Nervous System
What two parts of the body make up the central nervous system?
Brain and Spine
What is the main function of the large intestine?
To absorb water
What direction do arteries carry blood?
Away from the heart
What element is most of the air composed of?
Nitrogen
How many bones do adults have?
206
What is the name of a nerve cell?
Neuron
What is feces composed of?
Undigested Materials
How many liters of blood does the average adult have?
5L
On average how many litres of air do we breathe in in a single breath?
3 to 4 L
What three types of tissues make up the human skeleton?
Bones, Ligaments, and Cartilage
What three things protect our central nervous system?
Skull, Spine guards, and cerebral spinal fluid
Which two organs both mechanically and chemically digest food?
The mouth and stomach
Which chamber in the heart does deoxygenated blood enter?
Right Atrium
Where are the two locations where gas exchange occurs?
The lungs (alveoli) and cells
What happens to muscle fibers when sent a signal from a nerve cell?
They contract
Which part of a neuron receives a signal sent by another neuron
Dendrite
Why are Villi cells shaped like fingers?
To increase their surface area
How does the cardiovascular system play a vital role for you immune system?
It transports white blood cells around the body
What is the word equation for cellular respiration?
Glucose + Oxygen --> Carbon Dioxide + Water + Energy
What connects muscles to bones?
Tendons
What are the three subgroups of the peripheral nervous system?
Voluntary Muscles, Sensory Organs, Involuntary Functions
These three digestive enzymes are produced in the pancreas and breakdown food in the small intestine
Amylase, Trypsin, and Lipase
Which is the only oxygenated vein in the body?
The pulmonary vein
How much ATP is made from one glucose molecule
32-36
Why do muscles work in opposing groups?
Because Muscles can only contract (pull) and can't push