Study sets, textbooks, questions
Upgrade to remove ads
Palm of Hand
Terms in this set (47)
how many carpal, metacarpal and phalanges do you have?
8 carpals, 5 metacarpals and 14 phalanges (the thumb doesn't have a meddle phalanx)
what four bones does the flexor retinaculum bridge to form the carpal tunnel?
the pisiform and hook of the hamate medially, and the tubercle s of the scaphoid and trapezium laterally
is the thenar eminence medial or lateral?
lateral (base of thumb, think: athena likes a good thumb in her ass)
what fragile muscle will you find just deep to the hypothenar fascia?
the palmaris brevis muscle (runs from medial aspect of the palmar aponeurosis to the skin over the hypothenar eminence)
the tendon of which muscle forms the palmar aponeurosis?
the palmaris longus muscle (from the superficial flexors) note that even if the muscle isn't present, the palmar aponeurosis will still be there.
which artery primarily contributes to the superficial palmar arch?
the ulnar artery (superficial branch)... also gets a small contribution from the superficial palmar branch of the radial artery
what four bones does the flexor retinaculum bridge
the scaphoid, trapezium (laterally) and the pisiform and hamate hook medially.
Into what do the four bands of longitudinal fibers of the palmar aponeurosis attach at the fingers?
the fibrous digital sheath
Do the ulnar artery and nerve pass medial or lateral to the pisiform bone?
Off of the superficial palmar arch comes three common palmar digital arteries which divide into what to supply the adjacent sides of two digits?
each common palmar digital artery divides into two proper palmar digital arteries
the superficial branch of the ulnar nerve supplies cutaneous innervation to what digits?
digit five and the medial side of digit four
Name the contents of the carpel tunnel
median nerve, four tendons of the flexor digitorum superficialis muscle, four tendons of the flexor digitorum profundus muscle, and the tendon of the flexor pollicis longus muscle
what muscles are innervated by the recurrent branch of the median nerve?
the three thenar muscles () and lumbrical muscles 1 and 2
which digits are innervated by common palmar digital branches of the median nerve?
the lateral 3.5 (1,2,3 and the lateral half of 4)
of the flexor digitorum profundus and superficialis tendons, which attach to the distal phalynx and which attach to the middle phalynx?
the profundus tendons attach to the distal phalynx and the superficialis tendons attach to the middle phalynx.
what is the name for the synovial sheath of the tendon of the flexor pollicis longus muscle?
the radial bursa
Carpel tunnel syndrome impinges upon what nerve?
from what do the lumbrical muscles arise?
the tendons of the flexor digitorum profundus
name the insertion of the first and second lumbricals?
?the lateral surface of the extensor expansions of digits 2 and 3.
name the insertion of the 3rd and 4th lumbricals
the lateral sides of the extensor expansions of digits 4 and 5.
Name the innervation of the first and second lumbricals
median nerve (digital branches)
name the innervation of the 3rd and 4th lumbricals?
ulnar nerve (deep branch)
what is the name of the joint between the metacarpal bone and the first phalynx?
the MP joint (metacarpophalangeal joint)
What are the actions of the lumbrical muscles?
flex the digits at the MP joints and Extend at the IP joints
name the distal insertion of the tendon of the flexor pollicis longus muscle
the distal phalynx of the thumb.
what are the proximal attachments of the three thenar muscles?
flexor retinaculum and tubercle of the trapezium (abductor pollicis brevus also takes some origin from the tubercle of the scaphoid)
name the innervation of the three thenar muscles?
the recurrent branch of the median nerve (million dollar nerve)
Name the insertions of the thenar muscles
Abductor pollicis brevis to the lateral side of the proximal phalynx of the thumb, flexor pollicis brevis to the lateral side of the proximal phalynx of the thumb, and opponens pollicis to the lateral side of the entire shaft of the first metacarpal (thumb metacarpal).
will you find the recurrent branch of the median nerve superficial or deep to the flexor pollicis brevis muscle?
superficial (dives deep between it and the abductor pollicis brevis)
Name the three hypothenar muscles
abductor digiti minimi, flexor digiti minimi brevis, and opponenes digiti minimi
Name the proximal attachments of the hypothenar muscles?
the pisiform, hamate, and flexor retinaculum (abductor digiti minimi is the only one attaching to the pisiform, the other two attach to the hook of the hamate which makes sense becasue the hook of the hamate is slightly lateral)
Name the insertion of the abductor digiti minimi muscle
the medial side of the base of the proximal phalanx of digit 5
Name the insertion of the flexor digiti minimi brevis muscle?
the medial side of the base of the proximal phalynx of digit 5
Name the insertion of the opponens digiti minimi muscle
medial border of the fifth metacarpal bone
the deep branch of the ulnar nerve and deep palmar branch of the ulnar artery pass between the proximal attachments of what two muscles?
flexor digiti minimi brevis and abductor digiti minimi
what nerve pierces the opponens digiti minimi muscle?
the deep branch of the ulnar nerve
what nerve lies on the anterior surface of the interosseous muscles and then passes into the adductor pollicis muscle?
the deep branch of the ulnar nerve
name the two vessels that originate and complete the deep palmar arch
arises from the radial artery and is completed by the deep branch of the ulnar artery
Name the medial attachments of the transverse and oblique heads of the adductor pollicis muscle
transverse head attaches to the anterior surface of the shaft of metacarpal 3, while the oblique head attaches to the bases of metacarpal bones 2 and 3 and the adjacent carpel bones.
which lumbricals are bipennate?
3 and 4
are the palmar interosseus muscles bipennate or unipennate?
which digits have a palmar interosseus muscle?
medial side of 2, and the lateral side of 4 and 5
What is the distal insertion and action of the interosseous muscles?
Base of the proximal phalynx and extensor expansion of the same digit it arises from
Are the dorsal interosseous muscles unipennate or bipennate?
name the origins and distal insertions of the dorsal interosseous muscles
originate from metacarpals 1-5 and insert distally on the bases of the proximal phalanges and extensor expansions of 2-4.
How can you remember the actions of the palmar interosseus muscles vs the dorsal interosseous muscles?
PAD and DAB (palmar adduct 2,4,5 and dorsal abduct 2,3,4)
What nerve innervates all the interosseous muscles
deep branch of the ulnar nerve
Sets found in the same folder
Scapular region, brachial plexus, axilla
Extensor region of the forearm and dorsum of the h…
Cutaneous vv/nn of LL Gluteal region Lab 34
Sets with similar terms
Unit 3 Exam
Muscles of upper limb
Other sets by this creator
Other Quizlet sets
psych test 1
Brain Anatomy and Neurotransmitters
NURS 3220: Clinical Science Exam I
Who is Jesus Final