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Male Reproductive System

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 testes.  Read more . Learn more about these body parts in the male reproductive system: penis testis epididymis vas deferens

Reproductive system (female)

Reproductive system (female) The female reproductive system encompasses all necessary female organs needed to conceive and bear a child.  Read more . Learn more about these body parts in the female reproductive system: vagina cervix ovary uterus

Nervous System

Nervous system The nervous system allows us to perceive, comprehend, and respond to the world around us. The nervous system also operates the body’s essential physiologic functions, such as breathing and digestion.  Read more . Learn more about these body parts in the nervous system: brain spinal cord meninges dura mater

Muscular System

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.  Read more

Skeletal System

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

Digestive System

Digestive system The digestive system enables your body to convert food into usable nutrients through a chemical breakdown process. This occurs through a system of tube-like of organs, including the esophagus, stomach, liver, pancreas, and intestines.  Read more . Learn more about these body parts in the digestive system: Mouth Tongue Teeth Pharynx Diaphragm Stomach Spleen Liver Gallbladder Pancreas Small intestine

Respiratory System

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.  Read more . Learn more about these body parts in the respiratory system: nose lungs pharynx bronchi