The spleen is located in the upper left abdominal cavity, just beneath the diaphragm, and next to the stomach. It is similar to a lymph node in shape and structure but it is much larger.
An easy way to remember the anatomy of the spleen is the 1×3×5×7×9×11 rule. The spleen is 1" by 3" by 5", weighs approximately 7 oz, and lies between the 9th and 11th ribs on the left-hand side.
Your spleen is considered part of the lymphatic system.

the spleen consists of two types of tissue called white pulp and red pulp. The white pulp is lymphatic tissue consisting mainly of lymphocytes around arteries. The red pulp consists of sinuses filled with blood and lymphatic cells,

As blood is filtered through the spleen old and damaged red blood cells are removed from the blood. In addition, the spleen produces lymphocytes in response to invading pathogens found in the blood. The spleen is like a large lymph node that filters blood instead of lymph looking for invaders like harmful bacteria. White blood cells stored in the spleen help remove and eliminate these invaders. It is particularly helpful when fighting meningitis and pneumonia

The spleen also stores blood. The sinuses in the red pulp of the spleen are filled with blood and can be used in case of an emergency.

You can live without your spleen. your immune system won’t shut down without a spleen, but it won’t operate as efficiently.

Learn how to solve problems involving Boyle's law. Boyle's law states that as pressure increases then volume decreases and pressure decreases volume increases.
I use the Boyle's law formula Pressure x Volume = K
Example problem:
3.00 L of a gas is at 740.0 mmHg pressure. What is its volume at standard pressure?

A gas occupies 12.3 liters at a pressure of 40.0 mm Hg. What is the volume when the pressure is increased to 60.0 mm Hg?

In this video, I show you how to find the exact square root of a number using a factor tree.
A factor tree allows you to find the prime numbers of a number.
Once you know the prime numbers then you can easily find the square root.
In this video, I find the,
The square root 50
The square root of 9
The square root of 25
The square root of 12

Learn how to find the area of a sector which is similar to a pizza. The formula for finding the area of a sector equals the measure of the angle over 360 times pi radius squared.
m/360*πr2
The most common sector is a semi-circle which divides a circle in half.

Cenozoic EraIn this video I would like to talk about the Cenozoic era on the geologic time scale.
The Cenozoic era is the most recent era and is part of the Phanerozoic Eon along with the Paleozoic and Mesozoic eras.
The Cenozoic era lasted roughly 65 million years.
The Cenozoic era is most often described as the “ age of mammals” but could also be called the
“Age of flowering plants” or the age of insects.
Let’s hit several highlights of this era
Although the first mammals appear in the Mesozoic era they begin to thrive during the Cenozoic era and spread throughout the world.
Birds become more diverse and becoming more diverse.
In addition flowering plants also begin to thrive and spread to all corners of the Earth
Along with insects.
Apes and Humans also appear
During this era, the Earth is cooler and ice ages occur and the formation of glaciers.
In addition, the continents have moved into their modern location and several mountain ranges including the Alps, Himalayas, and the Rocky mountains

Have you ever wondered how you catch a cold? I discuss 5 ways microorganisms spread.
These include direct contact, indirect contact, airborne, oral route, insects and pests.

The first stage of mitosis called prophase

Hemophilia is an X-linked recessive disorder. The blood of a hemophiliac lacks the ability to clot, due to the fact that one or more of the plasma proteins required to form a clot is absent or reduced in their blood.
A recessive gene, it is carried on the female chromosome X . Males possess XY chromosomes and females XX. Since females have two X chromosomes, they are more often than not carriers.

If you look at the Punnett Square you can see the following.
Each child of a carrier will have a 50% chance of inheriting hemophilia. The daughter of a male haemophiliac will always inherit the disease, while a son cannot ever inherit it. A female will only be affected with haemophilia in the rare circumstance that she inherits mutated X chromosomes from both a hemophiliac father and a carrier mother. No case of such double inheritance is known among Queen Victoria's descendants.
Correction:
1:47 I made a mistake. The H in the lower right box should be lower case h and not a capital letter. H

Seahorses are really cool fish. They have a head that looks like a horse, a tail that wraps around objects and armour. Another really interesting fact is that the male gives birth.

Learn how to find the circumference of a circle along with the formula for radius and what diameter is.
You can use pi times diameter or 2pi radius squared

I use a factor tree and an LCM GCF chart to find the least common multiple of 9 and 15 along with the greatest common factor of 9 and 15