Biomechanics of Superficial Muscles

Question 1

1. Nasolabial levator

Answer 1

Enable elevation of lip and jaw. Shows dogs expression

Question 2

2. Orbicular ocular

Answer 2

Circular muscle the enables eyelid movement

Question 3

3. Zygomatic

Answer 3

Gives a ‘laughing’ look. Assists in mastication

Question 4

4. Frontal

Answer 4

Involved in ear movement

Question 5

5. Oral orbicular

Answer 5

Purses the lips

Question 6

6. Parotidoauricular

Answer 6

Involved with the ear and parotid gland

Question 7

7. Masseter

Answer 7

Enables mastication

Question 8

8. Buccinator

Answer 8

Pulls corners of mouth laterally. Pulls cheek against teeth

Question 9

9. Sternohyoid

Answer 9

Enables head to lower as well as drawing chest forward

Question 10

10. Sternocephalic

Answer 10

Flexes the head and neck. Allows rotation of the head

Question 11

11. Cleidocervical

Answer 11

Enables lateral neck movement and forward shoulder movement

Question 12

12. Cervical trapezius

Answer 12

Enabled elevation and forward movement of shoulder. Abducts forelimb

Question 13

12. Thoracic trapezius

Answer 13

Retracts shoulder

Question 14

13. Omotransverse

Answer 14

Advances the limb and flexes the neck laterally

Question 15

15. Cleidobrachial

Answer 15

Moves limb forward

Question 16

16. Deltoid

Answer 16

Raises elbow, flexes shoulder. Abducts shoulder

Question 17

17. Brachialis

Answer 17

Flexes the elbow

Question 18

18. Brachial triceps

Answer 18

Upper part of triceps allows shoulder flexion. Lower part of triceps allows elbow extension as also lock elbow

Question 19

19. Deep pectorial

Answer 19

Adducts foreleg. Allows rotation of leg

Question 20

20. Latissimus dorsi

Answer 20

Retraction causes forward movement of shoulder with flexion of shoulder

Question 21

21. External abdominal obliques

Answer 21

Contracts the abdomen, flexes the back, enables lateral movement of the trunk and assists in intake of oxygen. Assists in vomiting and elimination

Question 22

22. Internal abdominal obliques

Answer 22

Flexes trunk straight and laterally

Question 23

23. Sacrocaudal

Answer 23

Wagging the tail. Balance structure for the body

Question 24

24. Superficial gluteal

Answer 24

Enables hip rotation, extension and flexion. Forward movement

Question 25

24. Middle gluteal

Answer 25

Extends hip. Abducts limb

Question 26

25. Sartorial

Answer 26

flexes leg at knee (stifle)

Question 27

26. Tensor m. of fascia lata

Answer 27

Hip flexion and stifle extension

Question 28

27. Femoral biceps

Answer 28

Powerful extensor. Flexes stifle. Extends the thigh at the hip joint

Question 29

28. Semitendinous

Answer 29

Extends hip and elevates hock