Human Body (Organ Systems)

Introduction

The human body system is the group of organ systems work together to make complete functional organisms. The different organs can work together to perform a common function, similar to how the parts of your digestive system break down food. The human body system consists of circulatory system, respiratory system, digestive system, skeletal system, muscular system, nervous system and reproductive system.

Circulatory System

The circulatory system is a body-wide network of blood, blood vessels, and lymph nodes. Powered by the heart, it is the body’s distribution system to organs with oxygen, hormones and essential nutrients that helps it function properly.

Body parts in the circulatory system:

• Heart.
• Lungs.
• Brain.
• Kidneys.

Respiratory system

Every tissue within the body requires oxygen to function. The respiratory system, which includes air passages, pulmonary vessels, the lungs, and breathing muscles, provides oxygenated blood to the body tissues and removes waste gases.

Body parts in the respiratory system:

• Firstly, nose.
• Secondly, lungs.
• Thirdly, pharynx.
• Fourthly, bronchi.

Digestive system

The digestive system enables your body to convert food into usable nutrients through a chemical breakdown process. So this occurs through a system of tube-like of organs, including the esophagus, stomach, liver, pancreas, and intestines.

Body parts in the digestive system:

• Mouth.
• Tongue.
• Teeth.
• Pharynx.
• Diaphragm.
• Stomach.
• Spleen.
• Liver.
• Gallbladder.
• Pancreas.
• Small intestine.

Skeletal system

The skeletal system gives the body its basic framework, providing structure, protection, and movement. The skeletal system consist of 206 bones in the body also produce blood cells, store important minerals, and release hormones necessary to life.

Muscular system

The muscular system is comprised of the sum total of muscles throughout the body that move the skeleton, maintain posture through steady contraction, and generate heat through cell metabolism.

Humans have three types of muscle.

• Firstly the Skeletal muscle – this type of muscle creates movement in the body. There are more than 600 skeletal muscles, and they makes up about 40 percent of a person’s body weight.
• Secondly the Cardiac muscle – is involuntary muscle. This type makes up the walls of the heart and creates the steady, rhythmic pulsing that pumps blood through the body from signals from the brain.
• Thirdly the Smooth muscle – makes up the walls of hollow organs, respiratory passageways, and blood vessels. Its wavelike movements propel things through the bodily system, such as food through your stomach or urine through your bladder.

Nervous system

The nervous system allows us to perceive, understand and respond. In addition, the nervous system also operates the body’s essential physiologic functions, such as breathing and digestion.

Body parts in the nervous system:

• Firstly, brain.
• Secondly, spinal cord.
• Thirdly, meninges.
• Lastly, fura mater.

Reproductive system (female)

The female reproductive system encompasses all necessary female organs needed to conceive and bear a child.

Body parts in the female reproductive system:

• Firstly, vagina.
• Secondly, cervix.
• Thirdly, ovary.
• Lastly, uterus.

Reproductive system (male)

The male reproductive system consists of a series of organs used during sexual intercourse and procreation. The primary organs are the gonads, or sex glands, which produce sperm. In men, these are the testis.

Body parts in the male reproductive system:

• Firstly, penis.
• Secondly, testis.
• Thirdly, epididymis.
• Lastly, vas deferens.

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