Anatomy of the Lower Limb Flashcards
what kind of joint is the shoulder
saddle
what is the shoulder joint called
sternoclavicular
what kind of joint is the elbow
hinge joint
which joints are pivot joints?
proximal radioulnar joint
distal radioulnar joint
name the only ball and socket joint of the arm
radiohumeral joint
name the only joint that keeps the upper limb attached to the body
sternoclavicular
name the only 2 muscles that supinate and pronate in the upper arm
biceps brachii
supinator
what angle can the thumb rotate to?
90 degrees
what digit corresponds to the 1st MCP joint
pinky
what would crossing of the radius over the humerus on an x ray indicate?
pronated hand
what is the thumb doing in abduction
moving away from fingers
what is the thumb doing in extension
thumbs up
innervation of trapezius
CNXI
innervation of serratus antrior
long thoracic nerve
innervation of rhomboid muscles
dorsal scapular nerve
what muscle group do the trapezius, serratus anterior and rhomboid major/minor muscles fall under?
axio-appendicular muscles
where is the levator scapulae located?
neck
name the 4 rotator cuff muscles?
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
easy way to remember the rotator cuff muscle attachments?
"SITS" as if holding on to the humerus S is index finger I is middle finger T is ring finger (all greater tub) S is thumb (lesser tub)
where do the rotator cuff muscles hold the humerus?
glenoid fossa
3 muscles of anterior compartment
biceps brachii
brachialis
coracobrachialis
innervation of anterior compartment of arm
musculocutaneous nerve
actions of the muscles of the anterior compartment of arm
flexion of arm and forearm
muscles of the posterior compartment of the arm?
triceps brachii
innervation of the triceps brachii
radial nerve
action of the triceps brachii
extension of arm and forearm
how to remember the muscles of the anterior compartment
BBC
biceps brachii
brachialis
coracobrachialis
name the 3 heads of the triceps
medial
lateral
long
how to remember the superficial muscles of the anterior compartment of the forearm
PFPF
place fingers over brachial region
name the superficial muscles of the anterior forearm
pronator teres
flexor carpi radialis
palmaris longus
flexor carpi ulnaris
innervation of the forearm
median nerve except flexor carpi ulnaris and medial half of flexor digitorum superficialis
muscles of the intermediate layer of the forearm
flexor digitorum superficialis
muscles of the deep layer of the forearm from lateral to medial
flexor pollicis longus
pronator quadrus
flexor digitorum profundus
which posterior muscle of the forearm is commonly referred to as the beer drinking muscle
brachioradialis
name the deep muscles of the forearm from proximal to distal
supinator adductor pollicis longus extensor pollicus longus extensor pollicis brevis extensor indicis
innervations of the deep portion of the forearm
radial nerve
what should you think of when pollicis is mentioned?
thumb
where is the thenar eminence found?
skin of thumb
where is the hypothenar eminence found?
skin under pinky
muscles of thenar eminence
abductor pollicis brevis
flexor pollicis brevis
opponens pollicis
innervation of thenar eminence
recurrent branch of median nerve
what is significant about the innervation of the thenar eminence?
it is affected by carpal tunnel syndrome
muscles of the hypothenar eminence
abductor digiti minimi
flexor digiti minimi brevis
opponens digiti minimi
innervation of the hypothenar eminence
deep branch of ulnar nerve
what action is commonly done using the lumbrical muscles?
waving to a child
easy way to remember the function of the 2 interossei muscles?
DAB PAD
dorsal interossei- abduction
palmar interossei- adduction
what innervates the lumbricals
median nerve
where does the brachial plexus originate?
anterior rami of C5-T1
where does the brachial plexus go?
axilla to medial arm
name the branching of nerves of the brachial plexus from proximal to distal
root trunks divisions cords nerves
good way to remember branching of nerves in the brachial plexus?
Really - root Tired - trunk Drink Coffee Now
name the 3 different trunks of the brachial plexus
superior
middle
inferior
what makes up the superior trunk of the brachial plexus
roots of C5 and C6
what makes up the middle trunk of the brachial plexus
root of C7 only
what makes up the inferior trunk of the brachial plexus
root of C8 and T1
what are the 2 different forms of divisions of the brachial plexus
anterior
posterior
what makes up the lateral cord of the brachial plexus
anterior cords divisions of the superior and middle trunks
what makes up the posterior cord of the brachial plexus
posterior divisions of the superior, middle and inferior trunks
what makes up the medial cord of the brachial plexus
anterior division of the inferior trunks
what cord makes up the ulnar nerve?
medial cord
what cords make up the median nerve
lateral and medial cord
what cords make up the radial nerve
posterior cord
what cords make up the axillary nerve
posterior cord
what cord makes up the musculocutaneous nerve
lateral
what is a dermatome
an area of skin supplied by a single spinal nerve
what digits are numb in carpal tunnel
1, 2, 3, lateral half of 4