BONES
True or false: Adult humans have more bones than infants
False
About what percent of your body weight comes from skeletal muscle?
~40% (within 5%)
Name the four lobes of the brain
Frontal, parietal, temporal, and occipital
What is the average volume of blood in an adult human?
1.2-1.5 gallons/4500-5700 mL, ~7% body weight
What substance in your synovial fluid causes your joints to "pop" when released?
Nitrogen gas
How many bones are in an adult human?
206
How many muscles are in the human body?
About 600 (within 50)
This structure, positioned at the rear of the brainstem, coordinates sensations with responses from our muscles, enabling most of our voluntary movements and helping maintain balance and posture
Cerebellum
Name the four chambers of the heart
right and left atria and ventricles
How much faster do fingernails grow than toenails?
~2-3 times as fast (2.14)
What is the longest bone in the body?
Femur
Largest muscle in the human body (based on mass)
gluteus maximus
What is the thick bundle of nerve fibers that connects and sends signals between the two hemispheres of the brain?
Corpus callosum
Name the four main components of blood
Plasma (fluid part, 90%), red blood cells, white blood cells, platelets
What is the (average) length of the small intestine when stretched out?
~18 feet
Identify the location of the zygomatic bone (see image)
A
Identify the gastronecmius on a diagram (see image)
E
What part of the brain controls autonomic vital functions such as heart rate, breathing, and sneezing?
Medulla oblongata
Name the blood vessel responsible for providing oxygenated blood to the hand that runs "distally on the anterior part of the forearm" (and is also where pulse readings are commonly taken)
Radial artery
Name the (one?) part of your body that blood does not provide oxygen to
Cornea
Name the three bones in the inner ear (extra 100 points if you give their scientific names)
hammer (malleus), anvil (incus), stirrup (stapes)
Strongest muscle *pound for pound* (amount of pressure it can exert based on its mass)
masseter (muscle that closes jaw/generates biting force)
This structure plays a central role in emotional responses, particularly the fight-or-flight response. It also attaches emotional content to memories in order to store them clearly with few repetitions
Amygdala
Carotid artery (interior+exterior)
What is the longest (recorded) amount of time that a human has gone without sleep?
264 hours/about 11 days, which is debated