1 HUMAN BODY SYSTEMS INTRODUCTIONINTRODUCTION INTRODUCTION INTRODUCTIONINTRODUCTION Who are we? We can learn the answer to this question by observing, hypothesizing, experimenting, and analysing. We are complex living beings in a complex, contradictory, ever-changing world. We know that we do not ...
Single and multiple chambered: in a single chambered system, all waste is composted in a single chamber, whereas a multiple chambered system has two or three composting tanks. (c) Waterless and water-based toilets: there is a vertical pipe which is used to convey the waste in waterless toile...
A trap bag edge connector comprises a compartment together two films composed of the bag member (301), a spacer disposed in said film on one, for the collecting bag connected to the body on the opening import, an elongated discharge portion (308), the end portion of the bag member is ...
Human cardiovascular system, organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. Blood is propelled by the heart, with arteries, capilla
Feces, solid bodily waste discharged from the large intestine through the anus during defecation. Feces are normally removed from the body one or two times a day. About 100 to 250 grams (3 to 8 ounces) of feces are excreted by a human adult daily. Normal
Digestive:The digestive system consists of a series of connected organs that together allow the body to break down and absorb nutrients from food and remove waste. It includes the mouth, esophagus, stomach,small intestine, large intestine, rectum and anus. The large intestine is home to microorga...
A large proportion of worldwide e-waste is exported to China. Due to the crude recycling process, many pollutants, such as persistent organic pollutants and heavy metals, are released from e-waste, which can easily accumulate in the human body through the inhalation of contaminated air. After ...
The job of the circulatory system is to provide oxygen and nutrients to all the parts of the body. Waste products like carbon dioxide are carried away so they can leave the body. 循环系统的职责在于为全身供给氧气和营养,同时排除二氧化碳等废气废液。
human cardiovascular system, organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the blood is propelled by a muscular heart. Two circuits...
body waste. In the case of sanitary sewers, this 165 gallons of annual body waste is carried to complex and costly centralized sewage treatment plants. There, depending on the level and type of treatment system, only 40 to 90 percent of the harmful matter that is introduced into otherwise ...