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Nervous System Samantha Robles p.5 (All the lobes and their functions.…
Nervous System Samantha Robles p.5
Classification of neurons.
Sensory neurons.
Motor neurons.
Interneurons.
Neurons in the brain
Major functions of the
nervous system.
The nervous system has 3 main functions: sensory, integration, and motor.
Major parts of the brain and
their functions.
cerebellum
receives information from the sensory systems, the spinal cord, and other parts of the brain and then regulates motor movements.
brainstem
controls the flow of messages between the brain and the rest of the body, and it also controls basic body functions such as breathing, swallowing, heart rate, blood pressure, consciousness, and whether one is awake or sleepy
the cerebrum
the largest part of the brain and is composed of right and left hemispheres. It performs higher functions like interpreting touch, vision and hearing, as well as speech, reasoning, emotions, learning, and fine control of movement.
Major divisions and subdivisions of the nervous system.
The nervous system can be divided into two major subdivisions, the central nervous system which is the CNS and the peripheral nervous system which is the PNS.
All the lobes and their functions.
frontal lobe
controls important cognitive skills in humans, such as emotional expression, problem solving, memory, language and judgment,
occipital lobe
associated with visuospatial processing, distance and depth perception, color determination, object and face recognition, and memory formation.
temporal lobe
involved in vision, memory, sensory input, language, emotion, and comprehension.
parietal lobe
functions in processing sensory information regarding the location of parts of the body as well as interpreting visual information and processing language and mathematics.
the layers of the meninges.
There are three layers of meninges, known as the dura mater, arachnoid mater and pia mater.
Action potential.
an action potential occurs when the membrane potential of a specific cell location rapidly rises and falls: this depolarisation then causes adjacent locations to similarly depolarise
Drugs that affect the brain
Marijuana.
Heroin and Prescription Opioids.
Cocaine, Methamphetamine, and Other Stimulants.
Benzodiazepines.
Ecstasy.
LSD, PCP, Ketamine, and Hallucinogens.
Divisions of the PNS of the body.
The peripheral nervous system is divided into two major parts: the somatic nervous system and the autonomic nervous system.
Anatomy of the spinal cord.
The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column. It encloses the central canal of the spinal cord, which contains cerebrospinal fluid.