body systems Essay

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Body systems
Everything you need to know

Written by Asher Brinton

what is a body system?
A body system is a group of organs or structures that together perform one or more vital functions. An example of this is the Endocrine system. The endocrine system works together to induce sleep and growth along with other things.
Can you list the body systems?
1. The nervous system yes
2. The reproductive system yes
3. The immune system
4. The excretory/urinary system yes
5. The circulatory system yes
6. The skeletal system yes
7. The lymphatic system yes
8. The integumentary system
9. The muscular system .yes
10. The digestive system .yes
11. The respiratory system
12. The endocrine system
All of these systems work hard to keep you moving, breathing and growing as well as other things. They are very important.
What is the nervous system?
The nervous system deals with touch, pain and checks if anything is going wrong with you. It interfaces directly with your brain and helps you feel materials and thermal energy. The nervous system interfaces with the muscular system and the integumentary system to make its job easier. It is made up of the brain, spinal cord and a whole lot of nerves. The spinal cord sends sensory information and motor information to the brain. The nerves receive the information from muscles, skin and the cells all of this information goes directly to the brain or the spinal cord, where it is transported to the brain.

What is the Excretory/urinary system?
The urinary system deals with liquid waste , mostly urea, and it interfaces with the digestive system. it is made up of the kidneys, the ureters, the bladder and the urethra. The kidneys filter out the waste products among other things and sends them through the ureters and into the bladder. The bladder acts like a balloon and as it is inflated with urine it expands. There is a pair of muscles at the bottom of the bladder and they hold it closed until the command is given to relax. The final part of the urinary system is the urethra. When the sphincters (the pair of muscles) are told to relax urine rushes down this and exits the body. This is one of the body parts that varies over the two genders and that difference is in the length of the urethra. The male urethra is about twenty centimeters long while the female urethra is approximately four centimeters long.
What is the reproductive system?
The reproductive system allows us to reproduce. This system varies over the two genders so I will do a paragraph on each gender:
Let’s start with the male reproductive system. This system is composed of the penis, testicles, scrotum, sperm duct, prostate gland and the seminal vesticles. The penis is the male sex organ and the excretory organ for sperm. The testicles create sperm which is sent to the sperm duct. The scrotum is the pouch of skin that hangs below the penis it holds the testicles. These organs work together to fertilize an egg.
The sex glands in women are called the ovaries. The egg or ovum is created there and it is moved through the fallopian tube to the uterus. The uterus is where one of the sperm that has traveled from the vagina , the female sex organ, fertilizes the ovum. If fertilized the pair of cells cling to the wall of the uterus where they can develop into a baby.
What is the immune system?
The immune system is sort of your body’s personal army. Seven organs working together to protect you from bacteria. This system works with the nervous system and the integumentary system very heavily as skin is your main protection against bacteria, the brain is also sending commands about which cells should be sent to do which jobs. The seven organs of this system are the tonsils, lymph nodes, thymus, spleen, intestines, bone marrow and skin.
The jobs of these organs are here. The tonsils stop bacteria from going into your body through the mouth or nose. The lymph nodes contain cells that monitor the lymph and make sure that bacteria are not
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