CCAT Canine Anatomy and Biomechanics 2

Question 1

Which carpal bone in dogs articulates directly with the radius to form the antebrachiocarpal joint?

Accepted Answer

Radial carpal bone

Answer

The radial carpal bone (equivalent to the scapholunar in humans) is the primary bone articulating with the distal radius at the antebrachiocarpal joint.

Question 2

The biceps brachii muscle in dogs primarily originates from which structure?

Accepted Answer

Supraglenoid tubercle of the scapula

Answer

The biceps brachii originates from the supraglenoid tubercle of the scapula and travels through the bicipital groove of the humerus.

Question 3

During the stance phase of canine gait, which muscle group is primarily responsible for preventing elbow flexion under load?

Accepted Answer

Triceps brachii group

Answer

The triceps brachii group (long, lateral, medial, and accessory heads) resists elbow flexion during weight-bearing stance phase.

Question 4

Which ligament connects the femoral head to the acetabular fossa and is important in hip joint stability?

Accepted Answer

Round ligament (ligament of the femoral head)

Answer

The round ligament (ligamentum capitis femoris) runs from the fovea capitis of the femoral head to the acetabular fossa, providing intracapsular hip stability.

Question 5

What is the primary role of the serratus ventralis muscle in canine forelimb biomechanics?

Accepted Answer

Suspend the thorax between the forelimbs

Answer

The serratus ventralis forms the muscular sling that suspends the thorax between the forelimbs, acting as the primary weight-bearing connection since dogs lack a clavicle.

CCAT Practice Test

CCAT Practice Test

CCAT Canine Anatomy and Biomechanics 2