The Human BodyThe Human BodyThe Human BodyThe Human BodyMelissa TaylorMelissa Taylor

ET 247ET 247PowerPoint ProjectPowerPoint Project

Did You Know? More than half the bones in the human body are in the

hands and feet? The highest recorded “sneeze speed” is 165 km (102

miles) per hour? The heart beats about 3 billion times in the average

persons lifetime? A newborn baby has 350 bones, but a fully-grown adult

has only 206? Blood is a liquid organ? Everyone is colorblind at birth? The surface area of the lungs is approximately the same

size as a tennis court? Food will get to your stomach even if you’re standing on

your head? Skin is the largest body organ? The average adult is mad up of 100 trillion cells?

MouthThe function of the mouth and its

associated structures: Form a receptacle for food Begin mechanical digestion through

chewing (mastication) Swallow food Form words in speech Assist respiratory system in the

passage of airwww.innerbody.com

The EarOrgan for hearing and

balance, it consists of three parts:

Outer Ear- collect and transmit sound

Middle Ear- collect and transmit sound

Inner Ear- analyzes sound waves and maintains the body’s balance

HeartThe heart is a pumping system which intakes

deoxygenated blood through the veins, delivering it to the lungs for oxygenation and then pumping it into the various arteries to be transmitted to where it is needed throughout the body for energy.

Facts about the heart: Size of a fist Nightmares can seem so real that the heart will

pound in fear Heart rate of a sleeper timed at 150 beats per

min. Medical dictionary states that the heart beats

more than 2.5 billion times in an average lifetime.

LungsAir in which is inhaled through the mouth and nasal passages travels through the windpipe or “trachea” into two main air passages

Respiratory system mainly contained in two lungs

Right lung make up of three compartments, which contain a branch and stem off into small “twigs” holding the air sacs that process the oxygen in the sir to be released into the blood and expel carbon dioxide which is exhaled through the nose and mouth

Left lung contains two sections and encloses the heart which processes the oxygenated blood into the lungs for exhalation

BrainThe brain is a jelly-like substance, which in adults

weighs about three pounds!

Divided into three parts:

Brain Stem- extension of spinal cord

Forebrain- consists mainly of cerebrum

Cerebellum

EsophagusMuscular tube which carries food and liquids from the throat to

the stomach for digestion after it has been chewed and chemically softened in the mouth.

Food is forced downwards by powerful waves of muscle contractions

Rings of muscle at the top and bottom that contract after food passes through and enters the stomach

StomachA hallow, sac-like organ connected to the esophagus and the

duodenum.

Several Functions: Consist of layers of muscle and nerves that continue the

breakdown of food which begins in the mouth Average adult stomach stretches to hold from 2-3 pints and

produces approximately the same amount of gastric juices every 24 hours

Storage bin Food mixer and strong muscles Sterilizing system Digestive tub