Med Nervous System

Brain Anatomy

Cerebrum(front of brain)

composed of the right and left hemispheres
joined by the corpus callosum
initiation of movement, coordination of movement, temperature, touch, vision, hearing, judgment, reasoning, problem solving, emotions, and learning
Brainstem(middle of brain)

includes the midbrain, the pons, and the medulla
movement of the eyes and mouth, relaying sensory messages (such as hot, pain, and loud), respirations, consciousness, cardiac function, involuntary muscle movements, sneezing, coughing, vomiting, and swallowing
Cerebellum(back of brain)to coordinate voluntary muscle movements and to maintain posture, balance, and equilibrium
Pons(in the brainstem)contains many of the control areas for eye and face movements
Medulla(lower part of the brainstem)contains important control centers for the heart and lungs
Spinal cordlarge bundle of nerve fibers located in the back that extends from the base of the brain to the lower backcarries messages to and from the brain and the rest of the body
Frontal lobelargest section of the brain located in the front of the head– involved in personality characteristics and movement
– Recognition of smell
Parietal lobemiddle part of the brain– helps a person to identify objects and understand spatial relationships (where one’s body is compared to objects around the person). – – also involved in interpreting pain and touch in the body.
Occipital lobeback part of the braininvolved with vision
Temporal lobesides of the braininvolved in short-term memory, speech, musical rhythm, and some degree of smell recognition
Thalamusmajor relay station between the senses and the cortex (the outer layer of the brain consisting of the parietal, occipital, frontal and temporal lobes)
Limbic SystemA group of interconnected structures that mediate emotions, learning and memory
AmygdalaLimbic structureinvolved in many brain functions, including emotion, learning and memory. It is part of a system that processes “reflexive” emotions like fear and anxiety
Cingulate GyrusPlays a role in processing conscious emotional experience
FornixAn arch-like structure that connects the hippocampus to other parts of the limbic system
Parahippocampal Gyrusimportant connecting pathway of the limbic system
HippocampusPlays a significant role in the formation of long-term memories

Eye Anatomy

Nervous Anatomy