Biomechanics of Superficial Muscles Flashcards
- Nasolabial levator
Enable elevation of lip and jaw. Shows dogs expression
- Orbicular ocular
Circular muscle the enables eyelid movement
- Zygomatic
Gives a ‘laughing’ look. Assists in mastication
- Frontal
Involved in ear movement
- Oral orbicular
Purses the lips
- Parotidoauricular
Involved with the ear and parotid gland
- Masseter
Enables mastication
- Buccinator
Pulls corners of mouth laterally. Pulls cheek against teeth
- Sternohyoid
Enables head to lower as well as drawing chest forward
- Sternocephalic
Flexes the head and neck. Allows rotation of the head
- Cleidocervical
Enables lateral neck movement and forward shoulder movement
- Cervical trapezius
Enabled elevation and forward movement of shoulder. Abducts forelimb
- Thoracic trapezius
Retracts shoulder
- Omotransverse
Advances the limb and flexes the neck laterally
- Cleidobrachial
Moves limb forward
- Deltoid
Raises elbow, flexes shoulder. Abducts shoulder
- Brachialis
Flexes the elbow
- Brachial triceps
Upper part of triceps allows shoulder flexion. Lower part of triceps allows elbow extension as also lock elbow
- Deep pectorial
Adducts foreleg. Allows rotation of leg
- Latissimus dorsi
Retraction causes forward movement of shoulder with flexion of shoulder
- External abdominal obliques
Contracts the abdomen, flexes the back, enables lateral movement of the trunk and assists in intake of oxygen. Assists in vomiting and elimination
- Internal abdominal obliques
Flexes trunk straight and laterally
- Sacrocaudal
Wagging the tail. Balance structure for the body
- Superficial gluteal
Enables hip rotation, extension and flexion. Forward movement
- Middle gluteal
Extends hip. Abducts limb
- Sartorial
flexes leg at knee (stifle)
- Tensor m. of fascia lata
Hip flexion and stifle extension
- Femoral biceps
Powerful extensor. Flexes stifle. Extends the thigh at the hip joint
- Semitendinous
Extends hip and elevates hock
