KA 1: Divisions of the nervous system and parts of the brain

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Presentation transcript:

KA 1: Divisions of the nervous system and parts of the brain (a) CNS Central Nervous System (f) Localisation of brain functions The Nervous System (b) PNS Peripheral Nervous System (e) Cerebral Cortex (c) Medulla and Cerebellum (d) Limbic System

By the end of this section you will be able to ….. State 2 components of the central core State the function of these structures State the function of the limbic system State 3 functions of the cerebral cortex Identify these areas in a diagram

The Brain Central Core Cerebral cortex Limbic system The brain is a complex organ composed of 3 interconnected layers: The central core The limbic system The cerebral cortex (outer layer of cerebrum) Central Core

The Central Core Consists of the: Medulla: Regulates basic life processes e.g. breathing rate, heart rate, arousal and sleep. Cerebellum: Controls balance, posture and movement. Medulla Cerebellum Central Core

The Limbic system Consists of the hypothalamus pituitary gland (releases hormones) Think back to the reproductive system Pituitary gland Hypothalamus Limbic System

The Limbic system Limbic System The limbic system is involved in a variety of functions: Processing information needed for long-term memories. Regulating emotional states (e.g. anger, fear and aggression) Influencing biological motivation ( e.g. hunger, thirst and sexual behaviour) Pituitary gland Hypothalamus Limbic System

The Brain Central Core Cerebral cortex Limbic system The brain is a complex organ composed of 3 interconnected layers: The central core The limbic system The cerebral cortex (outer layer of cerebrum) Central Core

The Cerebral Cortex The cerebral cortex is the outer layer of the cerebrum It is the centre for conscious thought; it also recalls memories and alters behaviour in light of experience.

The Cerebral Cortex The functions of the cerebral cortex include: Receiving sensory information Coordinating voluntary movement Making decisions in the light of experience.