2 OrganA structure made up of two or more kinds of tissues that can perform a complex function
3 SystemA group of organs that perform more complex functions than an organ can by itself.
4 Organ Systems of the Body IntegumentarySkeletalMuscularNervousEndocrineCardiovascularLymphaticRespiratoryDigestiveUrinaryReproductiveMaleFemale
5 Integumentary SystemSkin- largest and most important organ of this systemAccessory StructuresHairNailsSweat GlandsOil-producing GlandsSense organs- respond to stimuliSkin accounts for 16% of an adult’s body weight.Primary function is protection- bacteria, exposures, etc.Helps to regulate body temperature.
6 Skeletal System Bones Cartilage and Ligaments 206 bones in the human body.Functions: support and protection, movement, storage of minerals and formation of blood
7 Muscular System Muscles Voluntary Involuntary or Smooth Cardiac Muscles are attached to bones by tendons.Contractions of voluntary and smooth musclesCardiac is specialized
8 Nervous System Brain, spinal cord, and nerves Communication between body functionsIntegration of body functionsControl of body functionsRecognition of sensory stimuliFunctions of the NS are accomplished by nerve impulses.Sense organs react to stimuli and generate impulses to relay info to brain
9 Endocrine SystemPituitary gland, pineal gland, hypothalamus, thyroid, parathyroid, thymus, adrenal glands, pancreas, ovaries, and testesComposed of specialized glands and cells that secrete hormones.General functions: communication, integration, and controlThink of the Endocrine System like a dial-up internet.
10 Cardiovascular (Circulatory) System Includes the heart and blood vesselsPrimary function is transportation, however, it assists in maintaining body temperatureCertain blood cells are specialized and assist in the defense of the body or immunityClosed system of blood vessels- arteries, veins, and capillaries
11 Lymphatic SystemComposed of lymph nodes, lymphatic vessels and lymphatic organs such as tonsils, thymus, and spleenLymph- whitish, watery fluid that contains lymphocytes, proteins, and some fatty moleculesFunction:Movement of fluids and certain large moleculesImmune systemThymus functions both as an endocrine and lymphatic glandNot a closed system as lymph will eventually enter into the circulatory system
12 Respiratory System Movement of air Gas exchange Alveoli- tiny, thin-walled sacs in lungsWarms and humidifiesFiltersGas exchangeIncludes the nose, pharynx, larynx, trachea, bronchi and lungs
13 Digestive System Proper digestions and absorption of nutrients Primary OrgansMouth, pharynx, esophagus, stomach, small and large intestines, rectum and anal canalForms a continuous tube called the gastrointestinal tract (GI)Accessory OrgansTeeth, salivary glands, tongue, liver, gallbladder, pancreas, and appendixAccessory organs provide the mechanical or chemical breakdown of foodMention appendix
14 Urinary System Kidneys, ureters, bladder, and urethra Kidneys Urine Clean the blood of waste productsMaintain balance of electrolytes, water and acid-base (pH)UrineWaste product produced by the kidneys
15 Reproductive Systems Male Gonads Testes: produce sperm Genital Ducts Vas deferensAccessory OrgansprostateGenitaliaPenisScrotum