Tuesday, April 7, 2015

THE BRAIN

Cerebrum: 
The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.

Cerebellum: 
The cerebellum, or "little brain", is similar to the cerebrum in that it has two hemispheres and has a highly folded surface or cortex. This structure is associated with regulation and coordination of movement, posture, and balance.

Lymbic system:
The limbic system, often referred to as the "emotional brain", is found buried within the cerebrum. Like the cerebellum, evolutionary the structure is rather old.

Thalamus:

a large mass of gray matter deeply situated in the forebrain The structure has sensory and motor functions. Almost all sensory information enters this structure where neurons send that information to the overlying cortex. 

Hypothalamus:

The structure is involved in functions including homeostasis, emotion, thirst, hunger, circadian rhythms, and control of the autonomic nervous system. In addition, it controls the pituitary. 

Amygdala:

located in the temporal lobe; involved in memory, emotion, and fear.

Hippocampus:

 This part of the brain is important for learning and memory.

Midbrain:

It is involved in functions such as vision, hearing, eye movement, and body movement.

Pons:

 It has parts that are important for the level of consciousness and for sleep, movement and facial expressions. 


Medulla Oblongata:

between the pons and spinal cord. It is responsible for maintaining vital body functions, such as breathing and heart rate 

Thalamus:

every sense except smell.

Hypothalamus:

controls body temperature, thirst, hunger , endocrine system and hunger

Hemispheres:

Left- logic and sequential task
Right-aptail and creative tasks


Motor cortex:
sends signals controlling body movements
Broca's area
responsible for controlling muscle that produce speech
aphasia-unable to make movement or talk
Frontal lobe:
Concerned with reasoning, planning, parts of speech and movement (motor cortex), emotions, and problem-solving.

Parietal lobe:
Concerned with perception of stimuli such as touch, pressure, temperature and pain.

Temporal Lobe:
Concerned with perception and recognition of auditory stimuli (hearing) and memory (hippocampus).

Occipital lobe:
Located at the back of the brain, behind the parietal lobe and temporal lobe.
Concerned with many aspects of vision.


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