Aqa A Level psychology- Biopsychology exam questions and answers 2024 100% pass

Aqa A Level psychology- Biopsychology exam questions and answers 2024 100% pass What components make up the Central Nervous system - Answer-The brain and spinal cord The peripheral nervous system has two divisions, what are they? - Answer-Autonomic nervous system and Somatic Nervous system Which division of the Peripheral Nervous System contains the sympathetic and parasympathetic divisions? - Answer-Autonomic What is the somatic nervous systems role? - Answer-To communicate with sense organs and voluntary muscles Which part of the central nervous system is in control of reflexes? - Answer-Spinal cord Cerebrum - Answer-The largest section of the brain which is divided into four sections. The frontal, parietal, occipital and temporal lobe. What joins each hemisphere of the brain? - Answer-The corpus callosum What is the role of the cerebellum? - Answer-Controls motor skills, movement, balance and coordination The dienecephalon is divided into which two important brain structures? - Answer-The thalamus and the hypothalamus What is the function of the thalamus? - Answer-Acts as a relay station for nerve impulses coming from the senses and sends them to the appropriate part of the brain The hypothalamus - Answer-Regulates body temperature, hunger and thirst. Links the endocrine and nervous system together. Controls the release of hormones from the pituitary gland Brain stem (medulla oblongata) - Answer-Regulates autonomic functions including breathing and heartbeat. The sympathetic nervous system - Answer-Helps our body to respond to emergencies, fight or flight response. Uses noradrenaline to increase heart rate. The parasympathetic nervous system - Answer-Restores the body back to equilibrium. Relaxes an individual by reducing heart rate and lowering blood pressure. Conserves energy. Each neurone contains: - Answer-The cell body (soma), a nucleus, dendrites, an axon, a myelin sheath made of Schwann cells, nodes of ranvier and a synaptic terminal What are the 3 types of neurone? - Answer-Sensory Motor Relay What is the function of a sensory neurone? - Answer-Carry nerve impulses from sensory receptors to the central nervous system. What is the function of a motor neurone? - Answer-They lie within the central nervous system but project their axons outside. They ten to bring about a response in the effector cell, e.g. muscle. What is the function of a relay neurone? - Answer-Allow sensory and motor neurones to communicate with one another. They are located in the Brain and Spinal cord. Stages of Synaptic transmission - Answer-1. Nerve impulse reaches the end of an axon. 2. This triggers the release of calcium ions into the presynaptic bulb 3. The release of calcium ions causes vesicles containing neurotransmitters to move and fuse with the presynaptic membrane. 4. The neurotransmitters are then released into the synaptic cleft by exocytosis. 5. The neurotransmitter then binds to the post synaptic membrane and provides an excitatory response. Excitatory responses - Answer-Increase the likeihood that