Body Systems 1
Which organ pumps blood throughout your body?
Heart
Where does digestion begin?
Mouth
Which organ absorbs most of the nutrients from the food you eat and are lined with villi?
Small Intestines
What does the endocrine system use to send messages around the body?
What is the LARGEST organ in the human body?
Skin
Name at least two things the circulatory system carries around your body.
Blood, oxygen, nutrients and waste
Which organ breaks down food using acids and digestive Juices?
Stomach
What protects your brain?
Skull
What body system allows your body to move?
Muscular System
Which organ controls and coordinates many of your body's activities?
Brain
This system removes waste from the body, causing us to sweat and urinate.
Excretory System
A group of similar cells functioning as a unit
tissue
Important structural parts of your body (hair, nails, skin, muscles) hormones, enzymes
proteins
Which body system gives your body support and helps protect your organs?
Skeletal System
What gas does your body get rid of when you breathe out?
Carbon Dioxide
What carries messages between your brain and the rest of your body?
Nerves
Tiny clusters of thin-walled sacs in the lungs.
alveoli
Large, complex organic compounds that store information in the form of a code.
Nucleic Acids or DNA/RNA
A mechanism where the body changes an internal condition back to its normal state. Ex. Controlling blood pressure/maintaining glucose levels
Negative Feedback
Tiny cup-like structures in the kidneys where blood is filtered.
Nephrons
What is the major job of the immune system?
Protect the body from germs and diseases, keep us healthy
These do not restore the body to its normal state, an even greater change is occurring. Ex. Childbirth and blood clotting
Positive Feedback
The process by which the body maintains a stable internal environment.
homeostasis
Which organs filter waste from your blood and make urine?
Kidneys
Put these in order from smallest to largest.
Organ, cell, tissue, organ system, atom, organism
atom, cell, tissue, organ, organ system, organism