Biopsychology Nervous System
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| The Central Nervous System (CNS) consists of... | The Brain and Spinal Cord (don' say spine)
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| 2 main functions of the CNS | Control of behaviour and
regulation of body's physiological processes such as breathing
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| Main function of the Spinal Cord | Relay information between the brain and the rest of the so that brain can monitor and regulate body processes such as digestion.
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| The two systems that the human nervous system is divided into | CNS (Central Nervous System) and PERIPHERAL nervous system
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| The two systems that make up the peripheral nervous system | SOMATIC and AUTONOMIC nervous system
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| The two systems that the AUTONOMIC nervous system is divided into | SYMPATHETIC and PARASYMPATHETIC nervous system
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| (CNS) The brain can be divided into 4 main areas | CEREBRUM, CEREBELLUM, BRAIN STEM and DIENCEPHALON
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| (CNS) The largest part of the human brain | CEREBRUM
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| (CNS) The cerebrum is divided into 4 different..... | LOBES. Each lobe has a different function.
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| (CNS) Structure of the Cerebrum | Split down the middle into 2 halves which are called (Cerebral) Hemispheres. They are connected by the Corpus Callosum.
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| (CNS) Function of the Frontal Lobe | THOUGHT and producing SPEECH
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| (CNS) Function of the Cerebellum | Controlling motor skills and balance- co-ordinate precise movements
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| (CNS) 2 important structures found in the Diencephalon | The Thalamus and the Hypothalamus
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| (CNS) Main function of the Thalamus | Routes nerve impulses coming in from the senses to the correct part of the brain for processing
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| (CNS) Main function of the Hypothalamus | Regulates body temperature, hunger and thirst. Links the Endocrine system and the Nervous System by controlling release of hormones form the PITUITARY Gland.
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| (CNS) Main function of the Brain Stem | Regulates automatic and vital life processes such as heartbeat, swallowing and breathing. Motor and Sensory neurones travel through the brain stem allowing impulses to pass between BRAIN and SPINAL CORD.
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| Peripheral Nervous System (PNS) | The part of the nervous system that is outside of the brain and spinal cord
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| The two main divisions of the PNS | Somatic and Autonomic nervous system
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| Somatic Nervous system - function | Carries sensory and motor impulses/ information to and from the CNS via sensory and motor neurones
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| Which way do sensory neurons relay messages? | From the senses TO The CNS
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| Which way do motor neurons relay messages? | FROM the CNS TO the effectors (muscles and glands)
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| What are VOLUNTARY actions? | Actions we are consciously aware of doing e.g. crossing a road
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| Function of the ANS | Regulates INVOLUNTARY activities such as heartbeat , digestion and stress response. Sympathetic and parasympathetic parts of the ANS regulate the same organs but have opposite effects.
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| Neurotransmitter (and functions) associated with the SYMPATHETIC part of the ANS. | NORADRENALINE-STIMULATING effects.
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| Neurotransmitter (and functions) associated with the PARASYMPATHETIC part of the ANS. | ACETYLCHOLINE - inhibiting effects
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| The type of responses the Sympathetic Nervous System (SNS) is involved in. | Responses that help us deal with emergencies (fight or flight). For example increasing heart rate and blood pressure to help prepare us for rapid action needed when under threat.
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| Effects of SNS activation on the body | Increase pupil size, more light in eye-better vision. Increase heart rate, greater blood flow to skeletal muscles.Glycogen in liver converted to glucose for energy. Adrenal medulla stimulated to release adrenaline. Bronchial tubes dilate -more O2 intake
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| Effects of Parasympathetic Nervous System (PNS) | Relaxes body after an emergency has passed. Slows heart rate and reduces blood pressure. PNS begins again (inhibited under SNS arousal). Energy is conserved. (REST and DIGEST).
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