Download Cornell Notes: Body Systems - CGW-Life-Science

Guided Cornell Notes: Organization of the Body
How the body is organized: AKA Levels of Organization: get more complex from 1 4
1. Cells
3. Organs
2. Tissues
4. Organ systems
Tissue: cells working together with a common purpose. Four main types of tissues:
1. connective tissue: adds support and structure to body.
a. Ligaments
connect bone to bone
b. Tendons
connect bone to muscle
c. Blood, fat tissue
2. muscle tissue: three types
a. skeletal AKA striated muscles = biceps, triceps, abdominals, calves, etc.
b. smooth = inside of your guts
c. cardiac = found only in the heart
3. epithelial tissue = linings and coverings = inside of mouth, outer layer of skin
4. nervous tissue: generates and conducts electrical signals in the body.
Responsible for detecting and responding to stimuli
Organs: tissue working together with a common purpose
Human Examples: heart, brain, lungs, “guts”, eyes, ears, skin
Organ Systems: organs working together with a common purpose
Eleven Organ Systems in the human body
Organ System
Function
Organs
Nervous
Controls body functions
Brain, spinal cord, nerves
Respiratory
Oxygen in, CO2 out
Lungs, mouth, esophagus
Digestive
Breaks down food, absorbs nutrients
Mouth, throat, stomach, intestines, liver
Excretory
Gets rid of wastes
Kidneys, bladder, lungs, skin
Skeletal
Supports and protects the body
Bones, ligaments, tendons
Muscular
Allows movement of body and in organs
All muscles (striated, smooth, cardiac)
Circulatory
Transports materials to and from cells
Heart, blood vessels,
Reproductive
Allows next generation to be produced
Ovaries, testes, uterus
Lymphatic
Immune system that fights diseases
Lymph nodes, thymus, spleen
Integumentary
Protects body; outer covering
Skin, hair, finger/toenails
Endocrine
Controls body processes with chemicals
Pituitary, thyroid, adrenal glands, testes,
ovaries, pancreas