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The human body

By yahvi johri
by

Mr. Stack

on 10 June 2018

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Transcript of The human body

THE HUMAN EYES
Definition
The human eyes are the organs of vision and light sensitivity. They are the pair of organs you use to see with.

Layering Of the Eye
In the middle of the eye there is a black pupil. Then there is the iris which surrounds the pupil. Next there is the cornea which is a thin line at the edge of the iris. At the back of the pupil there is a lens. The white part of your eye is called the scelra. At the back side of the eye there is the retina, macula, fovea, choroid and the vitreous. The eye socket and nerve which connect the eye to the skull is called the optic nerve.
Facts about the Eye
Only 1/6 of the human eyeball is exposed
The human eye is about an ounce in weight and about an inch long
Eyes began to develop over 550 million years ago. The simplest eyes were patches of photo-receptor proteins in an animal which had a single cell.
The cells in your eye come in different shapes. Rod-shaped cells allow you to see shapes, and cone-shaped cells allow you to see color.
The Human Heart
Definition
The human heart is the organ which pumps blood throughout the body via, the circulatory system, supplies oxygen, nutrients the tissues, also removes carbon dioxide and other wastes.
Chambers of the Heart
There are 4 chambers in the heart, 2 atria chambers and 2 ventricle chambers. This is how the heart's chambers process oxygen/blood and make it rich. The right atria receives poor oxygen and blood from the body to pump to the right ventricle. When, the right ventricle receives the poor oxygen and blood, it passes it onto the lungs. The lungs then purify it, and pumps it onto the left atria. Then, the left atria gets it and pumps it to the left ventricle. Finally, the left ventricle pumps the rich oxygen and blood back into the body.
Facts About the Heart
The heart is located in between your lungs. 2/3 of your heart is on the left side and 1/3 on your right
The thumping sound in your heart is made by the 4 chambers closing.
Your heart pumps about 100 gallons of blood in an hour
Human Kidneys
Definition
The kidneys are the organs that remove waste products from blood,produce urine, makes substances which help control blood pressure, and control the formation of blood cells.
Process of Removing Waste
One of the pairs of kidneys are located at the right and left side of the abdomen. As blood flows through the kidneys, they remove all waste products, chemicals, and unneeded water from the blood. The middle of each kidney is where the urine collects, which is made from all unneeded things in the blood. The middle of the kidney is called the renal pelvis. After the urine collects it travels through a pipe called the ureter, to the bladder. In the bladder the urine is stored until elimination.
Facts About the Kidney
The blood flow in the kidney is higher than the blood flow in the heart, liver, and brain
Kidneys are 4.5 inches long and weigh 2-6 ounces each
High BP and Diabetes can both lead to kidney failure
In a single hour, the kidneys receive over 120 pints of blood
Human Lungs
Definition
The pair of bag-like organs that cleanse the blood and oxygen of carbon dioxide and passes it onto the left atria.
The lungs is located on either side of chest and protect the heart.
Human Lung Anatomy
The lungs are not identical because the right lung has 3 lobes and the left lobe has 2. The right lung has the Superior lobe, Middle lobe, and the Inferior lobe. The left lung has the superior lobe and inferior lobe. At right lung, in between the Superior lobe and Middle lobe is the Horizontal fissure and between the Middle lobe and Inferior lobe is the Oblique fissure. In the left lung, in between the Superior and Middle lobe is the Oblique fissure. There is also a Cardiac Notch and that is where the heart goes. There is also trachea which that is connected to both lungs and allows oxygen to go in the lungs.
Human Pancreas
Definition
A gland near your stomach that makes a fluid which helps digest food. It also makes insulin, which is a hormone that helps use glucose.
Functions and Anatomy of the Pancreas
The pancreas converts the food that we eat into fuel for our body cells. The pancreas has 4 parts, the long thin end is called the tail and the opposite side id called the head. In the middle is the neck and body. A lot of blood vessels surround the pancreas, they help to supply blood for the pancreas and other organs in the abdomen. The pancreas is located at the upper left side of the abdomen.
Human Spleen
Definition
An organ in the abdomen that is involved in making and removing blood cells in some vertebrates and part of the immune system.
Anatomy and Functions of the Spleen
The spleen is located in the far upper left part of the abdomen. It is purple and is about 4 inches long. Since the spleen is protected by the rib cage it is abnormal to be able to feel it. The spleen takes the role of a filter for blood as part of the immune system. Old blood cells are recycled there and white blood cells are stored there. The spleen also helps to fight certain bacterias which can cause diseases such as pneumonia and meningitis.
Blood vessels which allow cells to enter the spleen
The Brain
Human Liver
Definition
The organ that cleans the blood and produces bile, which helps to digest food
Functions and Anatomy of Liver
The liver helps to break down food, clean blood, make proteins for the body, and store energy. The liver also produces bile which is then processed in to the small intestine to digest fat. At the anterior side of the liver there is the right lobe and left lobe, in the middle of both of them is the falciform ligament and dangling from that is the round ligament. At the inferior side there is the inferior vena cava in the right lobe, the gallbladder which is attached to the hepatic portal vein, proper hepatic artery, and the common hepatic duct.
The Skin
Definition
The thin layer of tissue forming the outer covering of a person
Layering of the Skin
The skin has 3 layers. There is the epidermis the outer most layer which provides a water proof barrier and a skin tone, the dermis is the middle layer that contains tough connective tissue, hair follicles, and sweat glands, also the hypodermis (Subcutaneous Fat) which is a connective tissue.
Things to know
The human skin can basically cover a twin bed
The skin color is created by certain cells, called melanocytes. These cells produce the skin tone and are located in the epidermis.
Skin is about 15% of your total body weight
The Stomach
Definition
The internal organ in which the main part of digestion occurs
Large and Small Intestine
The large intestine helps to absorb the water from the remaining un-digestable food matter and process it to the bladder. The small intestine is where 90% of the digestion and absorption takes place in the stomach. It helps to digest and absorb food, also the raised tissues on the small intestine help to absorb calories and nutrients from food.
The Thyroid
Definition
A large ductless gland in the neck that secretes hormones improving growth and development through the rate of metabolism.
Functions of the Thyroid
The thyroid helps to create hormones. It makes these hormones by using the iodine from food. It makes two types of hormones thyroxine and triodothyrinin. These hormones are stored in the thyroid and are released when the body is growing.
Thyroid
Cardiac Notch
The Bladder
Definition
The organ where urine is stored before it is eliminated
The urine is made in the kidneys which is then brought by the ureter to the bladder and stored until elimination. During the process of urination the bladder's muscles contract which allow the urine to come out of the body
The Human Body Organs
By: Yahvi Johri
I hope you liked it
I have now understood how the human body organs work.

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