homo aquaticus essay

We. Introduction

If the human brain is definitely compared with the brains of apes there are numerous

obvious distinctions, the centers for the sense of smell and foot control are

larger in apes than in individuals, but the centers for palm control, air passage control

vocalization, language and thought will be larger in humans. Within my paper, Let me

describe one of the most defined dissimilarities of brain size and centers among humans

and the closest family, chimpanzees, to compare them with other mammals and

to draw conclusions about the evolution good humans.

II. Mind Evolution

Human beings and chimpanzees are biochemically (DNA) and thus probably

phylogenetically (evolution relationships), more as well than chimps and gorillas.

But the minds of chimps and individuals differ in size and anatomy more than

gorillas and chimps. The minds of chimps and gorillas probably couldnt go

through many evolutionary innovations, because they generally look like other ape

and goof brains. It indicates that the human brain changed a whole lot after the

human/chimp evolution. Except for the olferactory bulb (scent), all

mind structures happen to be larger in humans than in apes. The neocortex (part of the

cerebral cortex), as an example is over 3 times larger than in chimps, even

though chimps and humans are very close to equal in body weight.

Each side from the brain is diveded by the central sulces in independant

halves. Just before the central sulcus lies the post-central cortex, where the

reverse body 50 percent (right area for remaining brain, left side for right brain). Simply

in front of the central sulcus lies the pre-central cortex in which the information

intended for the non-reflex movements keep tthe head. The pre-central area is named

primary motor unit cortex, and also Area 5 in primates.

III. Human and Chimp Cortex Differences

In humans Location 4 is almost twice as significant as it is in chimpanzees. The

part of Area 4 that commands the movement from the leg, ft . and feet is small

in human beings than apes. This leaves more area for the part that regulates the hand

fingers and thumb. A whole lot larger is the reduce part of human Area four, related to

your mouth and brething and singing cords. The post central cortex is enlarged the

same as Area 4.

Before the primate Location 4 sit the cortex areas (pre-motor) that inform

Area four what to do. Before the enlarged part of human Place 4 is definitely the Area of

Broca, the motor-speech center which in turn controls inhaling and exhaling muscles. Over Area

Broca is Wernickes Area, the speech middle, a exclusively human brain middle along

with Area of Taladro. Wernickes Location has direct connections to Brocas Place

through arcuate fasciculus, a neural pathway that apes dont have anywhere in

their human brain.

The major difference between the man and cavy cortexs is a enlargement

in the hand and mouth incorporation areas. These areas occupy a large area of the

human brain. Inside the motor half of the cerebral cortex, enlarged areas are in

the pre-motor area and Brocas Place. In the sensory half, the enlarged ares are

Wernickes Area and the visual area as well as the auditory cortex.

IV. Details

Many scientists believe that the differences between human being and ape

brains will be shown through mans capacity to use tools and vocabulary. This

classic view are not able to explain for what reason only human being ancestors created these engine

skills and language talents, that is, so why nonhuman primates and other savannah

mammals couldnt develop these abilities.

The perfect solution is may rest in the aquatic theory of human advancement, the theory

that explains how come humans dont have fur, and why we now have excess fat, and many

other man features. (4) There are indications that the early hominoids

(ancestors to man and ape) lived in mangrove or photo gallery forests(5), where they

adapted to a patterns like proboscis monkeys, climbing and clinging in mangrove

trees, sorting into normal water and going swimming on the area. In my opinion individual

ancestors, divided from chimpazees and other apes and, instead of staying in

jungles like chimps, progressed using their water abilities, like diving and

collecting seaweed, then simply adapted to waders in shallow water and finally to

bipedal walkers on land.

The fact that human olfactory bulbs are just 44% with the chimpanzee light

is certainly not compatible with Africa savanah life. All savanah animals have got a good

olfaction. But an marine evolutionary phase would clarify why human beings have a

poor scent act of smelling. Water animals typically have a lower or even non-

existent sense of smell. (4)

The human Area some for the legs, toes and toes and fingers are