Chapter 3 - The biological bases of Behavior

22 terms by anum_warsi786

Create a new folder

Advertisement Upgrade to remove ads

Neurons

individual cells in the nervous system that RECEIVE, INTEGRATE, and TRANSMIT information

Glia Cells

Cells found throughout the nervous system that provide various types of support for neurons

Neural Impulse

Essentially a signal that moves through the neuron
They occur by means of an action potential
Resting potential = - 70 millivolts

Action Potential

* Stimulation that causes the cell membrane to open briefly
*Very brief shift in a neuron's electrical charge that travels along an axon

ALL of NONE Law

Once a neural impulse FIRES, they fire (there is no going back)
The STRENGTH of the stimulus may affect the RATE at which the neuron fires

Neurotransmitters

Chemicals that transmit information from one neuron to another

What are the 4 types of neurotransmitters?

*Acetylcholine
* Serotonin
* Dopamine
* Norepinephrine

What behavior does ACETYLCHOLINE elicit?

Movement

What behavior does SEROTONIN elicit?

Sleep/wakefulness
Depression

What behavior does DOPAMINE elicit?

Depression

What behavior does NOREPINEPHRINE elicit?

Schizophrenia

What are the TWO types of Nervous Systems?

Central Nervous System (CNS)

Peripheral Nervous System (PNS)

What are the TWO parts of the PNS?

Somatic Nervous System - (voluntary muscles)

Autonomic Nervous System - (involuntary muscles such as the heart)

What are the TWO parts of the CNS?

Brain
Spinal Cord

What are the 4 lobes of the brain and what does each provide?

* Frontal - Movement
* Temporal - Auditory
* Parietal - Touch
* Occipital - Vision

What does the HINDBRAIN contain?

Medulla - breathing, circulation
Pons - sleep and arousal
Cerebellum - movement and coordination

What does the FOREBRAIN contain?

** Largest part of the brain

Thalamus
Hypothalamus
Limbic System
Cerebrum

& other structures

Function of Thalamus

Relay center for senses (except SMELL)

Function of Hypothalamus

Regulates the basic biological needs - 4 Fs

Flighting
Fleeing
Feeding
Fornicating

Median Forebrain bundle - bunch of axons that are found in the hypothalamus

What are the two components of the Limbic System?

- Amygdala *deals with emotions; learned FEAR responses

- Hippocampal Area (Hippocampus) * deals with memory

What does the Limbic System include?

It includes PLEASURE CENTERS in the brain

What is included in the MIDBRAIN?

Reticular Formation - contributes to sleep and arousal

**Important Dopamine projections originate here (involved in voluntary movements)
** Integration of sensory inputs
** PARKINSONS DISEASE

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set