31. 2 the central nervous system
Give an example of a reflex
The way you pull your hand quickly when prickled by a pin is an example of a reflex
What are of the cerebrum,cerebellum and brain stem responsible for.
They are responsible for processing and relaying information
T or F: each hemisphere deals with the opposite side of the body
True
What is a reflex?
quick automatic response to a stimulus
What is the main communication link between the brain and the rest of the body?
spinal cord
heroin
stimulate receptors elsewhere in the brain that lead to dopamine release
what parts of the brain are changed by drug use?
synapses, drug use affects dopamine receptors
what might be the effects on someone who seriously injured his or her cerebellum?
that person would have problems with coordination, balance, and action of muscles which is what the cerebellum is in charge of.
Thalamus
the brain's sensory control center, located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla.
identify the four lobes of the brain and their functions.
the frontal lobe-emotional expression, problem-solving, memory, language, judgment, and sexual behavior. It is, in essence, the "control panel" of our personality and our ability to communicate. parietal lobe- Reading and speech temporal lobe-Hearing and smell occipital lobe-vision
occipital lobe function
visual processing
What is the cerebrum responsible for
voluntary activities of the body
What is the inner layer of the cerebrum?
white matter
methamphetamine
,releases a flood of dopamine, produces an instant high.
Parts of the Central Nervous System (CNS) include
Brain and spinal cord and are both made up of neurons
which part of the brain id is the site of intelligence, learning, and judgment? a.brain stem b.cerebellum c.cerebrum d.limbic system
C. Cerebrum
limbic system function
Center for emotion, behavior and memory
Information about muscle and and joint position, as well as other sensory inputs are sent to the.
Cerebellum
Thalamus function
The thalamus recieves messages from sensory receptors throughout the body and then relays the information to the proper region of the cerebrum for further processing.
How many does the cerebrum consist of and what are they?
2 layers , cerebral cortex and white matter
Hemispheres are connected by
A band of tissues called the corpus callosum
which part of the brain controls blood pressure, heart rate, breathing, swallowing? a. brain stem b.limbic system c.cerebral cortex d.thalamus
A. Brainstem
What is the largest region of the human brain?
Cerebrum
Brainstem
Connects the brain and spinal cord. regulates the flow of information between the brain and the rest of the body
What does the cerebral cortex consist of?
Densely packed nerve cell bodies known as grey matter
What's dopamine?
Dopamine Is a neurotransmitter released by the hypothalamus and limbic system. It reduces the number of receptors - causing addiction.
frontal lobe is responsible for
Evaluating consequences, making judgement, forming plans
hypothalamus function
Is the control center for recognition and analysis of hunger , thirst, fatigue, anger and body temperature. The hypothalamus also helps coordinate the nervous and endocrine systems.
Where does the whitish color in white matter come from?
Its whitish color comes from bundles of axons with myelin sheaths .
Which part of the brain is involved in fear and anixiety?
Limbic system
cerebral cortex
Part of the brain that coordinates body movement
Parietal lobe is responsible for
Reading and speech
Sensations from the left side of the body go to the——— hemisphere. And sensation from the right side go to the —— hemisphere.
Right , left
Most of the neurons that enter and leave the brain do so in a large cluster of neurons And other cells known as
The Spinal Cord
The second largest region of the brain is
The cerebellum
What does the cerebral cortex do?
The cerebral cortex processes information information from the sense organs and controls body movements. It's also where thoughts plans and learning abilities are processed.
The region of the brain that is responsible for the voluntary, or conscious, activities of the body.
The cerebrum
What is the importance of the large surface area of the cerebral cortex.?
The large area of the cerebral cortex is important because it makes the brain more efficient at controlling body movements, thinking and learning.
Where are the thalamus and hypothalamus found
between brain stem and cerebrum
The control point of the central nervous system Is
brain
nicotine and alcohol
cause increased release of dopamine
Which part of the brain is located in the back of the head
cerebellum
The outer layer of the cerebrum is called
cerebral cortex
What are the major areas of the brain?
cerebrum, cerebellum, brain stem
hypothalamus
control center of feelings of hunger, thirst, fatigue, anger, and the body temperature
Cerebellum
coordinates and balances the actions of the muscles
what connects the two hemispheres of the brain?
corpus callosum
how do drugs cause addiction?
drugs reduce the amount of dopamine receptors. so it takes more drugs to get high then the previous use. Without the drugs those addicted feel depressed and sick because of the lack of sypnapses making them to the drugs.
temporal lobe is responsible for
hearing, taste, smell
Which part of the brain is found inside the cerebrum?
hypothalamus
cocaine
keeps dopamine in the synaptic region longer, intensifying pleasure and suppressing pain
Each hemisphere is divided into regions called
lobes
what's the cerebral cortex and what's its function?
outer layer of the cerebrum, central thinking and other complex behaviors
