Question

Describe three characteristics of the mammalian brain that differ from other vertebrates.

a) Brain with a small cerebellum, three cerebral lobes, and a low level of intelligence.
b) Brain with a large cerebellum, two cerebral lobes, and high intelligence.
c) Brain with a large cerebrum, three cerebral lobes, and high intelligence.
d) Brain with a small cerebrum, two cerebral lobes, and low intelligence.

Answer 1

Mammalian brains have a large cerebrum with four primary lobes, a convoluted neocortex, and a corpus callosum that integrates functions.

Step-by-step explanation:

Mammalian brains have several characteristics that differentiate them from the brains of other vertebrates. First, mammals have a large cerebrum, with four primary lobes (frontal, temporal, occipital, and parietal). The cerebrum is responsible for functions like memory and learning. Second, the neocortex of mammalian brains is highly convoluted and folded, which increases the surface area and allows for greater mental abilities. Lastly, mammals have a specialized structure called the corpus callosum, which connects the left and right cerebral hemispheres and allows for integration of motor, sensory, and cognitive functions.