LCCW Regional Anatomy 1 - Midterm

__________ head of the triceps forms "roof" for passage of the radial n. as it spirals around the humeral shaft.

lateral

What is the A: of the subclavius m.?

"tracks" the clavicle around the SI joint

__________ m. I: = just LATERAL to biciptal groove.

pectoralis major

What n. pass the lateral arm on way to N: sensation to antero-lateral forearm?

musculocutaneous

deep radial n. passes underneath __________.

supinator

What 3 mm. make up the mobile wad of 3?

brachioradialis

extensor carpi radialis longus

extensor carpi radialis brevis

The long thoracic n. N: __________.

serratus anterior

__________ n. runs through the tunnel of "arcade" at the proximal attachment of flexor carpi ulnaris.

ulnar n

__________ has a proximal attachment @ supraglenoid tubercle (on scapula).

long head of biceps tendon

Scaption is defined as "scapular plan elevation" @ __________.

15 degrees anterior to body

__________ law: soft tissue is dynamic & changes in response to stresses placed upon it.

David's Law

__________ law: bone is dynamic & changes in response to stresses placed upon it.

Wolf's Law

Arising from tendons of flexor digitorum profundus __________ mm. superficially FLEX metacarpals.

lumbricales

Scaphoid, lunate, __________, pisiform.

triquetrium

Which wrist m. (carpi) actually inserts on carpal bones?

flexor carpi ulnaris

Thoracodorsal n. N: __________.

latissimus dorsi

The coracobrachialis O: from ________?

coracoid process

What n. comes from lateral & medial cord?

median n

What cord of BP becomes ulnar n?

medial cord

The ant'r deltoid O: on __________?

the clavicle

__________ m. I: on lesser tubercle of humerus.

subscapularis

Subcalvius a. & v. become axially a. & v. from the lateral clavicle to (ANTR) inferior aspect of pectoralis minor & (POSTR) __________.

inf'r border of teres major

__________ m. I: just MEDIAL to bicipital groove.

latissimus dorsi tendon

NOTE: just LATERAL = pectoralis major

What m. is the primary flexor of the elbow?

entire brachialis m.

__________ of the BP enters b/w ant'r and middle scalenes.

roots

__________ m. helps to raise the ribs when scapula is "fixed" on rib cage.

serratus ant'r

From SUP'R to INF'R in what order do these structures attach to greater tubercle (humerus)?

1) supraspinatus

2) infaspinatus

3) teres minor

What nn. N: anterolateral forearm?

musculocutaneous n & superficial radial n

Medial brachial & antebrachial cutaneous nn. travel __________ to ulnar n.

medial

What 3 mm. make up the "anatomical snuff box"?

1) ABductor pollicis longus

2) extensor pollicis longus

3) extensor pollicis brevis

__________ m. is the most superior m. w/ O: at supracondylar ridge.

brachioradialis

__________ n. N: deltoid & teres minor

axillary n

__________ n. is motor N: to the brachioradialis.

radial n

A: __________ = ABduct the metacarpals.

dorsal interossii

__________ tendon passes b/w adductor pollicis (webbing of thumb) & opponens pollicis (deep).

flexor pollicis longus (m. in ant'r forearm)

__________ carpal bone articulates w/ radius.

scaphoid *thumb side*

Triangular fibrocartilage is located on the __________ side of the wrist.

ulnar side

Where is opponens pollicis in relation to felxor retinaculum?

distal

The coracoid process is located on the __________.

scapula

The ant'r deltoid O: __________.

clavicle

Looking post'r to ant'r, which m. is the superior border of the triangular & quadrangular spaces?

teres minor

And looking ant'r to post'r - superior border is __________.

subscapularis

What m. is only present in 60% of patients?

palmaris longus

__________ & __________ nn. provide motor N: to flexor digitorum profundus.

median n (lateral 1/2) & ulnar n. (medial 1/2)

What structure forms the roof of the Guyon tunnel?

palmaris brevis

Volar plates are found @ __________.

palmar phalanges

What m. I: is the radial tuberosity?

biceps brachii by radial tendon

What m. is the major supinator of the forearm?

biceps brachii

Last bone to fuse? @ what age?

clavicle, 26

What 4 mm. make up the rotator cuff?

S - supraspinatus

I - infraspinatus

T - teres minor

S - subscapularis

Where do the 3 heads of the deltoid O:?

ant'r head - latr'l 1/3 of clavicle

middle & post'r head - spine of scapula

SUP'R/MED - INF'R/LATRL what 3 mm. O: at coracoid process?

1) pectoralis minor

2) coracobrachialis

3) short head of biceps brachii

What makes up external rotator cuff?

infraspinatus & teres minor

Which external rotator cuff m. is more active when arm is ABDUCTED to 90 degrees?

infraspinatus

**teres minor more active when arm is close to the body

Which of the 3 heads of triceps forms a roof over the radial n.? Which one crosses the shoulder?

roof - lateral head

crosses shoulder - long head

What is the function of palmar interossii?

ADDUCT metacarpals *phalanges along for the ride

What are the 4 distal metacarpals?

trapezium (connects to thumb)

trapezoid

capitate

hamate

What is the A: of subscapularis?

internal (medial) rotation

As media n. crosses elbow is pass through __________ m.

pronator teres

**mimics carpal tunnel

__________ & __________ mm. pronate the forearm.

pronator teres

pronator quadratu

__________ & __________ mm. supinate the forearm.

supinator

biceps brachii (the "great supinator")

O: long head biceps brachii = __________.

supraglenoid tubercle

O: long head triceps = __________.

infraglenoid tubercle

What n. N: moter & sensory to anconeus?

radial n

__________ n. = motor N: to (1) flexor carpi ulnaris (2) medial 1/2 of flexor digitorum profundus.

ulnar n.

2 words to associate w/ Sherrington's Law:

reciprocal inhibition

N: subscapularis = __________.

subscapularis n

N: subcalvius = __________.

subclavius n.

N: pectoralis minor = __________.

medial pectoral n.

N: pectoralis major = __________.

medial & lateral pectoralis n.

Main motor N: of radial n:

triceps brachii

anconeus

brachioradialis

extensor carpi radialis longus

**THINK EXTENSOR

Superficial motor N: of median n:

pronator teres

flexor carpi radialis

palmaris longus

**THINK FLEXOR

The proximal attachment of the long head of biceps tendon is the __________.

supraglenoid tubercle

What is the chiropractor's m.?

anconeus