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16 terms

Mr. Nerboso - Human Body Systems

6th grade human body systems review
STUDY
PLAY
organizational hierarchy
cell, tissue, organ, organ system, organism
organism
a living thing.
organ system
a group of organs that work together to perform a major function.
organ
a structure composed of different kinds of tissue that perform a specific function.
tissue
a group of similar cells that perform a specific function.
cell
the basic unit of structure and function in a living thing.
Skeletal System
Structures: bones, joints, ligaments, and cartilages
Function: supports and protects the body.
Muscular System
Structures: muscles, tendons
Function: enables movement of the body and internal organs.
Circulatory System
Structures: heart, veins, arteries, capillaries, blood
Function: transports oxygen and nutrients to the cells of the body.
Respiratory System
Structures: trachea, lungs, bronchi, alveoli
Function: takes in oxygen and eliminates carbon dioxide
Digestive System
Structures: Mouth, esophagus, stomach, small and large intestine
Function: breaks down food and absorbs nutrients.
Nervous System
Structures: brain, spinal cord, nerves
Function: detects information from the environment and controls body functions.
Excretory System
Structures: skin, lungs, kidneys, ureters, bladder, urethra
Function: removes wastes produced by cells
Immune System
Structures: white blood cells, antibodies, lymph nodes, skin
Function: defends the body against disease
homeostasis
the body's ability to respond to its environment to keep itself alive.
cellular respiration
a process that happens in mitochondria where oxygen is chemically combined with glucose in a cell to release energy.