Skeletal/
Muscular
Circulatory
Nervous
Digestive
Immune
Respiratory
Endocrine
Excretory
100

Name the five functions of the skeletal system. 

Provides support, allows movement, protects vital organs, produces blood cells, stores minerals and fats. 

100

This organ is known as the "engine" of the body, and is responsible for pumping blood throughout the body.

What is the heart?
100

Known as the control center of the body, this organ is responsible for directing complex tasks in the body, as well as housing important information such as memory, personality, motor skills, etc. 

What is the brain?

100

This organ of the digestive system is responsible for digesting food by crushing it through contractions and via acidic fluid inside of it. 

What is the stomach?

100

The immune system was designed to protect the body from bacteria, viruses, fungal cells, and other __________.

What are pathogens?

100
The respiratory system is responsible for collecting this gaseous element from the atmosphere and distributing it to the circulatory system. 

What is oxygen?

100

This hormone is secreted for only 2 hours during a set period of time in your body. During this period, you begin to feel more tired, prompting you to sleep. If you do not go to sleep during this window, the hormone is no longer being made, making sleep far more difficult. 

What is melatonin?

100

This organ is responsible for holding onto urine before it is ready to leave the body. 

What is the bladder?

200

Most of a baby's skeleton is made up of this substance.

What is cartilage?

200

These types of vessels are responsible for taking oxygenated blood to the rest of the body. 

What are arteries?

200

This cell is responsible for sending and receiving electrical messages in the brain.

What is a neuron?

200

This tube like organ connects the stomach and the mouth. 

What is the esophagus?

200

This cell comes in a variety of types and sizes. It's main job is to locate and destroy pathogens in the body. 

What are white blood cells?

200

This organ is the main muscle of the respiratory system, responsible for creating negative pressure in the lungs to draw in air and then contracting to release the pressure. 

What is the diaphragm?

200

This hormone's creation is stimulated by sunlight. Known as the "motivation" hormone, it is responsible for directing attention and maintaining stable energy levels throughout the day. At the end of the day, it breaks down naturally into melatonin. 

What is serotonin? 

200

These bean shaped organs are responsible for filtering waste products from the blood and returning healthy blood to the body. 

What are kidneys?

300

Bone marrow inside the bones is responsible for making these cells which are responsible for transporting oxygen and other nutrients in the body. 

What are red blood cells?

300

These types of blood vessels take blood towards the heart.  

What are veins?

300

This state of the body is the main function of the nervous system. It is a word deriving from the Greek words for "Similar" and "Holding still."

What is homeostasis?

300

The esophageal muscles use these contractions to take food down to the stomach. 

What is peristalsis? 

300

Diseases such as the flu and the common cold are typically spread via this. 

What is direct or indirect contact with an infected person?

300

These tiny air sacks at the end of the bronchi are surrounded by capillaries. In these sacks, gases such as oxygen and carbon dioxide are exchanged. 

What are alveoli? 

300

These two hormones are known for jumpstarting the process of puberty in adolescence. While both are found within the human body, people with XY chromosomes have more of one of the two hormones, and vice versa with people having XX chromosomes. The two hormones are also responsible for bone health, and mental health. 

What is testosterone and estrogen?

300

These substance is the main waste product filtered out of the body, and is what gives urine it's name. 

What is urea?

400

These muscles are not controlled by your conscious mind, and are controlled primarily by automatic brain signals. 

What are involuntary muscles?

400

This recessive blood type is known as the "Universal Donor."

What is O type blood?

400

This area of the body is responsible for automatic body functions, such as breathing or regulating heartbeat. Located at the base of the brain, it is the main connection between the brain and the spinal cord. 

What is the brain stem?

400

This organ is a part of the large intestine, and houses a great amount of latent bacteria responsible for helping to break down complex food left over from the process of digestion. It occasionally becomes infected by it's own bacteria, leading to a rapidly devolving and deadly disease.  

What is the appendix?

400

This body system consists of a series of organs and vessels is home to the network of white blood cells that patrol the body. 

What is the lymphatic system?

400

This chemical you inhale via cigarettes and vapes is a strong stimulant and is highly addictive. 

What is nicotine?

400

This hormone, secreted from the pancreas during the process of digestion, is responsible for breaking down large sugar molecules into simpler carbohydrates for the body. The disease known as diabetes occurs whenever the pancreas is unable to make enough of this vital hormone. 

What is insulin?

400

This organ is responsible for passing urine out of the body.

What is the urethra?

500

This muscle type solely makes up the heart. 

What is cardiac muscle?

500

A person who is heterozygous for type B blood would have this genotype. 

What is Bo?

500

Phineas Gage famously has this area of his brain damaged by a railroad spike while working with explosives. While the severe injury did not kill him, it did permanently alter his personality and ability to regulate his emotions. 

What is the frontal cortex?

500

This fluid with a similar ph. to water is the first stage of the chemical digestive process. It's job is to break down complex carbohydrates into simpler sugars. 

What is saliva?

500

This type of cancer causes a reduction in the number of healthy white blood cells, weakening the immune system.

What is Leukemia?

500

The small flap of skin that protects the trachea from foreign substances when you swallow closes automatically whenever it indicates negative pressure in the mouth due to the act of swallowing. 

What is the epiglottis? 

500

This hormone is otherwise known as the "love" hormone. Secreted during activities of human bonding such as spending time with a loved one, it's main job is to foster feelings of care and devotion to either a romantic partner, family member, or dear friend. 

What is oxytocin? 

500

This organ, the largest of the body, is responsible for secreting wastes via sweat and oil glands. It's color changes in response to a chemical known as melanin. 

What is skin?

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