2 Biological Bases of Behavior Flashcards
The study of biological bases of human behavior
Biopsychology
They use drugs for treating those with psychological & physical disorders.
Biopsychologist
Is the system by means of which we perceive, adapt to, & interact with the world around us.
Nervous System
Is made up of brain
& the spinal cord.
- Made up of neurons located in the brain and spinal cord.
Central Nervous System
Made up of neurons & bundles of axons & dendrites that carry information back & forth between the brain & the body.
Spinal Cord
What are the division of the nervous system?
- Central Nervous System
- Peripheral Nervous System
Includes all the nerves that extend from the spinal cord & carry messages to various muscles, glands, & sense organs located throughout the body.
Peripheral Nervous System
Consists of a network of nerves that connect either to sensory receptors or to muscles that you can move voluntarily.
Somatic Nervous System
Regulates heart rate, breathing, blood pressure, digestion, hormone secretion, & other functions
Autonomic Nervous System
Subdivisions of the PNS
- Somatic Nervous system
autonomic nervous system
Subdivision of ANS
- Sympathetic Division
- Parasympathetic Division
Which is triggered by threatening or challenging physical or psychological stimuli, increasing physiological arousal, & preparing the body for action.
Sympathetic division
Returns the body to a calmer, relaxed state & is involved in digestion
parasympathetic divison
Sympathetic actions
fight or flight
parasympathetic action
rest and digest
Are string like bundles of axons & dendrites that come from the spinal cord & are held together by connective tissue.
nerves
which number about 100 billion, have two specialized extensions: receiving electrical signals; & transmitting electrical signals
neurons
the most numerous brain cells about 900billion
glial cells
is a relatively large, egg-shaped structure that provides fuel, manufactures chemicals, & maintains the entire neuron in working order
cell body
are branchlike extensions that arise from the cell body& insulates an axon
dendrites
is a single threadlike structure that extends & carries signals away from the cell body to neighbouring neurons, organs, & muscles.
axon
looks like separate tube-like segments composed of fatty material that wraps around
Myelin Sheath
Look likes tiny bubbles, are located at the extreme ends of the axon’s branches.
end bulb/ axon terminal buttons
Is an infinitely small space (20-30 billions of a meter) that exists between an end bulb & its adjacent body organ (heart), muscles (head), or cell body.
synapse
are sensory neurons that carry information from the senses to the brain and spinal cord
Afferent neurons
are motor neurons which carry information away from the brain & spinal cord to produce responses in various muscles & organs throughout the body.
efferent neurons
is a relatively short neuron whose primary task is to connect neurons together.
interneuron
Types of neurons
- afferent neuron
- efferent neuron
- interneuron
is the organ in
our bodies that most directly controls our thoughts, emotions, & motivations
brain
is the largest part of the brain
- It uses information from our senses to tell us what is going on around us & tells our body how to respond
forebrain
– makes connections with the hindbrain and forebrain and alerts the forebrain to incoming sensation.
– It also involved in visual & auditory reflexes such as automatically turning your head towards a noise.
midbrain
– functions as a bridge to interconnect messages between the spinal cord & the brain.
pons
– It also makes chemicals involved in sleep.
pons
is located at the top of the spinal cord.
medulla
It includes a group f cell that controls vital reflexes such as respiration, heart rate, and blood pressure
medulla
is located at the very back & underneath the brain.
cerebellum
It also involved in coordinating movements, but not in initiating voluntary movements.
cerebellum
a thin layer of cells that essentially covers the entire surface of the forebrain
cortex
the largest area of the brain.
cerebrum
Is concerned with all higher mental functions such as learning & memory, speaking & language, emotional responses, experiencing sensations, initiating voluntary movements, planning & decision making.
cerebrum
located at the front art o the brain.
frontal lobe