Integrative Week 1 Quiz

Question 1

Tricep

Answer 1

Insert - olecranon
Action - extends elbow
innervation - radial n.
- long head originates on cd. scapula and also flexes the shoulder
- lateral head originates on tricipital line (lateral humerus)
- accessory head originates on humeral neck
- medial head originates on crest of lesser tubercle (medial humerus)

Question 2

Quadriceps

Answer 2

Origin
- rectus femorus - ilium
- vasti muscles - proximal femur
Insertion - Tibial Tuberosity (tendon contains patella)
Action - extend stifle (RF also flexes hip)
Innervation - femoral n.

Question 3

Deltoid

Answer 3

Origin - scapula (spine and acromion)
Insertion - lateral humerus (deltoid tuberosity)
Action - Flex Shoulder
Innervation - Axillary n.

Question 4

Biceps Brachii

Answer 4

Origin - Supraglenoid tubercle
Insertion - Ulnar and Radial Tuberosities (medial)
Action - Flex Elbow
Innervation - Musculocutaneous n.

Question 5

Sartorius

Answer 5

Origin - Ilium of hip bone
(cr. crest of ilium
cd. cranioventral iliac spine and ventral ilium)
Insertion - cr. Patella w/ RF
cd. cranial tibia w/ gracillus
Action - flexes hip
Innervation - Femoral n.

Question 6

Biceps Femoris

Answer 6

origin - sacrotuberous ligament and ischiatic tuberosity
insertion - fascia lata, tubercalcanei
action - extend hip, stifle, hock (caudal part flexes stifle)
innervation - sciatic n.

Question 7

Gastrocnemius

Answer 7

origin - supracondylar tuberosities of femur (medial and lateral)
insertion - proximal tuber calcanei
action - extend hock, flex stifle
innervation - tibial n.

Question 8

Cranial Tibial

Answer 8

origin - extensor groove and lateral edge of tibia
insertion - plantar metatarsal I and II
action - flex tarsocrural joint, rotate paw laterally
Innervation - Fibular n.

Question 9

Iliopsoas

Answer 9

origin - psoas major (lumbar vertebra) and iliacus (cr.ventral ilium)
insertion - lesser trochanter (medial femur)
action - flex hip
innervation - femoral n. (and lumbar n. branches)

Question 10

Gracilis

Answer 10

origin - pelvic symphysis
insertion - cranial tibia and tuber calcanei
action - Adduct limb and flex stifle, extend hock and hip
innervation - obturator n.

Question 11

Pectineus

Answer 11

origin - pubis (prepubic tendon)
insertion - distal medial caudal femur
action - adduct limb
innervation - obturator n.

Question 12

Superficial Pectorals

Answer 12

origin - desc. 1st sternebra, tran. 1-3
insertion - greater tubercle (medial humerus)
action - Adduct limb (prevent abduction when bearing weight)
innervation - cranial pectoral (C7,8)

Question 13

Nerves of forelimb

Answer 13

radial n. (extends elbow)
musculocutaneous n. (flex elbow)
axillary n. (flex shoulder)

Question 14

Nerves of hindlimb

Answer 14

femoral n. (extends stifle, Flexes hip)
sciatic n. (extends hip, hock) 
tibial n. (extends hock, flex stifle)
Fibular n. (flex tarsocrural, rotate paw laterally)
obturator n. (adduct limb, extend hip)

Question 15

Deep pectoral

Answer 15

origin - ventral sternum
insertion - lesser tubercle, aponeurosis to gr. tubercle
action - pulls trunk cranially, flex shoulder and bring leg caudally when not weight bearing
innervation - caudal pectoral nerves (C8, T1)