21 terms

How is the human body Organized?

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Cell:
is the basic unit of structure and function in the Human Body.
Tissue:
is a group of similar cells that perform the same function. There are four basic types: muscle, nerve tissue, connective tissue, and epithelial tissue.
Organ:
is a structure that is composed of different kinds of tissue. Like a tissue, an organ performs a specific job.
Organ system:
is a group of organs that work together to perform a major function of the body.
The levels of organization in the human body
consist of cells, tissue, organs and organ systems.
Homeostasis:
is a process that keeps the internal environment stable in spite of changes in external environments.
Muscle tissue
makes parts of the body move by contracting, or shortening muscles.
Nerve tissue
carries messages back and forth between the brain and other parts of the body- Brain, spinal cord, or nerves.
Connective tissue
supports the body and connects all its parts, Blood, fat cartilage, bones, or tendons.
Epithelial tissue
covers the surfaces of the body, inside and out - Skin, lining of digestive system.
Subsystems of the human body:
there are 11 body subsystem that interact to carry out key body functions.
Reproductive system
Reproduce
Skeletal system
Move - protect
Digestive system
Takes food into body and breaks it down
Respiratory system
Takes oxygen into body
Nervous system
Controls and coordinates the environment
Muscular system
Provides movement
Circulatory system
Carries materials to and from the body.
Immune system
Fights diseases.
Excretory system
Removes waste -excrete
Skin system
protects the body, keeps in water and helps to regulate temperature.