Body SystemsVocabulary

Systems

Cell – The smallest living thing that can preform life functions

Tissue – group of similar cells working together for one function

Organ – A group of tissues working together

System - A group of organs working together

Skeletal System Gives us shape, protects organs and

produces blood.

Parts Bones – Provide structure, make blood Marrow – Inside of bones, make blood Femur – Strongest bone in the body Cartilage – Soft tissue in between bones Ligament – Holds bones together

Muscular System Movement

Parts: Muscles – Tissues that contract (get shorter

and PULL ONLY!) Tendon – holds muscles to bones Smooth muscles – Run involuntary functions

(lungs, stomach, etc.) Cardiac muscles – Heart muscles never get

tired Skeletal – Move bones

Respiratory System Add oxygen to body and remove carbon

dioxide

Parts: Trachea – brings air to lungs Lungs – hold air Alveoli – Capillaries in alveoli grab oxygen

and give off carbon dioxide Diaphragm – Muscle that operates the

lungs

Digestive System Breaks down food gets rid of waste

Parts: Mouth – Allows food in the body Stomach – breaks down food Large intestines – Absorbs nutrients Bile – Chemical in the stomach used to

break down food.

Circulatory System Brings nutrients and removes waste

from organs

Parts: Heart – Pumps blood throughout the body Artery – takes blood away from heart Vein – Brings blood back to the heart Capillary – Connects arteries to veins. Run

to the surface of all organs Blood – carries nutrients and waste

Nervous System Controls all functions

Parts: Brain – Main control unit of the Nervous

system Nerves – stretch throughout the body and

transfer information Spinal cord – Runs down your back,

connects nerves to brain Synapse – sends information between

nerve cells

Epithelial System Protects the body, controls temperature,

holds your organs in

Parts: Epidermis – Outer layer protects the body Dermis – Middle layer contains sweat

glands, hair follicles and capillaries Hypodermis – Mostly fat, insulates and

absorbs shock Sebaceous fat – connected to hypodermis

insulates and stores energy

Endocrine Produces hormones, that are needed for

proper body function and growth

Parts: Gland – Produces hormones Hormones – chemicals that excite cells Metabolism – Turn food to energy Hypothalamus – maintains homeostasis Pituitary – controls growth

Toaster Heats bread and makes it turn brown.