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Three Human Body Systems (Digestive System: the main way the human body…
Three Human Body Systems
Urinary System: the main way the human body excretes waste, which is through the removal of the accumulation of cell waste in the blood.
Urethra
The urethra is a tubular structure through which urine is taken before it is removed from the body. The inside of it consists of three parts: a muscular wall, transitional epithelium, and lumen. The muscular wall is an outer covering around the transitional epithelium which is a thin tissue forming the urethra's outer layer. The transitional epithelium forms around the lumen, which is Latin for "opening."
Ureters
There are two ureters in the human body, both of which are tubular structures connecting from the kidneys to the bladder through which urine is taken to the bladder to be stored.
Kidneys
There are two kidneys in the human body, both of which remove urea (excess water and other wastes) from the blood through filtration.
Bladder
The bladder is a saclike muscular organ which stores urine taken from the kidneys through the ureters until it is released from the body through the urethra.
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Digestive System: the main way the human body digests and breaks food down into smaller nutrients and then uses it.
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Rectum
The rectum is the lower section of the large intestine inside of which feces are stored and wait to be removed from the human body.
Small intestine
The small intestine is the organ inside of which most chemical digestion occurs. This is where nutrients enter the bloodstream.
Anus
The anus is the muscular opening at the end of the rectum out of which solid waste (feces) exits the human body.
Stomach
The stomach is a large muscular sac that continues mechanical digestion through churning and begins chemical digestion of proteins.
Liver
The liver is an accessory digestive organ, or an digestive organ that is not part of the digestive tract. It produces bile and stores glycogen.
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Mouth
The mouth is the first organ in the digestive tract, or the path that food takes through the human body. It is where the chemical digestion of carbs begin, as well as mechanical digestion through chewing.
Pancreas
The pancreas is another accessory organ that produces digestive juices such as insulin that enter your small intestine.
Gallbladder
The gallbladder is another accessory organ inside of which the bile produced in the liver is stored and concentrated.