August 1996 Flashcards
(200 cards)
\External rotators of the shoulder:
a. Infraspinatus, teres minor, posterior deltoid
b. Subscapularis, teres major, latissimus dorsi
c. Pectoralis major, anterior deltoid, subscapularis
d. Trapezius, rhomboid, levator scapulae
Answer: A
Ratio:
Supraspinatus + deltoid-Abductors; superior humeral translation
Infraspinatus -ER ; depress the humerus
Teres minor-ER; depress the humerus
Subscapularis-IR; depress the humerus
Deltoids fibers:
Ant: flex & IR
Mid: ABd
Post: Ext & ER
Lats dorsi & teres major: EXADIR
Muscle that is not attached to the humerus:
a. Supraspinatus
b. Pectoralis major
c. pectoralis minor
d.teres major
Answer: C
supraspinatus: greater tuberosity of humerus
Pecs major: Pec Lat (lat lip of humerus)
Pecs Minor: coracoid process of scapula
Teres major: Meter (medial lip of bicipital groove of humerus)
The principal muscle involved in light hand closure is the:
a. Lumbrical
b. Flexor digitorum profundus
c. interossei
d. flexor digitorum superficialis
Answer: B
b. Flexor digitorum profundus: inserted in distal phlanx
d. flexor digitorum superficialis: inserted in middle phlanx
This blood vessel does not originate from the aortic arch:
a. Right common carotid artery
b. Left subclavian artery
C. Innominate artery
d. Left common carotid artery
Answer: A
ratio:
innominate artery is the same as brachiocephalic artery
In a third class lever:
a. None of these
b. The weight arm is longer than the force arm
C. The weight arm and force arm are equal
d. The force arm is longer than the weight arm
Answer: Answer: B
I: Fulcurm W=E
II:Weight E>W
III: Effort/force arm E<W
A muscle of facial expression:
a. Digastric
b. Temporalis
c. masseter
d. platysma
The ball of the foot corresponds to the:
a. Sole of the foot
b. Heads of metatarsals
c. base of metatarsal
d. calcaneus
The anconeus is responsible for:
a. Helping maintain elbow extension
b. Stabilizing the elbow joint during other movements of the upper extremity
c. All of these
d. Initiating extension of the elbow
Muscle innervated by the radial nerve:
a. Flexor carpi radialis
b. Flexor pollicis longus
c. Flexor digitorum superficialis
d. Abductor pollicis longus
Overlapping of receptive field improves this phenomenon of sensation:
a. Localization
b. Contrast
c. specific nerve energies
d. projection
The conoid and trapezoid are ligaments that connect the:
a. Clavicle and sternum
b. Acromion and clavicle
c. coracoids and humerus
d. coracoids and clavicle
In the process of rising up from the sitting position, the following muscles are active,
EXCEPT:
a. lliopsoas
b. Gastrocsoleus
c. gluteus maximus
d. quadriceps femoris
The trapezius and serratus anterior:
a. Act synergistically in abduction
b. Act as synergists in upward rotation and antagonists in retraction and protraction
c. Act as synergists in retraction and antagonists in upward and downward rotation
d. Act as synergists in upward rotation and antagonists in depression
In what movement of the scapula are the upper and lower trapezius muscles synergists:
a. Scapular retraction
b. Upward rotation
c. scapular protraction
d. scapular elevation
In a midclavicular fracture, the structure that protects the underlying vessels from being
injured is the:
a. Pectoralis minor
b. Subclavius
c. platysma
d. subclavian fat pad
The highest content of elastic fiber is found in the ligament:
a. Posterior longitudinal ligament
b. Ligamentum flavum
c. anterior longitudinal ligament
d. interspinous ligament
NOT an extrinsic muscle of the hand:
a. Extensor pollicis longus
b. Extensor digitorum
c. extensor carpi radialis
d. flexor digitorum superficialis
This does not describe the 7th rib:
a. Typical rib
b. Has two demifacets on its head
c. longest rib
d. most oblique rib
Stimulation of the vagus nerve may be expected to result in:
a. Decreased blood pressure and increased cardiac contractility
b. Vasodilatation and bradycardia
c. Vasodilatation and tachycardia
d. Vasoconstriction and increased heart rate
Bradycardia is heart beats less than:
a. 60 per minute
b. 80 per minute
c. 65 per minute
d. 72 per minute
The interaction between actin and myosin filaments during muscle contraction is brought
to a stop because of:
a. lonization of the cell
b. Depolarization of the cell membrane
c. Sodium pump reversal
d. Decrease concentration of intracellular calcium iond
A shunt muscle:
a. Is exemplified by the biceps and brachialis
b. Generate very little force c. Will usually have a long lever arm like the brachioradialis
d. Is chiefly rotatory in its effect on moving bone
A house painter who often works with raised arms as the hands work at a height should primarily be given strengthening exercises for the:
a. Middle deltoid
b. Serratus anterior
c. coracobrachialis
d. supraspinatus
Efferent fibers of the muscle spindle come from the:
a. All of these
b. Gamma motor neuron
c. alpha motor neuron
d. extrafusal muscle