Organization of the Human Body APL3

Body cavities Dorsal Cavity Cavities filled with visceral organs Cranial cavity—contains the brain Spinal cavity-contains the spinal cord Cavities filled with visceral organs Ventral cavity Thoracic cavity-contains the lung and the heart Abdominal cavity—contains the spleen, liver, stomach, small and large intestine. Pelvic cavity-contains the large intestine, the bladder.

Pleural cavity Cover the two lungs individually Complications?

Pericardial cavity Outer covering of the heart Similar complications as with the lungs

Characteristics of Life Movement Responsiveness Growth Reproduction Respiration Digestion Absorption Circulation Excretion Together these constitute metabolism: Vital signs

Integumentary System the skin Purpose: waterproofing (homeostasis), cushions, protects

Skeletal System— bones cartilages ligaments joints. Purpose: protects and supports body organs  

Muscular System Deltoid Biceps Triceps Purpose: movement, produces Heat. Evan Centopani, Trumbull CT

Nervous System Brain and nerves Fast acting control center Controls muscles and glands

Endocrine system —secrete hormones to regulate processes such as metabolism, growth, nutrient regulation. Hormone (very basic definition)—a chemical released in one part of the body that affects cells in another part of the body.

Cardiovascular system Transports blood, oxygen, carbon dioxide, nutrients and wastes. The heart is a pump.

Lymphatic System Picks up fluid leaked from blood Vessels and returns it to blood. Houses WBC involved in immunity.

Respiratory sytem Keeps blood supplied with oxygen. Removes carbon dioxide.

Digestive System Breaks food down so body can absorb it. Elimates indigestable foodstuff eliminated as feces.

Urinary System Eliminates nitrogenous wastes From the body. Regulates water, electrolytes and acid-base balance.

Reproductive System Testis produce sperm Ovaries produce eggs. Both produce Sex hormones.