Human Body
Levels of Organization
Organ: 2 or more tissues working together for a function
Organ system: A group of 2 or more organs working together to perform a function
Tissue: Similar cells working together
Organism: All the organ systems working together to maintain homeostasis
Cell:Basic unit of life
Skeletal system
Parts
Ligaments: connects bones to other bones
Function: Support, Movement, Homeostasis, makes blood, Storage
Bones: (Spongy, compact)
Other systems
Muscular: Movement
Circulatory: Makes red blood cells
Cartilage:White, firm tissue (nose, ear)
Muscular system
Parts
Other systems:Skeletal, circulatory, digestive, nervous
Function: movement, maintain posture, stabilize joints,
Generate heat
Muscles, tendons
Cardiac: Involuntary found in the heart
Skeletal: Voluntary connected to bone
Tendon: Connects bone to muscle
Smooth: Involuntary: found in digestive track
Circulatory System
Parts
Heart
Blood vessels
Blood
Function: Brings essential materials to all cells of the body and carries away cell wastes
Respiratory system
Other systems: Respiratory system
Parts
Nasal cavity, Pharynx, Epiglottis, Larynx, Trachea, Bronchi Bronchioles, Alveoli
Function: To breathe in oxygen and breathe out C02 and other waste products.
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Other systems: Muscular system, Skeletal system, and circulatory system.
Reproductive system
Parts
Digestive system
Parts
Excretory system
Mouth, Liver, Gallbladder, Small intestine, Esophagus, Stomach, Pancreas, Large intestine, Rectum
Function: To break down food and excrete waste from the food
Other systems: Muscular systems
Parts
Male: Penis, Testes, Sperm
Female: Vagina, Womb, Ovaries
Kidneys, Ureters, Urethra, Urine, Bladder
Function: Fliters waste and unneeded nutrients and water out of the blood.
Nervous system
Other systems: Circulatory and excretory
Parts:
Brain, Spinal cord, Nerves
Function: Receives information about what is happening both inside and outside of the body
Other systems: Digestive and Excretory
Endocrine system
Parts
Pancreas, Thyroid, Pituitary Glands, Testes, Ovaries
Function: Produces chemicals that control the body's daily activities
Other systems: Nervous system, Immune system
Function: To produce egg and sperm cells, hormones and to nurture the developing offspring
Other systems :nervous, endocrine, excretory, and circulatory systems
Immune system
Parts: Skin, Mucus, Saliva, White blood cells, T cells, B cells
Function: To defend the body of disease causing organisms, malfunctioning cells, and foreign particles
Other systems: Digestive, Skeletal, Circulatory