GRE (Graduate Record Examinations) Psychology Behavioral Neuroscience-Sensory Structures and Processes Study Material (Page 2 of 3)

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Brain and Nervous System: Peripheral Nervous System (PNS) and Differences between PNS and CNS


Peripheral Nervous System (PNS)

The Peripheral Nervous System is divided into two sub-systems.

Somatic Nervous System

Its primary function is to regulate the actions of the skeletal muscles.

Autonomic Nervous System

It regulates primarily involuntary activity such as heart rate, breathing, blood pressure, and digestion. Although these activities are considered involuntary, they can be altered either through specific events or through changing perceptions about a specific experience. This system is further broken down into two complimentary systems, Sympathetic a…

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Brain and Nervous System: Embryonic Vertebrate Brain

5 Parts of Embryonic Brain

Embryonic vertebrate Brain divided into three parts: Prosencephalon (forebrain) , Mesencephalon (midbrain) and Rhombencephalon (hindbrain) .

Parts of Embryonic Brain

Prosencephalon: It is the rostral part or interior part of the brain. It is divided into two parts; Telencephalon and Diencephalon.

  • Telencephalon: consists of two cerebral hemispheres, known as cerebrum. Cerebrum is the largest part of the brain (in humans and mammals) . The primary function of telencephalon is communication, intelligence, per…

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