Respiratory System

Respiratory System

The respiratory system supplies oxygen and must work at steady pace to prevent death! The respiratory system has numerous parts such as the nose,pharynx,larynx ,trachea and lungs to name a few.

Nasal

Air enters through the nostrils. Our noses also have nasal cavities which are 2 hollow spaces. When air goes through the nasal cavities, that air becomes warm, filtered & moistened. 

Sinus Cavity

   

Our sinus cavity is by the nasal cavity. 

The sinus cavity provides a lot of things such as warming and softens air and gives us our voice.









The medical term for throat is pharynx. Our pharynx has 3 sections and they are...... the Nasopharynx (upper portion) , the Oropharynx (middle part) and the Laryngopharynx (bottom part).

How are we able to speak?? We can't just tell ourselves to talk. We have a voice box or larynx.
We have vocal cords... whenever the lungs release air our vocal cords vibrate and make sounds. Your tongue and lips help your speech.

Breathing is involuntary because you can control your breathing rate.. Fast/Slow 
There are 2 stages of respiration...
External Respiration & Internal Respiration
Oxygen and your respiration system work together.

Circulatory System

Tired of reading boring blogs????...well here's another boring blog! You will thank me some day for this! :-):-):-)

The circulatory system can be known as the Cardiovascular system. CVS is referred to as the "transportation" system of the body. The CVS includes of the heart, blood vessels and blood.

• Transports oxygen and nutrients to the body cells

Transports carbon dioxide and metabolic materials away from the body cells.

                                                    The Heart

• Muscular
•  Hollow Organ
•  Pump of the body.
• The size of a closed fist
• located in the mediastinal cavity (between the lings,behind the sternum and above the diaphargm)

Did you know your heart has THREE LAYERS ???ENDOCARDIUM, MYOCARDIUM, PERICARDIUM.

Endocardium: Smooth Layer, cells that line the inside of the heart and is continuous with the inside of blood vessels.

Myocardium: The THICKEST Layer and the muscular layer.

Pericardium: a double-layered membrane or sac, that covers the outside of the heart.

What is a septum??

A septum is a muscular wall that separates the heart into a right side and left side.

Your septum prevents blood from moving between the right and left sides of the heart. The upper part of the septum is the interatrial septum, and the lower part is the interventricular septum.



Four Heart Chambers



The heart is divided into 4 parts or chambers!!

2 upper chambers are called Atria. 2 lower chambers are called Ventricles.

How do these chambers work???



Well the right atrium recieves blood as it returns from the body cells.

 The right ventricle gets  blood from the right atrium and pumps the blood into the pulmonary artery, which carries the blood to the lungs for oxygen.

The left atrium gets oxygen generated blood from the lungs.

The left ventricle gets blood from the left atrium and pumps the blood into the aorta for transport to the body cells.



One Way valves in the chambers of the heart keep the blood flowing in the right direction. The triscupid valve is located between the right atrium and the right ventricle. It closes when the right ventricle contracts,allowing blood to flow to the lungs and preventing blood from flowing back into the right atrium.

The Pulmonary valve is a blood vessel that carries blood to the lungs. IT closes when the right ventricle finishes contracting, preventing blood from flowing back into the right ventricle.

The mitral valve closes when the left ventricle is contracting, allowing blood to flow into the aorta and preventing blood from flowing back into the left atrium.

Our bodies have 3 main types of blood vessels

1. Arteries CARRY BLOOD AWAY FROM THE HEART
2. Capillaries CONNECT THE ARTERIOLES W/ VENULES..SMALLEST VEINS
3. Veins CARRY BLOOD BACK TO HEART

Our bodies also have 3 main kinds of blood cells

1. ERYTHROCYTES - RED BLOOD CELLS
2. HEMOGLOBINS- COMPLEX PROTEIN
3. LEUKOCYTES - WHITE BLOOD CELLS

Body Planes, Directions and Cavities

What is a Body Plane??

Body planes are imaginary lines drawn through

the body at various parts to seperate the body

 into sections. There are 3 main body planes:

transverse, midsagittal and frontal.

Transverse Plane

A horizontal plane that div|ides the body into a top & bottom half.
Body parts can be all over the place! The body parts that are above other parts are called Superior. Body parts below other parts are Inferior.

Midsagittal Plane

Always remember the midsagittal plane/ median plane divides the body into left & rightsides!!! There are alot of body parts but the ones that are close to the midline, are known as the Medial. Body parts aren't always close to the midline, they can be away from the midline,which would be called Lateral.

Frontal/Coronal Plane        

Front & Back are the two main words you need to remember when trying to figure out what is the Frontal Plane.  Body parts that are in the front of the plane can be called Ventral or Anterior. The back of the body is called Dorsal or Posterior.                

 Directional Terms                          

Proximal and distal are two other directional terms that let you know where the extemities are. (arms & Legs). They can also be called the point of reference.

Body Cavities

What are body cavities??? NO, I'm not talking about going to the dentist and having cavities in your teeth!! I'm talkin about parts in YOUR body where YOUR organs are hanging out, relaxing, and chilling! The dorsal cavity is in the back of your body which is divided into two sections: the cranial cavity and the spinal cavity. Your cranial cavity contains the nucleus...which is your brain! In the spinal cavity you have your spinal cord! The ventral cavitites are wayyyyyy bigger in size than your dorsal cavity! Did you know that this cavity, the ventral cavity, is seperated into TWO distinct cavites by a dome-shaped muscle, which is called the diaphargm?? (important for respiration/breathing) Do you know where your lungs, heart, bronchi and large blood vessels are hanging out at? No? They are chilling in your Thoracic cavity,which is located in your chest!  The abdominal cavity is divided into an upper and lower part. The upper abdominal cavity is where your stomach, liver, pancreas, small intestine and most of the large intestine hang out. The lower abdominal cavity/ pelvic cavity  is where your urinary bladder, reproductive organs and the last part of the large intestines hang out at.

You have 3 small cavities that are called orbital..which is for the eyes, nasal.. which is for your NOSE and buccal which is for your teeth and tongue!

Abdominal Regions

Your abdominal cavity is so large that it is divided into regions or sections. They are divided into QUADRANTS.. You have a Right upper quadrant (RUQ), Left upper quadrant (LUQ), Right Lower Quadrant (RLQ) and the Left Lower Quadrant (LUQ). WAIT! There is ANOTHER method of division which is into nine abdominal regions! The center regions are the epigastric (above the stomach), umbilical (near the belly button), and hypogastric/pelvic (below the stomach). On each side of the center the regions are hypochondriac (below the ribs), lumbar (near the large bones of the spinal cord, and iliac which is near the groin.

COOL FACT: ALL THESE TERMS ARE USED A LOT IN THE STUDY OF HUMAN ANATOMY!!

Beyonce Preparing Two Albums, Confirms Ryan Tedder

Edder, Ryan. "Beyonce Preparing Two Albums, Confirms Ryan Tedder." ACESHOWBIZ. N.p., 2/16/12. Web. 29 Feb 2012. <http://www.aceshowbiz.com/news/view/00047909.html>.

     On February 7^th, Beyonce Knowles had her first daughter, Blue Ivy Carter. She is not slowing down in the music industry. Beyonce is already working on her next two albums that are set out to come out in 2012. Beyonce says she won’t follow the music trend of this year; she wants to set her own trend.  The OneRupublic member is giving Beyonce songs about parenthood for her new album.

      I feel like Beyonce is not going to put more than she can handle on her plate. If she feels like she is ready to work on not ONE but TWO new albums then go for it! I can’t wait to see what she has in store for us “Beyonce Fans”. I hope she goes above and beyond with whatever new trend she is going to set. Everybody is going to be so shocked; like “WOW, this is great!”