Respiratory
Main organ of the system.
Lungs
Main organ of the system.
Heart
In the "12 Days of Christmas" what day is "Geese a-laying"?
Six
Main female hormone
Estrogen
System responsible for breakdown of nutrients.
Digestive
What gas is received by the respiratory system?
Oxygen
The average human's BPM _______during exercise
increases
How many reindeer fly Santa's sleigh?
9
Place where mature sperm are found.
Epididymis
System that includes the cerebrum.
Nervous
Write the name and chemical formula of the gas that is released back to the environment.
Carbon dioxide/CO2
Vessels that carry blood into the heart.
Veins
How many nights of Hanukkuh are there?
8
Place where eggs are produced.
Ovary
Part of the external defenses of the immune system.
Skin, sweat, oil, mucus membranes
Name of the large branches in the lungs.
Bronchi
Largest blood vessel of the heart.
Aorta
Average height of White House's X-mas tree.
20 feet
The word fetus is used after the _____ week of pregnancy.
8th
How many bones in the skeletal system of an adult.
206
Place where oxygen and carbon dioxide diffuse into the blood.
Alveoli
Mitral, tricuspid and pulmonary are 3 types of...
Valves
Name 2 fruits traditionally found in fruit cake.
Cherries, dates, orange, apricot
Down Syndrome is the result of having an extra ____ chromosome.
21st
This system contains the thyroid gland?
Endocrine