1.2.1: Human Body Systems
Reproductive System
Consist of the vagina, ovaries, and uterus in females; the penis, testes, and prostate in males. Responsible for production, transport, and sustaining sperm and egg cells as well as nurturing the development of offspring.
Skeletal System
Consists of bones and joints. Protects and supports body organs; provides a framework the muscles can use to cause movement; stores minerals.
Lymphatic and Immune Systems
Consists of lymph nodes, the spleen, thymus, and bone marrow. Filters fluid in the body; mounts the attack against foreign substances in the body.
Muscular System
Consists of skeletal muscles, tendons that connect muscles to bones, and ligaments that attach bones together to form joint. Moves the body and moves substances around the body; maintains posture; produces heat.
Endocrine System
Consists of the adrenal glands, pituitary gland, ovaries, and testes. Secretes hormones that regulate processes such as growth, reproduction, and metabolism by body cells.
Nervous System
Consists of the brain, spinal cord, nerves, and sense organs. Responds to internal and external changes by activating an appropriate response; processes information.
Cardiovascular System
Consists of the heart, blood vessels, and blood. Pumps blood around the body; transports oxygen, carbon dioxide, nutrients, and waste.
Urinary System
Consists of the kidneys, ureters, urinary bladder, urethra. Filters fluid in the body; mounts the attack against foreign substances in the body.
Respiratory System
Consists of the lungs, nasal cavity, trachea, and bronchus. Assists with gas exchange with the external environment; keeps blood supplied with oxygen and removes carbon dioxide.
Digestive System
Consists of the oral cavity, esophagus, stomach, small intestine, large intestine, and liver. Breaks down food into its nutrient molecules; absorbs nutrients; rids the body of wastes.
Integumentary System
Consists of the skin, mucous membranes, hair, and nail. Forms the body's external coverings; protects deeper tissue from injury; helps regulate body temperature.
