external organs of human body and their functions pdf

External organs of human body and their functions pdf

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What are the organs of the human body?

How Many Muscles Are in the Human Body?

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Comparing Numbers.

What are the organs of the human body?

Human digestive system , system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract , or the series of structures and organs through which food and liquids pass during their processing into forms absorbable into the bloodstream. The system also consists of the structures through which wastes pass in the process of elimination and other organs that contribute juices necessary for the digestive process. The digestive tract begins at the lips and ends at the anus. It consists of the mouth , or oral cavity, with its teeth , for grinding the food, and its tongue , which serves to knead food and mix it with saliva ; the throat, or pharynx ; the esophagus ; the stomach ; the small intestine , consisting of the duodenum , the jejunum, and the ileum ; and the large intestine , consisting of the cecum , a closed-end sac connecting with the ileum, the ascending colon, the transverse colon, the descending colon, and the sigmoid colon , which terminates in the rectum.

How Many Muscles Are in the Human Body?

The term tissue is used to describe a group of cells that are similar in structure and perform a specific function. Histology is the the field of study that involves the microscopic examination of tissue appearance, organization, and function. Tissues are organized into four broad categories based on structural and functional similarities. The primary tissue types work together to contribute to the overall health and maintenance of the human body. Thus, any disruption in the structure of a tissue can lead to injury or disease. Epithelial tissue refers to groups of cells that cover the exterior surfaces of the body, line internal cavities and passageways, and form certain glands.

Skip to main content. Search form Search. Organs in the body. Organs in the body organs in the body The Center for Biomedical Informatics and Information Technology CBIIT mission is supported by the: Learn how to get started organizing, storing and decluttering your life with free tutorials, DIY projects, checklists and calendars. Male reproductive system Internal reproductive organs Testes Epididymis Vas deferens Seminal vesicles Prostate Bulbourethral glands Testes Epididymis Vas deferens Seminal vesicles Prostate Bulbourethral glands External reproductive organs Penis Scrotum Penis Scrotum Altogether, there are 10 large organs in the body, which include skin, liver, brain, lungs, heart, kidney, spleen, pancreas, thyroid and joints.


internal and external environment. Cell type - Nerve. Major Organs and Their Functions. Brain – control center of the body, where all processes are relayed.


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Have you ever wondered how many muscles you have in your body? The answer to this question actually depends on the type of muscle. Other muscle tissue, such as smooth muscle, typically occurs on a cellular level, meaning that you can actually have billions of smooth muscle cells. The muscles of your body perform a variety of vital functions. Some examples can include facilitating movement, moving food through your digestive tract, and working to allow your heart to pump blood.

This article contains a list of organs of the human body. It is widely believed that there are organs; however, there is no universally standard definition of what constitutes an organ, and some tissue groups' status as one is debated. For example, this list contains much more than 79 different organs.

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Body functions are the physiological or psychological functions of body systems. The body's functions are ultimately its cells' functions. Survival is the body's most important business. Survival depends on the body's maintaining or restoring homeostasis , a state of relative constancy, of its internal environment.

Different organs can work together to perform a common function, like how the parts of your digestive system break down food. We refer to an integrated unit as an organ system. Groups of organ systems work together to make complete, functional organisms, like us! There are 11 major organ systems in the human body. The circulatory system is a body-wide network of blood, blood vessels, and lymph. Read more. Every tissue within the body requires oxygen to function.

Younger primary students may have little knowledge about internal bodily organs. They tend to think the contents of the body are what they have seen being put into or coming out of it, such as food and blood. Their experiences with everyday cuts, scratches and bruises seem to reinforce a view that blood is below the surface of the skin, filling the spaces inside the body like a bag of blood.

1 comments

  • Juventino R. 14.05.2021 at 19:07

    Please understand that our phone lines must be clear for urgent medical care needs.

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