Presentation on theme: "Human Body Systems Body systems work together and depend on one another Subtitle."— Presentation transcript:
1 Human Body SystemsBody systems work together and depend on one anotherSubtitle
2 How Is the Body Organized? CellsTissuesOrgansOrgan Systems
3 Cells The smallest unit of life Individual cells in multicellular organisms tend to be specialized.Specialized cells are uniquely suited to perform a particular function.Bone CellBlood CellNerve Cell
4 Tissues Come together to make A group of cells that work together to perform a specific function in the bodyex: many muscle cells join to make up muscle tissueCome together to makeMuscle cells
5 OrganTwo or more tissues working together to perform a specific job. Ex: brain, stomach, intestine, heart, lungs, skin, earsIn order for the heart to work, blood tissue, muscle tissue, and nerve tissues work together.
6 Organ System Skin/Integumentary Cardiovascular/Circulatory Muscular Different organs working together to perform a particular job make up an organ systemthere are 11 organ systems in the human body:Skin/IntegumentaryCardiovascular/CirculatoryMuscularSkeletalNervousRespiratoryDigestiveUrinaryReproductiveLymphatic/ImmuneEndocrine (hormones)bones + cartilage+ ligaments + joints= Skeletal System
8 Skin, nails, & hair Integumentary System The largest organ of the human body.Skin covers the body & prevents water lossProtects against injuries & infections
9 Muscular System There are about 600 muscles in the body. Muscles work with bones for movement.Muscles work by contracting and relaxing.Body has three types of muscles:Skeletal muscleSmooth muscleCardiac muscle
10 Skeletal System The skeletal system Provides shape and support Allows the body to moveProtects the internal organsProduces blood cells
11 Cardiovascular System The cardiovascular systemConsists of heart, blood vessels, & bloodCarries nutrients and oxygen to cellsRemoves waste from the cells
12 Respiratory System The respiratory system Moves oxygen from outside into the bodyRemoves carbon dioxide from the bodyNose, pharynx, trachea, bronchi, and lungs are all organs of respiratory system
13 Digestive system The digestive system Breaks down food into nutrients (digestion)Absorbs nutrients into blood stream (absorption)Eliminates waste from the bodyStarts at the mouth and ends at anus
15 Urinary System The urinary system Collects liquid waste produced by the cellsRemoves the waste from the body (excretion)Filtering waste produces urine.The two kidneys, ureters, urinary bladder, and urethra, are the organs of urinary system.KidneyUreterBladder
16 Nervous System The nervous system Consists of the brain, spinal cord, and neuronsReceives information about inside & outside of the bodyResponds to the received informationHelps maintain homeostasisHuman body temp:37 C (98.6 F)
17 Immune SystemImmune system defends the body against pathogens (bacteria & viruses)The cells of the immune system recognize the different kind of pathogen and destroy them.
18 Endocrine System The endocrine system controls the body’s daily activitiesControls growth and developmentProduces chemicals named hormonesHormones order organs what to do
19 Reproductive SystemThe male and female reproductive system produce sex cells and sex hormones.Female reproductive system nourishes the developing fetus and gives birth.