Muscles

Question 1

Skeletal

Answer 1

produces movement of the skeleton, long thin cells, stripped under microoscope (actin and myosin)

Question 2

organisation of the fibres (striated)

Answer 2

muscle fibres held together in small bundles called fasicles by connective tissue —– bundles keep getting held together with connective tissue until they form muscle

Question 3

unit of contraction in muscle

Answer 3

sarcomere

Question 4

energy for contraction

Answer 4

carbs, fat and proteins broken to get ATP

Question 5

Trapezius

Answer 5

origin: mid cervical and thoraci vertebrea
insertion: spine of the scapula
movement: abduction of the forelimb

Question 6

Brachiocephalicus

Answer 6

Origin: cervical region
Insertion: humerus
Movement: advances the forelimb

Question 7

Latissimus Dorsi

Answer 7

Origin: caudal thoracic and lumbar vertebrae
Insertion: Medial Humerus
movement: flexion of should and retraction of forelimb

Question 8

supraspinatus

Answer 8

Origin: Suporaspinous fossa
Insertion: Proximal tuberosities
Movement: Stabilises the shoulder

Question 9

Infraspinosus

Answer 9

Origin: infraspinous fossa
Insertion: Lateral tubercle of Humerus
Movement: Stabilises and abduction of the shoulder

Question 10

Triceps

Answer 10

Origin: Caudal border of the scapula and tricipital head of the humerus
Insertion: Olecranon
Movement: flex shoulder and extend elbow

Question 11

Biceps brachii

Answer 11

Origin: superglenoid
Inesrtion: Radial Tuberosity
Movement: Extends the shoulder and flexes the elbow

Question 12

Brachialis

Answer 12

Origin: Proximal caudal aspect of the humerus
insdertion: Radial tubercle
Movement: Flex the elbow