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Vor 6 Tagen · Learn about the structure, function, and composition of the human body, the physical substance of the human organism. Explore the tissues, organs, systems, and biochemical constituents of the body, as well as its development and evolution.
- The Editors of Encyclopaedia Britannica
- Chemically, the human body consists mainly of water and organic compounds—i.e., lipids, proteins, carbohydrates, and nucleic acids. The human body...
- The four main types of tissue in the human body are epithelial, muscle, nerve, and connective.
- The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory sy...
Vor einem Tag · e. Anatomy (from Ancient Greek ἀνατομή (anatomḗ) ' dissection ') is the branch of morphology concerned with the study of the internal structure of organisms and their parts. [1] Anatomy is a branch of natural science that deals with the structural organization of living things.
Vor 4 Tagen · The circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate.
16. Mai 2024 · Where is the heart located in the human body? In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the muscular partition between the chest and the abdominal cavity.
- The Editors of Encyclopaedia Britannica
- The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
- The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
- The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...
6. Mai 2024 · anatomy, a field in the biological sciences concerned with the identification and description of the body structures of living things. Gross anatomy involves the study of major body structures by dissection and observation and in its narrowest sense is concerned only with the human body.
- The Editors of Encyclopaedia Britannica
Vor 4 Tagen · Anatomy. There are four types of bones in your body: long bones, short bones, flat bones, and irregular bones. The femur—the only bone in the upper leg—is a long bone. Longer than they are wide, this type of bone has spongy bone tissue at both ends and a cavity filled with bone marrow in the shaft.
16. Mai 2024 · Science, Physical Education. Back to top. The human body has numerous systems that are structured to perform specific bodily functions, but they're also interconnected and dependent on one another.
