{"id":2732,"date":"2023-04-05T16:01:43","date_gmt":"2023-04-05T10:31:43","guid":{"rendered":"https:\/\/www.tutoroot.com\/blog\/?p=2732"},"modified":"2023-04-07T11:56:19","modified_gmt":"2023-04-07T06:26:19","slug":"a-complete-guide-to-human-anatomy-and-physiology","status":"publish","type":"post","link":"https:\/\/www.tutoroot.com\/blog\/a-complete-guide-to-human-anatomy-and-physiology\/","title":{"rendered":"A Complete Guide to Human Anatomy and Physiology"},"content":{"rendered":"

Human anatomy and physiology are oriented to assist you in learning and understanding how the human body is organized and works.<\/span>\u00a0<\/span><\/p>\n

The human body is constructed of 30 – 40 trillion cells, with an estimated 242 billion new cells being formed every day. A tissue is formed when a specific set of cells with similar tasks come together. Tissues combine to form organs, and groups of organs combine to form organ systems and finally, a whole organism.<\/span>\u00a0<\/span><\/p>\n

What is Human Anatomy?<\/span><\/b><\/h2>\n

Human anatomy is the scientific study of the structures of the human body. Some of these organs are so small that they can only be seen and studied under a microscope. Other structures may be observed, moved, measured, and weighed with ease. Human anatomy was originally studied by analyzing the outside of the body as well as military wounds and other traumas. Eventually, physicians were permitted to dissect the bodies of the dead to advance their knowledge.<\/span>\u00a0<\/span><\/p>\n

\"A<\/p>\n

Human Anatomy<\/span><\/b><\/h2>\n

Skeleton<\/span><\/b><\/h4>\n

The human body moves in several ways, including walking, running, crawling, jumping, and climbing. The skeleton is the structure that allows us to carry out all of these tasks. Humans are born with up to 300 bones. With age, however, the bones begin to merge. The total number of bones in maturity is decreased to 206.<\/span>\u00a0<\/span><\/p>\n

The skeleton also shields important organs including the heart, lungs, and liver. Ligaments, fibrous connective tissue, link bones to other bones.<\/span>\u00a0<\/span><\/p>\n

Joints are the locations where two or more bones come together. They allow for a variety of movements such as rotation, abduction, adduction, protraction, retraction, and others. Joints are typed as moveable or immovable based on their flexibility and movement. Movable joints are flexible, while immovable joints are not because the bones are bonded.<\/span>\u00a0<\/span><\/p>\n

Muscles<\/span><\/b><\/h4>\n

Muscles are specialized tissues that help the bones move. Tendons connect the muscles to the bones. The contraction and relaxation of the relevant muscles in that area cause limb movement. While joints aid in bone flexibility, a bone cannot be bent or stretched until a muscle works on it. To put it another way, the muscles linked to that bone pull it in the direction of movement.<\/span>\u00a0<\/span><\/p>\n

Additionally, the majority of movement includes muscles that operate in tandem. As we bend our arm, for example, the muscles in that region contract, grow shorter and stiffer and pull the bones in the direction of movement. Muscles in the opposite direction must draw the bones towards it for relaxation (stretching).<\/span>\u00a0<\/span><\/p>\n

Body Parts<\/span><\/b><\/h4>\n

Anatomy studies show that human body parts may be classified into nine positions: the head, neck, chest, belly or abdomen, pelvis, back, hip, extremities, and trunk.<\/span>\u00a0<\/span><\/p>\n

\"Human<\/span><\/p>\n

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Body Structure<\/span><\/b><\/h4>\n

The human body is divided into cavities that contain numerous organ systems.<\/span>\u00a0<\/span><\/p>\n

The cranial cavity is the space within the skull that protects the brain and other central nervous system components. The pleural cavity protects the lungs.<\/span>\u00a0<\/span><\/p>\n

The intestines, liver, and spleen are all housed in the abdominal cavity.<\/span>\u00a0<\/span><\/p>\n

What is Human Physiology?<\/span><\/b><\/h2>\n

The term physiology is derived from the Greek word meaning natural study. It is the study of how the body and its parts operate or work. It refers to human physical, mechanical, and biological activities. This demonstrates how the human body adapts to physical work, stress, and sickness.<\/span>\u00a0<\/span><\/p>\n

Body Parts and their functions<\/span><\/b><\/h2>\n

The body parts include the circulatory system, the Nervous System, the Respiratory System, the Digestive System, the Urinary System, and the Reproductive System (Female and Male).<\/span>\u00a0<\/span><\/p>\n

An estimated 79 organs have been recognized till date. Humans also have organs that have “lost” their function as we have evolved, which are known as Vestigial organs.<\/span>\u00a0<\/span><\/p>\n

There are five critical organs for survival, and any injury to these five organs may result in death. They are the brain, heart, liver, lungs, and kidneys.<\/span>\u00a0<\/span><\/p>\n

The Circulatory System<\/span><\/b><\/h4>\n

The circulatory system’s function is to transport blood, nutrients, oxygen, carbon dioxide, and hormones throughout the body. The heart, blood, blood vessels, arteries, and veins form the circulatory system. Circulation consists mostly of two components:<\/span>\u00a0<\/span><\/p>\n