is a band distal on the upper limb that spans from the medial carpal bones to the lateral carpal bones.
The ______ is made up of the flexor retinaculum and the carpal bones; its syndrome is due to pinching of / pressure on the _____ nerve that it contains within it.
(a)
The median nerve travels _____ the retinaculum and the ulnar nerve travels _____ the retinaculum. The tendons of flexor digitorum superficialis & flexor digitorum profundus travel _____ to the flexor retinaculum to make their way to the palm and eventually their distal attachments.
over/superficial to, under/deep to, over/superficial to
under/deep to, over/superficial to, over/superficial to
over/superficial to, under/deep to, under/deep to
under/deep to, over/superficial to, under/deep to
A) The anterior interosseus nerve of the median nerve appears _____ the median nerve travels distally under the retinaculum.
B) In anatomical position, supinator is oriented _____ whereas in pronated position, it is oriented _____
before, linearly, diagonally
after, diagonally, linear
after, linearly, diagonally
before, diagonally, linear
A) Supinator is innervated by the (a) .
B) The (b) exists on the anterior surface of flexor digitorum profundus and deep to flexor carpi ulnaris.
C) The (c) cruises along the deep aspect of the hand.
Brachioradialis is an _____ on the forearm and innervated by the _____ nerve.
extensor; median
flexor; median
extensor; radial
The only muscle innervated by the superficial branch of the ulnar nerve is (a) , which supplies motor innervation to this muscle despite being mainly cutaneous.
Which of the following nerves innervate the three muscles associated with the thenar eminence (flexor pollicis brevis, abductor pollicis brevis, & opponens pollicis brevis)?
Superficial branch of the ulnar nerve
Deep branch of the ulnar nerve
Recurrent branch of the median nerve
Median nerve
Anterior interosseus nerve
The _ dorsal and _ palmar ______ muscles help in abduction & adduction of the digits - dorsal with __duction and palmar with __duction.
(Just type type ab or ad, not the full word)
(a)
The three muscles of the hypothenar eminence are the flexor, abductor, and opponens _____. They are associated with digit _ (type the number only). The three muscles of the thenar eminence are the flexor, abductor, and opponens _____. They are associated with digit _ (type the number only).
(a)
How does the radial nerve get to the posterior arm to innervate extensors of the forearm? I.e., how does the radial nerve travel to the posterior forearm?
(a)
