Søkt på: the human body
Vi gjorde et søk på tittelen istedenfor the human body som gavtotalt 9 treff
The Respiratory System
Breathing is essential to human survival, as it gives us the necessary oxygen we need to live. Yet, the act of respiration is an involuntary process, something many people don't …
The Reproductive System
Organisms reproduce to ensure the continued survival of their respective species. For humans, our ability to produce offspring and contribute to genetic variability in the world is …
The Circulatory System
Composed of the heart, blood vessels, and blood, the circulatory system delivers oxygen and nutrients to every tissue in the body. At the center of this incredibly complex system …
The Endocrine System
Much like the nervous system, the endocrine system relays important communication signals throughout the body. The endocrine system uses chemical signals, known as hormones, which …
The Immune System
The immune system is crucial to the normal functioning of the human body. As the body's 'military', it prevents invaders from entering and destroys those who slip past its …
The Skeletal and Muscular Systems
The skeletal and muscular systems not only allow us to move and stand tall, but they are also involved in protecting the body, allowing it to grow, and performing subconscious …
The Nervous System
The nervous system allows us to move, feel, and think, and it is involved in nearly all of the functions of the human body. Nerves communicate signals between the brain and …
Human Development
Each step in a human's development - from the creation of the brain and heart to the formation of the fingers and toes - is carefully regulated. During the approximately 264 days …
Cells, Tissues, and Skin
Cells are the smallest units capable of sustaining life, and they make up virtually every aspect of the human body. From the strands of hair at the top of the head to the nails on …