Question

Horse:

is the olfactory area a large or small why?

is the cerebrum large or small why?

is the visual cortex large or small why?

is the cerebellum large or small why?

is the brain steam large or small why?

is the auditory cortex large or small why?

is the gustatory cortex large or small why?

Answer 1

1) The olfactory area in the horse is large because of the length of the nasal cavity. The mucosa of the nasal cavity of the horse bears the olfactory receptors which distinguish it from humans for a better smelling capacity.

2) The cerebrum is small because the overall brain size of the horse ranges from an inch to four inches in some breeds. On average the size ranges from around two to two and a half inches from birth to childhood.

3) The visual cortex of the horse is large because they have the largest eyes with laterally positioned orbits (one on each side of the head. This gives them the ability of 350-degree view out of which 65 degrees constitute binocular vision and 285-degree monocular vision.

4) The cerebellum of horse is larger because it gives the ability to horse to stand on all its four legs within an hour of birth making it move quickly compared to humans. The presence of large cerebellum allows it to remember the movements throughout its lifetime. One-third of the horse's brain consists of the Cerebellum which rules the motor/ sensory movement of the horse.