Ch 2: Biology and Behavior Flashcards
Three types of neurons
Afferent, efferent, and interneurons
Functions of afferent neurons
relay messages from sense organs, receptor to brain or spinal cord
Function of Efferent neuron
signals form brain, spinal cord to glands; muscles movement
Function of interneurons
carry information
transmits between neurons in brain and neurons in spinal cord
what is synapse?
axon terminal of sending neuron communicates with receiving neuron across synaptic cleft
receptor sites
sites on dendrite or cell body of neuron
interacts with neurotransmitters
What is reuptake?
neurotransmitters taken from synaptic cleft into axon terminal
excites neurons involved in learning new information, it also inhibits heart fibers
Acetylcholine (ACh)
Four types of Monoamines
Dopamine (DA), norepinephrine (NE), Serotonin, epinephrine (adrenalin)
Name the two common types of Amino Acids
Glutamate (glutamic acid), GABA (gamma-aminobutyric acid)
Name all the neurotransmitters
Acetylcholine, monoamines, amino acids, endorphins
what is the extension to the brain called? It also transmits info from brain to PNS and from PNS to brain.
The spinal cord
it contains two hemispheres and executes smooth, skilled body movement. It also regulates muscle tone and posture.
Cerebellum
This part of the brain regulates sleep cycles, learn new and verbal info. and it relay station for info flowing into and out of higher brain centres.
Thalamus
What is hypothalamus?
regulates hunger, thirsts, sexual and emotional behavior. It is also responsible for regulating body tempt. and our biological clock.
