ANATOMY
9
31.
Regarding the origins of Triceps Brachii, all are true EXCEPT
a.
all are below the radial groove and deltoid ridge
pg 723 moore – origin long head infraglenoid tubercle of scapula, lateral head
posterior surface of humerus, superior to radial groove, medial head post
surface of humerus, inf to radial groove)
b.
it has a curved origin
who knows what this meant??
32.
Triceps
a.
blood supply is posterior interosseus artery
F - No. p723
b.
is supplied by the radial nerve
T
c.
only has two heads
F
d.
stabilises the shoulder in adduction
F - IN ABDUCTION
e.
often has it’s nerve supply compromised by humreal
shaft fractures
F - Not likely to paralyse triceps because nerves leave high
33.
Which pair supply Biceps femoris?
a.
Obturator and Tibial nerve
F
b.
Femoral and obturator nerve
F
c.
Tibial and common peroneal nerve
T - long head tibial n, short head common fibular nerve
Long head attaches to ischial tuberosity and short head attaches to
linea aspera and lateral supracondylar line and both go to lateral
tibial condyle via a tendon which is split into two by the
fibular collateral ligament
d.
Common peroneal and femoral nerve
F
e.
Tibial and femoral nerve
F
34.
Which one of the following statements regarding the
biceps muscle of the arm is correct – Pg 722 table 6.5
a.
the long head arises from the infraglenoid tubercle
F - from supraglenoid tubercle of scapula
b.
the short head arises from the acromian process
F - from coracoid process of scapula
c.
it is supplied by the musculocutaneous nerve
T - C5, C6
d.
it inserts into the bicipital tuberosity of the ulna
F - tuberosity of radius and fascia of forearm via bicepital aponeurosis
e.
it is a powerful pronator of the forearm
F - Supinates and flexes forearm
f.
the two heads merge in the upper arm
F
g.
is supplied by the median nerve
F - No musculocut nerve
h.
is a supinator of the forearm
T
i.
the short head arises from the acromion
F - No from tip of coracoid process of the scapula
j.
the long head arises from the greater tuberosity
of the humerus
F - No from supraglenoid tubercle of scapula
NOTE: Long head of biceps brachii runs over superior humerus under the
transverse humeral ligament and attaching to supraglenoid tubercle. Plays a
role in keeping humerus from moving superiorly, so query in abduction?
Couldn’t find this in textbook but asked Parko and that’s what he thought.
35.
Regarding brachialis; which is correct pg 722, 723 Moores
a.
innervated by the radial nerve
F – innervated by musculocutaneous nerve)
b.
inserts upper 1/3 of humerus
F – distal
½
of anterior humerus)
c.
inserts coronoid process of ulna
T - and tuberosity of ulna)
d.
arises from the upper third of the humerus
F - origin distal half of anterior of humerous
e.
inserts into the coronoid process and tuberosity of ulna T
f.
is supplied exclusively by the radial nerve
F - Musculocutaneous N
g.
is a powerful supinator of the forearm
F - flexes forearm
h.
adducts the arm
F
36.
Pronator teres
a.
Pure pronator
F - pronator of forearm and flexor of elbow joint pg 737 moore
proximal attachment medial epicondyle of humerus and coronoid process of
ulna to lateral surfaceof redius
b.
Attaches to maximal concavity of radius
F – attaches to radius most lateral point, which occurs approx in middle of its
curved body)
c.
Ulnar nerve goes between 2 heads
F – No between two heads of FCU
