CAC Animal Anatomy and Biomechanics — Questions and Answers
Question 1: Which part of the spine is most commonly adjusted in veterinary chiropractic care?
- Cervical spine
- Thoracolumbar junction (Correct answer)
- Sacrum
- Coccygeal vertebrae
Correct answer: Thoracolumbar junction
The thoracolumbar junction is a key area for chiropractic adjustments due to its role in movement and stability in animals.
Question 2: What is the primary function of the sacroiliac joint in quadrupeds?
- Allows for rotational movement of the spine
- Transfers force from hind limbs to the spine (Correct answer)
- Supports weight evenly between front and back limbs
- Provides cushioning for the lumbar vertebrae
Correct answer: Transfers force from hind limbs to the spine
The sacroiliac joint transfers force from the hind limbs to the spine, playing a crucial role in movement and stability.
Question 3: Which of the following is a key biomechanical difference between dogs and horses?
- Horses have a passive stay mechanism for weight-bearing (Correct answer)
- Dogs have more vertebrae than horses
- Horses lack spinal flexibility
- Dogs use fewer muscles for running than horses
Correct answer: Horses have a passive stay mechanism for weight-bearing
Horses rely on passive stay mechanisms to support weight efficiently, while dogs primarily use active muscular engagement for movement.
Question 4: What is the function of the intervertebral discs in animal spines?
- Store energy for locomotion
- Cushion vertebrae and absorb shock (Correct answer)
- Strengthen muscle contractions
- Prevent joint movement
Correct answer: Cushion vertebrae and absorb shock
Intervertebral discs provide cushioning between vertebrae, absorbing shock and allowing for flexibility in movement.
Question 5: Which muscle group plays a key role in spinal stabilization during animal movement?
- Quadriceps
- Multifidus muscles (Correct answer)
- Latissimus dorsi
- Pectoral muscles
Correct answer: Multifidus muscles
The multifidus muscles help stabilize the spine and maintain posture during movement.
Question 6: How does the thoracic limb contribute to forward movement in quadrupeds?
- Generates primary forward thrust
- Acts as a stabilizer and shock absorber (Correct answer)
- Moves independently of the spine
- Carries more weight than the pelvic limb
Correct answer: Acts as a stabilizer and shock absorber
The thoracic limb acts as a stabilizer and shock absorber, providing balance and propulsion in quadrupedal locomotion.
CAC Animal Anatomy and Biomechanics
Which part of the spine is most commonly adjusted in veterinary chiropractic care?