Chapter 2 - Biology & Behavior Flashcards
what system recieves, sends, and acts?
the nervous system
What two primary systems direct the actions of the body?
- the nervous system
- the endocrine system
what system regulates internal body activity with glands that secrete chemicals (hormones) into the body?
the endocrine system
what do tou call the vast network of cells that tell you what is going on inside and outside your body?
the nervous system
what are nuerons?
specialized mervous system cells that send and recieve messages
what are the functions of glial cells?
- direct neuron growth
- stable chemicals
- provide energe
- repair
- prun connections
what is a cell’s skin called?
the outer membrane
what type of cell does not have an outer membrane?
red blood cells
what is the function of mitochondria?
to turn oxygen and glucose into energy
what is the percentage of weight for the brain?
2%
what percentage of oxygen does the brain use?
less than 20%
how many axons does a neuron generally have?
1
what are dendrites?
they are the fibers that recieve signals from the axon
how many dendrites does a neuron have?
many, with each having many branches
axons v. dendrites
axons carry and dendrites detect
