CPA Animal Anatomy & Physiology 2

Question 1

Which type of muscle tissue is found in the walls of internal organs such as the stomach and intestines?

Accepted Answer

Smooth muscle

Answer

Smooth muscle is involuntary and lines the walls of hollow organs like the digestive tract.

Question 2

In livestock, the rumen is the first compartment of the stomach. What is its primary function?

Accepted Answer

Fermenting and breaking down plant fiber via microbes

Answer

The rumen houses microbial populations that ferment cellulose and other plant fibers through anaerobic digestion.

Question 3

What is the primary function of the lymphatic system in animals?

Accepted Answer

Returning excess interstitial fluid to the bloodstream and supporting immunity

Answer

The lymphatic system collects excess tissue fluid and returns it to circulation while also housing immune cells.

Question 4

Which bone is considered the largest and strongest bone in most large mammals?

Accepted Answer

Femur

Answer

The femur, or thigh bone, is the longest and strongest bone in most mammals including horses and cattle.

Question 5

In avian species, which organ replaces the diaphragm for respiratory function?

Accepted Answer

Air sacs

Answer

Birds lack a diaphragm and instead use a system of air sacs that create a unidirectional airflow through the lungs.

(CPA) Certified Petroleum Apprentice Practice Test