In the horse, the third phalanx is also known as the:

The pigmented, muscular diaphragm that helps regulate the amount of light entering the pupil is called the:

Which of the following is the dental formula of the cat?

What is the name of this bone?  

Which of the following organs lacks pain receptors?

The outer layer of the spinal cord is composed of:

A cheek muscle that controls chewing is the:

The blood vessel that shunts blood from the pulmonary artery to the aorta in a fetus is called the:

The ________ is found on the surface of a calf’s placenta.

The ________ neuron, when stimulated by a depolarization wave, releases a neurotransmitter into the synapse.