|
|
This is only a preview of the paper
Click here to register and get the full text.
Existing members click here to login
|
|
|
Parts of the Brain -brain is divided into 3 sectionsQ a. hindbrain lower portion of the brain and is involved in many vital functions such as heart rate, respiration, and balance b. midbrain involved in vision and hearing c. forebrain front area of the brain involved in complex functions such as though and emotion _The Hindbrain_ medulla involved in vital functions such as heart rate, blood pressure, and breathing pons located in front of the medulla dn is involved in regulating body movement, attention, and alertness cerebellum little brain involved in balance and coordination -a person with an injured cerebellum may walk unsteadily and occasionally fall down _The Midbrain_ -areas of the midbrain involved in vision and hearing -eye movement controlled by and area in the midbrain -contains part of the RAS reticular activating system (RAS) important for attention, sleep, and arousal -stimulation makes us alert -affects arousal by increasing heart rate and blood pressure, increases brain activity -alcohol reduces the activity of the RAS, affecting alertness and reaction time -make it possible to screen out some noises and awakening or not awakening _The Forebrain_ -key areas: thalamus, hypothalamus, limbic system, cerebrum -forebrain makes it possible for humans to engage in complex thinking processes thalamus relay station for sensory stimulations -most messages coming from the sense organs go through the thalamus on the way to the higher levels of the brain -transmits sensory information, such as pain, to areas of the brain that interpret and respond to the information -relays sensory input from the eyes and the ears to the appropriate parts of the brain for interpretation of the input hypothalamus lies below the thalamus tiny -involved in many aspects of behavior and physiological functions -regulation of body temperature, the storage of nutrients, and various aspects of motivation and emotion -involved in hunger, thirst, sexual behavior, carring for offspring and aggression -disturbances can lead to unusual drinking and eating behaviors limbic system involved in learning and memory, emotion, hunger, sex, and aggression -if a particular part is damaged, people can recall old memories but do no creat new ones cerebrum crowning glory of the brain -70% of the weight of the brain -wrinkled with ridges and valleys cerebral cortex outer layer of the brain -part of the brain that makes us uniquely human and the part that thinks -also deals with memory, language, emotions, complex motor functions, perception, and much more The Cerebral Cortex: What Makes Us Unique -2 sides: left hemisphere and right hemisphere corpus callosum connects the two hemispheres of the brain -information received by one side of the body is transmitted to the opposite hemisphere of the brain -each hemisphere divided into four parts, or lobes -frontal lobe -parietal lobe temporal lobe occipital lobe -some sensations, such as visual sensations, are received primarily in one lobe.
Approximate Word count = 485
Approximate Pages = 1.9
(250 words per page double spaced)
|
|
|
|
|
|